SU870601A2 - Suction dredge - Google Patents

Description

(54) AGRICULTURAL EQUIPMENT

one

The invention relates to the field of mining, namely to suction dredgers, designed to hydromechanize earthworks, and is an improvement of the known device.

A suction dredger is known for hydromechanizing earthworks. This dredger includes a floating base, associated with it, a swivel frame, on which a ground receiver, a reflow pump, a pressure slurry pipeline, and a final section connected to the pressure slurry pipeline 1 are mounted.

The pressure slurry pipe is made with a tap having a conical nozzle and is equipped with a device for guiding the pulp through a tap made in the form of valves with hydraulic cylinders located at the ends of the cone nozzle and the final slurry section.

The location of the valves on the cone nozzle and the final section of the slurry pipeline, and not inside the outlet and pressure pipeline, reduces the resistance to the movement of the slurry, improves performance and ensures simplicity of design.

However, when the valve is rotated on the end section of the slurry pipeline, intense splashing of the fluid is observed on the sump deck deck. As a consequence, the use of such a valve leads to contamination of the deck and the need to carry out a special barrier for the mechanisms on the deck, making it difficult to clean the deck.

The aim of the invention is to prevent liquid from entering the deck when turning valve 10 on the end section of the slurry pipeline.

To do this, in the suction dredger, the valve on the end section of the dredging pipeline, in the suction dredge, is provided with a cone-shaped element, the base of which is spouting equal to the valve base.

Claims (1)

FIG. 1 shows the dredger; in fig. 2 - the section of the final section of the pipeline and the valve, equipped with a cone-shaped element; in fig. 3-6 - valve in rotated positions; in fig. 7.8 are embodiments of the side surface of the valve. The suction dredger contains a floating base 1, a ground receiver 2, a reflow pump 3 with a drive 4, a pressure slurry pipeline 5, and a final section 6 of the pressure slurry pipeline in the form of pulpmet. Pulp 5 is made with a branch 7 having a conical nozzle 8, and is equipped with a device for directing pulp to the branch. The device for directing pulp to the outlet is made up of valves 9 and 10 located at the ends of the cone nozzle 8 and the end section 6 of the slurry pipeline controlled by hydraulic cylinders 11 and 12 that are connected to the hydraulic system in parallel (not shown). The valve 10 on the end section 6 of the slurry pipeline 5 is provided with a cone-shaped element 13, the base of which is made equal to the base 14 of the valve 10. At the same time, there is no protruding part on the lateral surface of the body formed by the cone-shaped element 13 and the valve 10. Exclusion of pulp getting on the suction-deck deck when turning the valve on the end section of the slurry line is provided as follows. The frame on which the soil receiver 2 is located, the reflow pump 3, is lowered into the water. Further include a hydrolining system and a reflow pump drive 4 (the hydrolining system is not shown). The pulp is received by the reflux pump 3 through the soil receiver 2 and fed to the pressure pulp line 5. At the same time, valve 9 at outlet 7 is closed, and valve 10 at pulpome 6 is open and pulp is removed from the slit through pulp 6. During the development period of the slot, the frame on which the soil receiver 2 and the reflow pump 3 are located rotates from one extreme position to another, and the dredger moves the distance (schag) forward when the frame reaches the extreme positions. During the turn of the frame, obstacles can be encountered in front of the soil receiver 2 (mud fuels washed up with silt, sand, boxes, dense soil lintels, etc.). When this valve 10 is closed, and the valve 9 is opened. When the valve 10 is rotated, it moves along an arc of a circle and transversely dissects the fluid flow. The liquid is jets of different thicknesses along the lateral surface of the cone-shaped element 13, and then the base 14 of the valve 10. The liquid moves along a trajectory that ensures the liquid is expelled beyond the limits of the dredger. This prevents the ingress of liquid onto the deck of the dredger on the mechanisms on it. Formula of the invention. Suction dredg. St. No. 635240, characterized in that, in order to exclude contamination of the projectile with the flow of pulp, the valve of the pipeline is provided with a cone-shaped element, the base of which is made equal to the base of the valve. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 635240, cl. E 21 C 45/00, 1972. YU eleven Fi.g.5