Gravel screening device with sludge cleaning function

Abstract

The invention discloses a gravel screening device with a sludge cleaning function. The device comprises a sand loading hopper, a conveying device for conveying sand in the sand loading hopper to a high place, a multistage sand filter device, a sand stacking room, a drainage ditch, a waste water recovery pool and a sand washing device. Through arrangement of spiral blades on the inner wall of a roller, the gravel motion path is effectively prolonged, and full gravel screening is promoted; the gaps of the spiral blades are reasonably arranged according to the particle sizes of gravels to guarantee the screening effect; a water tank is formed in the ground of the sand stacking room for achieving a buffer effect on falling gravels to protect the ground; through a detachable separation plate, the capacity of a compartment is reasonably adjusted according to the gravel screening conditions to guarantee the space utilization rate; waste water is purified through the waste water recovery poolto improve the water utilization rate; and a precipitation pool is cleaned through a sand-water separator to guarantee continuous operation of the waste water recovery pool.

Description

technical field [0001] The invention belongs to the technical field of building material processing equipment, and in particular relates to a sand and gravel screening device with the function of sludge cleaning. Background technique [0002] With the development of the construction industry. The demand for sand used in the domestic construction industry has increased. The construction industry uses a large amount of sand materials, and has different demands for sand materials of different particle sizes. Therefore, the sand material needs a sand screening process before it is used. The purpose is to separate the coarse sand from the fine sand. The method is inefficient and labor-intensive; on the other hand, sand often contains mud and other harmful impurities, such as saline and alkali, which can corrode steel bars and affect the life of buildings. Therefore, it is necessary to clean the mud and harmful impurities in the sand. [0003] Chinese patent No. CN200820074822.4...

AI Technical Summary

Problems solved by technology

[0005] Due to the limited working length of the currently used sand screening device, one-time screening cannot fully separate the sand and gravel with large and small particle sizes, and repeated screening operations are required, and the work efficiency is low; due to the irregular shape of the sand and gravel, the surface is relatively sharp , the impact with the ground during the stacking process will easily cause damage to the ground; the space for storing building materials on the construction site is limited, and the currently used sand screening device cannot reasonably plan the sand stacking space, which will easily cause space waste or insufficient space; screening and washing During the process, a large amount of mud and sand are accumulated and are difficult to handle in the wastewater recovery device, which seriously affects the normal operation of the wastewater recovery device.

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