PL66291Y1 - Self-propelled sand washer - Google Patents

Description

2 PL 66 291 Υ1

Pattern description

The subject of the utility model is a self-propelled dredger. It is designed to extract mud from under the water level of reservoirs or watercourses.

Various devices for removing sediment are known. For large water reservoirs, devices equipped with centrifugal pumps, usually installed on ships, sucking the sediment through a suction pipeline sometimes equipped with a mud looser are used. In both of the above-mentioned versions of desludging machines, the installed pumps installed on ships, floats or pontoons, pump the sucked-in spoil in the form of sediment through a pipeline to the storage site located in the adjacent area or to floating barges adapted to receive mud. From the Polish patent specification No. 179921, a device for collecting the soil outlay from under the water table is known, installed on vessels, especially on suction-dredging dredgers, intended for horizontal excavation of soil, especially the exploitation of aggregates under the water surface at small and large depths. The device consists of a boom, a ground pump sucking the spoil and a cutting wheel.

Another known solution is to place a single-bucket or multi-bucket excavator on the ship or pontoon to extract the mud from the bottom, which are transported to the shore by a belt conveyor or moved by means of a grab or scraper while simultaneously rotating the single-bucket excavator to the opposite bank.

Dredgers equipped with scraping scoops in the form of shovels, buckets or scrapers moved by means of a rope, belt or chain drive are also known.

Other known silt extracting devices are structures suspended from a wheeled or crawler tractor adapted to be moved along a ditch or canal. In this type of devices, the silt extraction unit is a boom with a belt with scrapers. In various such solutions, for example from Patent Nos. 142510, 170788 and 170178, a paddle ejector is mounted at the end of the boom.

The known solutions do not very favorably extract the silt without disturbing the native soil of the bottom. They are effective in extracting silt containing rock soil and gravel.

The essence of the utility model is the construction of a self-propelled dredger, with a drive mechanism that moves a shovel on the bottom of water-filled tanks or various watercourses, and the scoop speed can be controlled by measuring the density of the removed mud with a conservometer coupled with an electric cable with the shovel drive mechanism, characterized by this that the shovel has side walls and, on the underside, a sliding bottom plate in the shape of an isosceles trapezoid with edges converging towards the inner rear wall, which is inclined towards the inside of the scoop, and that the bottom of the inner rear wall of the shovel is fitted with shredders for solid parts, pump displacement units with pressure nozzles, to which a discharge manifold with an outlet pipe is attached, to which the discharge pipeline is attached, and moreover, to the lower edges of the side walls of the scoop floats in the form of semi-cylinders, in which driving screws are attached aki, driven by motors through gears.

The mulch according to the utility model is relatively simple in structure and effective in removing mud from the bottom without damaging the native soil.

The design of the scoop with pump units in the lower rear part of the scoop ensures the compaction of the muds during its movement on the plate and their efficient pumping. Floats reduce the pressure of the bucket on the bottom, eliminate unfavorable scaling of the native soil of the bottom on the bucket. The drive of the shovel by augers with the possibility of adjusting the direction of their rotation makes it easier to choose the direction of the shovel.

The subject of the utility model is shown schematically in the drawing.

The demister has a scoop 1 with a sliding bottom plate in the shape of an isosceles trapezoid with edges tapering towards the inner surface of the rear wall 2, which is inclined towards the inside of the scoop 1. Side walls 3 are edge-attached to the edge of the rear wall 2 of the bottom plate. Positive displacement pump units equipped with crushers of solid parts 1 are attached to the underside of the inner rear wall 2 of the scoop. The discharge manifold 5 is attached to the pressure pump nozzles of the displacement units 4, to which the outlet stub pipe 6 is attached, which is connected to the suction part of the consistometer 7, and its part

Claims (2)

3 PL 66 291 Υ1 discharge pipe is attached to the discharge pipeline 8 feeding the sediment to the landfill. To the lower edges of the side walls 3 of the scoops 1, floats 9 are fastened in the form of half cylinders, inside which drive screws 10 are mounted, driven by motors 11 through gears 12. Consistometer measuring element 7 and the power supply system are connected by an electric control and power cable 13 to motors H driving the augers 10. The operation of the shovel moving under the water surface of the tanks or watercourses is as follows. The shovel 1 is moved by two rotating augers 10 attached to the edges of the side walls 3 of the shovel 1. When the shovel 1 is moved, the shovel from the bottom of tanks or water courses is scraped onto the bottom sliding plate of the shovel 1 and then sucked by pump units 4 located on the bottom of the rear walls of 2 scoops 1. The converging shape of the bottom skid plate towards the rear wall of scoops 1 enables the concentration of mud at the suction point of pump units 4, from which the silts are forced through the collector 5 and pipeline 6 to the consistometer 7, and then through the discharge pipeline 8 to landfills . Depending on the impulse density analyzed by consistency 7, the electric signal via the control and power cable 13 is sent to the driving motors H of the screws 10, causing the speed of the bucket 1 to be increased or decreased. The drive system of the screws 10 allows you to change the direction of their rotation, which allows the bucket to be moved forward or backwards with the same direction of rotation of the screws 10, or changing the direction of movement of the scoop 1 with the rotational movement of one screw 10. The pressure of the scoop 1 on the bottom of the tank or watercourse is reduced by attaching two semi-cylindrical floats 9 to it, which ensures scaling on the scoop 1 sediment without scorching native soil. Protective Claims 1. A self-propelled dust collector having a drive mechanism that moves a shovel on the bottom of water-filled tanks or various watercourses, the shovel speed being controlled by measuring the density of the removed mud with a consistometer connected by an electric cable with the drive mechanism of the shovel, characterized in that the shovel (1 ) has side walls (2) and on the underside a sliding bottom plate in the shape of an isosceles trapezoid with edges tapering towards the inner rear wall (2), which is inclined towards the inside of the scoop (1), and towards the underside of the inner rear wall of the scoop ( 1) are mounted, equipped with crushers of solids, displacement pump units (4) with discharge nozzles, to which the discharge manifold (5) is attached with the outlet pipe, to which the discharge pipeline (6) is attached, and also to the lower side edges the walls (2) of the scoop (1) are fixed in the form of half cylinders, floats (9), in the interior of which are mounted driving augers (10), driven by motors (H) through gears (12). 2. The strainer according to claim A device according to claim 1, characterized in that the delivery pipeline (6) has a consistometer (7), the electronic measuring element of which and the electric energy supply system are connected by an electric control and supply cable (13) with QD motors driving the screws (10).