Composite sieve plate framework, thermoplastic elastomer sieve plate and preparation methods

Abstract

The invention discloses a composite sieve plate framework, a thermoplastic elastomer sieve plate and corresponding preparation methods. The composite sieve plate framework comprises a composite material framework made from engineering plastic and fibers. The preparation method is preparing the composite sieve plate framework through an injection forming process and by taking the engineering plastic and the fibers as raw materials. The thermoplastic elastomer sieve plate comprises a composite sieve plate body and the sieve plate framework, wherein the sieve plate body is made from a thermoplastic elastomer material; and the sieve plate framework is arranged in the sieve plate body. The preparation method for the thermoplastic elastomer sieve plate comprises the following steps: preparing the sieve plate framework through the injection forming process; and then arranging the sieve plate framework in a die used for preparing the thermoplastic elastomer sieve plate, and obtaining the thermoplastic elastomer sieve plate through the injection forming process and by taking the thermoplastic elastomer material as a raw material. The whole sieve plate is enough in strength and rebound resilience; and the sieve plate framework and the sieve plate body are closely connected and cannot be separated and peeled off, so that the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of sieve plates, in particular to a composite sieve plate skeleton, a thermoplastic elastomer sieve plate and a corresponding preparation method. Background technique [0002] At present, the sieve plate (screen mesh) on the market mainly includes steel wire sieve plate and plastic sieve plate. Due to the better performance and economic benefits of plastic sieve plate, it is widely used in coal washing plants, coking plants, mines, power plants, dredging companies, metallurgy, petroleum, etc. , petrochemical and other enterprises are widely used. The existing plastic sieve plate is mainly made of thermosetting polyurethane perfusion, that is, artificial low-pressure perfusion (casting), iron or steel and other metal skeletons are put into the die, and then directly poured into polyurethane, and the surface is scraped and passed through the mold. Formed by chemical reaction and manually demolded after coolin...

AI Technical Summary

Problems solved by technology

The sieve plate prepared by this material or process has many problems such as uneven glue thickness, incomplete internal metal skeleton, unwrapped individual positions, low strength of the product itself, decreased wear resistance, non-standard installation grooves and docking grooves, etc.

As a result, the service life of the product is reduced. At the same time, the T-shaped steel frame is worn quickly and needs to be replaced in a short time, which increases the cost of use.

At the same time, the strength of this sieve plate is insufficient, and it is prone to peeling failure and damage between the mosaic frame and the sieve plate body; the internal metal frame inlaid is difficult to connect with the external polyurethane material, and the skeleton and the sieve plate body (polyurethane) are deformed when the product vibrates The large difference in quantity leads to the separation of the two materials into pieces, and the skeleton cannot be recovered after plastic deformation, which aggravates the separation and peeling of the two materials, resulting in the damage and failure of the screen (plate)

Moreover, the metal frame has no elasticity. Once the deformed product cannot be restored, the product cannot be used, the life of the sieve plate is low, and the cost of use is high; the production process of the inlaid metal frame has a great impact on the environment, and the frame is usually formed by welding, which leads to the production of the frame. High cost, heavy weight, and high transportation costs; in addition, due to the perfusion production process, the chemical reaction between the metal skeleton and polyurethane has occurred, and the performance of the sieve plate body has changed when it is melted and recycled. Therefore, the existing sieve plate cannot be recycled through melting. Production and use costs are high

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