Sand screening equipment for road and bridge construction

Abstract

The invention belongs to the technical field of sand screening, and discloses sand screening equipment for road and bridge construction, which comprises a device shell; an upper funnel is arranged at the top of the device shell; a bottom funnel is arranged at the bottom of the device shell; a barrier cover is arranged on the inner wall of the device shell; the inner wall of the device shell penetrates through the barrier cover and is provided with a plurality of supporting plate; two motors are arranged at the bottom of the inner side of the barrier cover; output shafts of the motors are provided with turbines; the circumferential side faces of the turbines are connected with gears in a meshed mode; rotating rods are arranged in the gears, and the rotating rods are movably connected to the interiors of the supporting plates through bearings; and both ends of the rotating rods are provided with a first rotating disc and a second rotating disc. According to the sand screening equipment for the road and bridge construction provided by the invention, partition screening is conducted on a trapezoidal sieve plate, the screening efficiency of the trapezoidal sieve plate is improved, the trapezoidal sieve plate is still subjected to the effect of a partition plate to conduct screening work in the descending process by means of the rotation effect of the partition plate, and meanwhile, partition cloth can be driven to clean fine sand at the top of the barrier cover in the rotating process of the partition plate.

Description

technical field [0001] The invention belongs to the technical field of sand screening, in particular to sand screening equipment for road and bridge construction. Background technique [0002] Road and bridge engineering refers to the planning, design, construction, maintenance, and repair of structures that cross waters, valleys, and all traffic passages on roads; at road and bridge construction sites, it is often necessary to screen sand before concrete mixing to Avoid mixing river mud or even large-scale debris in the sand, which will affect the quality of roads and bridges. Most of the existing sand screening is to place the screen obliquely to make the screen oblique, and then manually sprinkle the sand on the screen. The sand rolls on the screen surface under the action of gravity to achieve the purpose of screening. In such a screening process, the amount of sand sprinkled on the screen surface at a time cannot be too much, and the interval of spraying on the screen s...

AI Technical Summary

Problems solved by technology

[0002] Road and bridge engineering refers to the planning, design, construction, maintenance, and repair of structures that cross waters, valleys, and all traffic passages on roads; at road and bridge construction sites, it is often necessary to screen sand before concrete mixing to Avoid mixing river mud or even large-scale debris in the sand, which will affect the quality of roads and bridges. Most of the existing sand screening is to place the screen obliquely to make the screen oblique, and then manually sprinkle the sand on the screen. The sand rolls on the screen surface under the action of gravity to achieve the purpose of screening. In such a screening process, the amount of sand sprinkled on the screen surface at a time cannot be too much, and the interval of spraying on the screen surface is limited. The sand can only be thrown again when the sand is completely rolled down, so as to prevent the accumulation of sand from affecting the screening effect

The consequence of this is that the screening efficiency of sand is greatly reduced, which in turn causes delays in construction

[0003] Existing sand screening machines also have some room for improvement. For example, when the sand is fed onto the screen, the screen will vibrate to allow qualified sand to pass through the screen. If the surface is piled up, the sand on the upper layer is difficult to screen because it is difficult to reach the lower layer

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