Concrete raw material screening device

Abstract

The invention discloses a concrete raw material screening device. The concrete raw material screening device comprises a machine body, a first screening mechanism and a second screening mechanism, wherein the first screening mechanism and the second screening mechanism are installed in the machine body, a feeding hopper is installed on one side of the upper end face of the machine body, universalwheels are installed at the four corners of the bottom end face of the machine body, mounting lug bases are fixed to the upper portion and the lower portion of the side wall, close to the feeding hopper, in the machine body respectively, one end of the first screening mechanism and one end of the second screening mechanism are rotationally arranged in the mounting lug bases respectively, and the other ends of the first screening mechanism and the second screening mechanism extend out of the machine body and penetrate through two sets of material guiding outlets formed in one side face of the machine body respectively, wherein the bottom ends of the first screening mechanism and the second screening mechanism abut against a buffering mechanism at the material guiding outlets, and a motor isfurther installed on the side face of the machine body between the two sets of material guiding outlets. According to the concrete raw material screening device, double screening can be achieved, thescreening efficiency is improved, and meanwhile the problem that when concrete falls onto a screen plate, the screen plate is damaged due to too large gravity can be avoided.

Description

technical field [0001] The invention belongs to the technical field of concrete screening, and in particular relates to a screening device for concrete raw materials. Background technique [0002] Concrete: refers to the collective name of engineering composite materials in which aggregates are cemented into a whole by cementitious materials. Generally speaking, the term concrete refers to the cement concrete obtained by using cement as the cementitious material, sand and stone as the aggregate; mixed with water (may contain admixtures and admixtures) in a certain proportion, and stirred. Concrete, which is widely used in civil engineering. [0003] Concrete raw materials need to be screened before concrete processing to ensure good concretion and fastening effect after concrete mixing. However, most of the existing concrete raw material screening devices are fixed during the screening process. It is inconvenient to replace the screen. At the same time, when the concrete r...

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Problems solved by technology

[0003] Concrete raw materials need to be screened before concrete processing to ensure good concretion and fastening effect after concrete mixing. However, most of the existing concrete raw material screening devices are fixed during the screening process. It is inconvenient to replace the screen. At the same time, when the concrete raw material is directly dropped on the screen, due to the heavy weight of the concrete raw material, it will damage the screen for a long time and affect the service life of the screen. Some screening devices are mostly static screening, and their screening efficiency is low, which cannot meet the needs of use

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