RU70823U1 - INTEGRATED GRANGE CRUSHED RECYCLING SYSTEM AND RECYCLING PLANT - Google Patents

Abstract

The complex system of recycling granite gravel and a recycling plant are designed for the reuse of granite gravel used as deicing material collected from the sidewalks of city streets and side streets, as well as from yard areas.

An integrated system of recycling granite crushed stone, characterized in that it includes a settling zone block, a recycled water supply unit, a granite crushed stone recycling unit, which is connected to a settling zone block and a recycled water supply unit, which, in turn, is connected through a pump to a settling zone block, as well as a block site for storing rubble contaminated with debris, and a block site for storing finished gravel.

In addition, the pump has a capacity of 700-2000 l / min and a water pressure of 80 atm.

Installation of recycling granite crushed stone, characterized in that it includes a hopper feeder, conveyor, vibrating screen with a flushing system, and the vibrating screen contains at least two screens with mesh sizes from 1.0 mm to 5 mm.

Moreover, the installation is made with the possibility of mobile movement.

Description

The complex system of recycling granite gravel and a recycling plant are designed for the reuse of granite gravel used as deicing material collected from the sidewalks of city streets and side streets, as well as from yard areas. One of the most important features of urban economy is the cleaning of urban areas in the winter. The features of winter cleaning include significant amounts of snow mass and large areas of cleaned road surfaces, where granite crushed stone is used as anti-icing material.

Crushed stone that can be returned for reuse is crushed stone used in yard areas (yard paths and house sidewalks), which in winter is practically not taken outside the yard areas and is concentrated in snow dumps formed after snow removal, as well as crushed stone , which is used on the sidewalks of narrow streets and alleys.

A known installation for the disposal of bitumen-containing materials and forced melting of snow, containing a receiving hopper, auger, knife, shaft drive, heater (utility model patent No. 45304, V03B 9/02).

The disadvantage of this installation is that it does not provide recycling of granite crushed stone.

There is a method of complex processing of primary friable masses, in which, using a screen, the raw material is divided into fractions, gravitational enrichment is carried out by wet separation using concentration tables and / or locks (patent for invention No. 2180269, B03B 9/02).

The disadvantage of this technical solution is the separation of the source material into fairly large fractions of 6-15 mm, as well as the impossibility of recycling gravel.

The technical result consists in providing the possibility of reuse of used gravel gravel, as well as in improving the efficiency of cleaning granite gravel from pollution. The essence of the utility model lies in the fact that the complex system of recycling of granite crushed stone contains a block of the zone of sedimentation, a block of recycled water supply, a recycling unit

granite crushed stone, which is connected by a pipeline to the block of the settling zone and the unit of reverse water supply, which, in turn, is connected through the pump to the block of the settling zone, as well as the block of the rubble storage area contaminated with garbage and the block of the finished rubble storage area. In addition, the pump provides a capacity of 700-2000 l / min and a water pressure of 80 atm.

The installation for recycling granite crushed stone includes a feed hopper, a conveyor, a vibrating screen with a flushing system, and the vibrating screen contains at least two screens with a mesh size of 1.0 mm to 5 mm. In addition, the installation is made with the possibility of mobile movement.

The utility model is illustrated by the following figures of the drawings: figure 1 shows a block diagram of an integrated system of recycling of granite crushed stone; figure 2 - shows a block diagram of an installation for recycling of granite crushed stone.

In Fig. 1: 1 - block of the settling zone, 2 - block of reverse water supply, 3 - installation of recycling of granite crushed stone, 4 - pump, 5 - block of the storage site for crushed stone contaminated with garbage, 6 - block of the storage area for finished crushed stone.

In Fig.2: 7 - hopper feeder, 8 - conveyor, 9 - vibrating screen with a flushing system.

An integrated recycling system works as follows.

Snow masses collected from the courtyards and sidewalks of narrow streets and lanes, including contaminated granite crushed stone, enter the territory of the integrated system and are stored at site 5. The settling zone is designed to precipitate suspended particles discharged after recycling of granite crushed stone.

In the reverse water supply system 2, which ensures the return of water to the washing of contaminated crushed stone, and the settling zone 1, the amount of water necessary for washing is supplied, the pump 4 is turned on. The so-called “wet” technology is used to clean granite crushed stone, in which the crushed stone is washed with water.

Contaminated crushed stone from platform 5 enters the recycling unit 3, which consists of a hopper-feeder 7, a conveyor belt 8 and a vibrating screen with a flushing system 9.

The hopper-feeder 7 is designed to supply source material, which is evenly distributed along the conveyor belt 8 and enters the vibrating screen 9, which contains at least two screens with a mesh size of 1.0 mm to 5 mm, in which crushed stone is divided into fractions. Fractions that are more than 5 mm are removed, fractions having a size of 5 mm or less are sorted through subsequent sieves. Preferably, the crushed stone had fractions of 2-5 mm in size.

The washing of contaminated rubble is carried out in a washing machine, in order to avoid the loss of small material during washing with water, the movement of the material should be directed against the flow of water. Water is supplied by pump 4 from the reverse water supply system 2 under a pressure of 80 atm and a capacity of 700 to 2000 liters / min, which depends on the degree of contamination of the rubble.

As a result of the experiments, it was found that at a supplied water pressure of 80 atm in combination with a pump capacity of 700 to 2000 l / min, the quality of cleaning of contaminated crushed stone increases, and the pump performance depends on the degree of contamination of the crushed stone.

Crushed stone fraction less than 2 mm together with the wash water is discharged into the sand trap (not shown in the drawing) of the settling zone, where heavy impurities are deposited, and the clarified water enters the drain pit (not shown in the drawing), from where it is pumped by the circulating water system through filters served on washing contaminated rubble.

After cleaning, granite crushed stone fraction 2-5 mm is dried and stored at the site of the finished crushed stone 6 with subsequent shipment for reuse.

Fractions of more than 5 mm and less than 2 mm are stored separately and transported to the solid waste landfill.

It should be noted that the recycling unit can operate as part of an integrated recycling system, which is located on the territory of the snow-melting point, which receives a large amount of contaminated snow mass, where the snow melts, and various debris and sand settles to the bottom through existing grates. The clarified water is supplied through the circulating water supply system to the washing of contaminated granite crushed stone.

In addition, the recycling unit can be mobile and work independently, for which the unit should be connected to the water supply system.

Thus, the claimed utility model provides for the cleaning of contaminated crushed stone and its reuse, which makes it possible to economically use granite crushed stone and reduce the cost of acquiring new crushed stone. For example, in Moscow, according to calculations, the total mass of spent rubble, which can be returned for reuse, is 17-18 thousand tons.

Claims (4)

1. An integrated system for the recycling of granite crushed stone, characterized in that it includes a settling zone block, a reverse water supply system unit, a granite crushed stone recycling installation, which is connected to a settling zone block and a reverse water supply system block, which, in turn, is connected through a pump to the settling zone block, and also the block of the storage site for crushed stone contaminated with garbage, and the block of the storage site for the finished crushed stone. 2. The integrated system according to claim 1, characterized in that the pump has a capacity of 700-2000 l / min and a water pressure of 80 atm. 3. Installation of recycling granite crushed stone, characterized in that it includes a hopper feeder, conveyor, vibrating screen with a flushing system, and the vibrating screen contains at least two screens with a mesh size of 1.0 to 5 mm. 4. The recycling installation according to claim 3, characterized in that the installation is made with the possibility of mobile movement.