RU2583795C2 - Floating complex for underwater soil processing - Google Patents

Abstract

FIELD: treatment plant.

SUBSTANCE: invention relates to floating sorting-classification system. System includes vibrating screen, hydraulic cyclone for sand, connection pipes, gravel and sand trays, soil pump, hydraulic classifier with drain and soil collector. Soil collector is equipped with ejector with inlet for water supply under pressure. Ejector is connected via pipeline with vibratory screen. Vibratory screen is equipped with gravel loading chute and sump, output of which is equipped with a sand pump connected to input of hydrocyclone for sand. Processing method of underwater soil comprises feeding pulp for processing, processing of sand-gravel mix using vibrating screen and cyclone sand followed by discharging finished fractionated products. Pulp is fed into hydraulic classifier for its separation into suspended particles and sand-gravel mix. Suspended particles are removed into drain, sand-gravel mix is directed into soil collector with ejector. Water is supplied under pressure into ejector. Obtained soil mixture is fed to vibrating screen via pipeline with additional flushing mixture after ejector. On vibrating screen mixture dispersed on sieves in fractions larger and smaller than 3-5 mm, fraction larger than 3-5 mm is directed for shipment, fraction smaller than 3-5 mm is directed into sump. From output of sump mixture with help of sand soil pump is supplied to hydrocyclone for sand of fraction is delivered for shipment.

EFFECT: water with finer sand is removed in drain line.

6 cl, 1 dwg

Description

 The invention relates to the construction of a floating sorting and classification complex and can be used in the development and development of subsea deposits, in dredging and mining operations from flooded quarries on easily eroded soils, such as river sand or sand and gravel.

Due to the constant growth of requirements for the quality of materials, the road construction industry is switching to the consumption of fractional sand and gravel, corresponding to GOST. Therefore, the natural sand and gravel mixture must go through both washing and sorting.

Known combination device for the classification and enrichment of minerals [see RF patent for the invention No. 2189862, IPC B03B 9/00, publ. 2002.09.27], containing a dredger with a pipe for pulp, a classifier in the form of settling and concentration chambers in the hold of a barge. The device (complex) allows to increase the degree of soil washing, but after filling the barge is discharged for unloading and further processing along the shore into separate fractions and pulp waste remaining on the shore, silt and sand the shore.

Known floating complex for processing underwater soil [see RF patent for utility model No. 54820, IPC E02F 3/88, B03B 9/00, publ. 2006.07.27], containing a suction pump, hydroclassifiers, a hydroclone, a spiral classifier and a screen, connected in series and mounted on a barge, whose input is connected to the output of the hydroclassifier or to the output of a suction pump for the fourth variant of the complex, a crusher whose input is connected to the screen output or is completely turned off. Hydroclassifier, hydroclone, spiral classifier, screen, crusher are interconnected and with transport barges and / or boats, winches; the output of the screen for pulp with sand without gravel is connected to the input of the spiral classifier or is not connected when the screen does not work. The disadvantages of the complex is its low pulp performance and the bulkiness of the equipment and its placement.

Closest to the technical nature of the present invention is a floating processing complex for processing sand and gravel mix [see Patent of the Russian Federation for utility model No. 100432, IPC B03B 9/00, E02F 3/88, publ. 2010.12.20], including a unit of hydrocyclones made in the form of two hydrocyclones and two hydroscreens installed in series with a floating means, the output of the first hydrocyclone is connected to the inlet of the second hydrocyclone, the second output of the first hydrocyclone with enriched pulp is connected to the hydroscreens, one of the outputs of which is connected with the main part of the water with silt particles is discharged into the production area, and the second exit with gravel of a fraction of 10-20 mm is connected by a trench for loading onto a barge, the second exit of the second hydrocyclone is connected with a hydro by hot water, one of the exits of which is associated with the release of water with sand particles into the production area, the second exit with gravel of a fraction of 5-10 mm is connected to a trench for loading into a barge, the output of a second pulp hydrocyclone with sand without gravel of a fraction of 0.16-5 mm and in the form of fine sand particles enters the storage hopper, the lower outlet of which is connected to the sand distribution hopper of a 0.16-5 mm fraction through hydraulic flaps to feed the loading chute, the upper output of the storage hopper is associated with the ejection of small sand particles into the mining area . The disadvantages of this complex is that to ensure the working condition of the complex you will need a soil pump with a working pressure of over 35 m of water. Art., and as a result, a significant increase in the power consumption of the pump, since for the operation of hydrocyclones sufficient elevation differences are necessary, the need to control the ratio of soil flow rate in the mixture to the pulp.

The problem solved by the invention is the lack of the need to adjust the ratio of soil flow rate in the mixture to the pulp and elevation to ensure the operation of hydrocyclones and, as a result, simplifying the process and increasing the productivity of the complex as a whole.

The problem is solved by the present invention, which is a floating complex for processing underwater soil, including a unit of hydroclassifier, vibrating screen and hydrocyclone, in which the sand-gravel mixture, sucked in by the soil pump, is sent to the hydroclassifier, the lower part of which is connected to the soil collector, to which an ejector is connected connected by a pipeline to a distribution box, connected to a vibrating screen, in which a sand-gravel mixture is dispersed on sieves in fractions, and which fractions of more than 3-5 mm are sent for shipment, and fractions of less than 3-5 mm are sent to a sump connected to a vibrating screen, which in turn is connected by a pipeline through a sand pump to a hydrocyclone, of which fractions are less than 3-5 mm from its lower part sent for shipment, and silty and dusty particles together with water are removed into the drain through the upper part of the hydrocyclone for shipment to consumers. In addition, the diameter of the pipeline is selected in balance with the performance of the vibrating screen and hydroclassifier, and the performance is adjusted by changing the pressure of the water supplied to the ejector.

In FIG. 1 shows a diagram of a floating complex for processing underwater soil.

The complex includes a ground pump 1, hydroclassifier 2, a hydroclassifier 3 soil collector, an ejector 4, a distribution box 5, a vibrating screen 6, a sump 7, a soil pump 8, a sand hydrocyclone 9, a gravel loading tray 10, a sand loading tray eleven.

The device complex operates as follows. The pulp sucked in by the soil pump of the dredger 1 is fed to the hydroclassifier 2, where due to centrifugal forces, the soil mass (sand and sand-gravel mixture) is separated by the particle size (depending on the performance of the hydroclassifier). Small particles of sand, silt, wood, and other suspended particles are removed from the hydroclassifier to the drain. Large particles settle in the hydraulic classifier 3 soil collector and, picked up by the ejector 4, are piped through the distribution box 5 to the vibrating screen 6. At this stage, due to the water supplied under high pressure of the ejector, the soil mass is transported for further sorting on the vibrating screen 6, and with this method transportation location of the vibrating screen relative to the hydroclassifier can be any. When moving through the pipeline, the soil mass is actively mixed and an effective additional washing of the material is performed. The diameter of the pipeline is selected in balance with the performance of the vibrating screen and hydroclassifier, due to which washing the vibrating screen itself is not required. The performance adjustment is performed by changing the pressure supplied to the ejector 4 of water. Work in the hydroclassifier - ejector - vibrating screen scheme practically does not require automation of the process. The material dispersed by the vibrating screen 6 on the sieves according to the necessary fractions above or 3 mm or 5 mm (depending on the customer's requirements) is sent by the loading tray 10 for shipment. Material with a fractional composition of less than or 3 or 5 mm together with water enters the sump 7, from which the sand pump 8 is fed into the hydrocyclone 9. Due to the hydrocyclone, the material is separated and sent for shipment to the consumer or for additional drainage, and fine sand is dusty and silt particles together with water are removed to the drain.

Thus, the use of the proposed floating complex simplifies the process of enrichment and fractionation of sand and gravel and increases the productivity of the complex as a whole due to the lack of the need to increase the pressure of the soil pump when feeding the pulp to the hydroclassifier.

 Besides:

- the material produced by this complex becomes significantly cleaner due to the additional washing of the mixture with water supplied by the ejector, and meets the requirements of GOST;

- there is no need to automate the process of unloading material from the soil precipitator, since there is no need to regulate the supply of sand and gravel.

Claims (6)

1. A floating complex for processing subsea soil, including a vibrating screen, a sand hydrocyclone, connecting pipelines, gravel and sand trays, a soil pump, characterized in that it contains a hydroclassifier equipped with a drain and a soil collector, the soil collector is equipped with an ejector with an inlet for supplying pressure water, the ejector is connected by a pipeline to a vibrating screen, the vibrating screen is equipped with a loading tray of gravel mixture and a sump, the output of which is equipped with a sand pump connected to the inlet of the sand hydrocyclone. 2. The floating complex according to claim 1, characterized in that the diameter of the pipeline is selected in balance with the performance of the vibrating screen and hydroclassifier. 3. The floating complex according to claim 1, characterized in that it is configured to change the pressure of the water supplied to the ejector to control the performance of the complex. 4. A method of processing underwater soil, including the supply of pulp for processing, processing of sand and gravel using a vibrating screen and a hydrocyclone for sand, followed by shipment of finished fractionated products, characterized in that the pulp is fed into a hydroclassifier for its separation into suspended particles and sand and gravel the mixture, suspended particles are removed into the drain, the sand-gravel mixture is sent to the soil collector with an ejector, water is supplied to the ejector under pressure, the resulting soil mixture is fed to a vibrating screen by a pipeline with additional washing of the mixture after the ejector, on a vibrating screen the mixture is dispersed on sieves in fractions of more and less than 3-5 mm, fractions of more than 3-5 mm are sent for shipment, fractions of less than 3-5 mm are sent to the sump, from the outlet of the sump the mixture is a sand soil pump is fed to a sand hydrocyclone to obtain a predetermined fraction, which is sent for shipment, and water with finer sand is removed to the drain. 5. The method according to p. 4, characterized in that the diameter of the pipeline is chosen in balance with the performance of the vibrating screen and hydroclassifier. 6. The method according to p. 4, characterized in that the water is fed into the ejector with the possibility of changing its pressure to change the performance of the complex.

Images