Sand screening equipment for road and bridge construction

Abstract

The invention belongs to the technical field of sand sieving, and discloses a sand screening device for road and bridge construction, which includes a device casing, an upper funnel is provided on the top of the device casing, and a bottom drain is provided at the bottom of the device casing. The inner wall of the device housing is provided with a barrier cover, and the inner wall of the device housing is provided with a plurality of support plates through the barrier cover. Two motors are provided on the inner bottom of the barrier cover, and the output shaft of the motor is provided with a turbine. The peripheral side of the turbine is meshed with a gear, and the inside of the gear is provided with a rotating rod, which is movably connected to the inside of the support plate through a bearing. Both ends of the rotating rod are provided with a first rotating disc and a second rotating disc. The device not only divides and sieves the trapezoidal sieve plate to improve its screening efficiency, but also enables the trapezoidal sieve plate to be sieved by the action of the baffle plate during the descending process with the help of the rotation of the baffle plate, while the baffle plate During the rotation process, the partition cloth can also be driven to clean the fine sand on the top of the barrier cover.

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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