Multi-stage screening drum type sand screening machine for construction of construction site

Abstract

The invention relates to the technical field of constructional engineering, and discloses a multi-stage screening drum type sand screening machine for construction site construction, which comprises a rack, one end of the rack is movably sleeved with a positioning wheel I, the other end of the rack is fixedly sleeved with a positioning wheel II, one end of the outer side of the positioning wheel I is fixedly connected with a driven gear, and the other end of the outer side of the positioning wheel II is fixedly connected with a driven gear. And an input channel is formed in the center of the positioning wheel I. By designing the second-stage screen drum, the third-stage screen drum and the extension body, when the second-stage screen drum drives the extension body to rotate and fall to form eccentric rotation, the bottom of the second-stage screen drum can intermittently extrude materials at the bottom of the third-stage screen drum, so that the materials which are bonded into blocks are further dispersed, and meanwhile, the second-stage screen drum is matched with second-stage screen holes in the second-stage screen drum, so that the materials are uniformly dispersed. When the second-stage screen drum rotates upwards, materials in the third-stage screen drum can be taken up, the stacking thickness of the materials in the third-stage screen drum is reduced, the contact area of the materials and the screen drums is increased, and therefore the screening effect is improved.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a multi-stage sieving drum type sand screener for construction on a construction site. Background technique [0002] The drum type sand screener in the construction site is mainly by feeding the material into the rolling screen drum, so that the material moves forward under the rolling of the screen drum and its own gravity, so that the material with qualified diameter in the material can be removed from the screen. The material suitable for construction is obtained by falling into the holes opened on the screen drum. [0003] Since most of the materials on the construction site are placed in the open air for a long time, the materials are affected by the natural weather, and the materials are prone to dry and stick together. The block materials are processed, so that many materials are not screened out due to the change in volume, and become waste materials and...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the use of the existing multi-stage sand screening machine proposed in the background technology, the present invention provides a multi-stage sub-screen drum type sand screening machine for construction site construction, which has the ability to classify and screen materials, different volumes of materials Layered screening, the secondary screen cylinder rotates eccentrically and hits the primary screen cylinder, the vibration of the primary screen cylinder causes the material to be thrown up and stratified in a small range, the vibration of the primary screen cylinder causes dryness, the bonded material is broken, and the vibration of the primary screen cylinder causes the The active rod drives the crushing protrusion to quickly rotate and crush the input material, the extension body lifts up and turns the material, the extension body raises the material to roll down and spread out, the material rolls down and breaks, the secondary screen drum squeezes the material in the third screen drum The advantages of crushing and the secondary screen cylinder driving the material in the third-stage screen cylinder to spread out solve the technical problems in the above background technology that the material is dry, bonded into blocks, material stacking leads to poor screening effect, and slow material screening speed

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