Screening pretreatment apparatus of soil repair and improving integrated modular integration equipment

Abstract

The invention relates to a screening pretreatment apparatus of soil repair and improving integrated modular integration equipment. The screening pretreatment apparatus comprises a rapid opening door,a material bin, toothed rolling shafts, screening teeth, hydraulic motors, guiding rails, piston rods, hydraulic cylinder and a screening feeding hopper, wherein three groups of the toothed rolling shafts are arranged side by side in the screening feeding hopper, the distance between the teeth of the toothed rolling shafts and the distance between the toothed rolling shafts can be adjusted, the iron teeth on the rolling shafts are distributed in a staggered manner, each toothed rolling shaft is directly hydraulically driven, and the rolling shafts are obliquely placed. According to the presentinvention, according to different particle sizes and different hardness of polluted soil and building garbage, the mixture is screened, and the polluted soil is broken, such that the rapid screeningand optimization treatment can be performed on the polluted soil containing large-size building garbage and stone blocks.

Description

technical field [0001] The invention relates to the technical field of soil restoration and improvement. Background technique [0002] In recent years, incidents of hazards caused by polluted sites have frequently appeared in the newspapers. These polluted sites are characterized by many types of pollution, complex sources of pollution, wide range of hazards, and small areas of polluted sites. During the restoration, development and reuse of polluted sites, due to the lack of rapid and economical remediation technologies for polluted soils, leading to my country's land development and reuse encounter difficulties. At the same time, in recent years, most cities in my country have begun to build large public green spaces. To achieve high-quality garden construction, in addition to selecting good seedlings, high-quality greening soil is also needed to support the growth of plants. However, due to the serious degradation of soil quality caused by excessive industrial activitie...

AI Technical Summary

Problems solved by technology

However, most of the currently polluted soil to be treated in China still has construction waste and stones. At the same time, many areas in my country, such as the Yangtze River Delta, are all cohesive soils. It is difficult to fully mix with chemicals after only one crushing, and crushing pretreatment is required.

The use of screening equipment in the prior art cannot effectively screen and pretreat contaminated soil, which seriously affects the restoration and improvement of contaminated soil

Aiming at the shortcomings that polluted soil cannot be effectively screened, referring to foreign engineering cases and domestic actual conditions, a screening pretreatment device is designed in our company's integrated modular integrated equipment for soil remediation and improvement

[0004] At present, similar screening pretreatment devices have been disclosed. Soil crushing equipment such as domestic patent description CN202689074U discloses a screening and crushing bucket installed on hydraulic excavators and wheel loaders. This technology is mainly applicable to mines, Soil crushing in fields such as coal and building materials, but because the feed hopper needs to be used in conjunction with an excavator or other machinery, it cannot be quickly assembled and disassembled as a separate module, and the diameter of the sieved soil cannot be adjusted according to project requirements and site conditions. Corresponding adjustments cannot meet the remediation requirements of complex domestic polluted sites and diverse pollutants

[0005] In another patent specification CN1261550A, a kind of self-propelled soil treatment machine mentioned, because this soil treatment machine screens out impurities through the sieve plate or grid plate of the feed port when feeding, so it does not have effective screening. function of divided soil and broken soil

This equipment is not very suitable for the soil characteristics of our country. On the one hand: because most of the soil in our country is cohesive soil, with high viscosity and high water content, such soil will directly block the sieve of the equipment without long-term pretreatment. holes, so that the equipment can no longer be screened; on the other hand: because most of the polluted soil processed in my country contains a large amount of large pieces of construction waste, the screening device not only cannot effectively screen the soil, but also will Destroying the screening device will directly affect the treatment effect

Images