SU1587144A1 - Ejector-type soil intake device - Google Patents

Abstract

The invention relates to the development of sandy and sandy-gravel deposits using suction dredges. The goal is to increase the efficiency of excavation by jointly acting on pulses and changing the position of the ejecting nozzle relative to the suction tip (H). The device includes a suction pipe 1 with a suction H 2 and loosening H 3 with a pipe (P) 4. The ejecting H 5 is installed with a movement mechanism along the P 4 by means of a movement drive. The movement drive is designed as a cam mechanism (KM) 12 and a working chamber 7 having pistons 8, 9 with rods. One of the rods is connected by means of the lever 6 with the ejecting H 5. The other rod is spring-loaded and is installed with the ability to interact with the CM 12 through the stop 10 attached to the end of the rod. Water under pressure is supplied to P 4 for ejection and loosening of the rock. At the same time, H 5 makes a reciprocating movement under the action of the drive 13. Due to this, the outgoing jet periodically impulses a pulse and the distance from the mouth of the suction H 2 changes. This ensures the effectiveness of the development of the soil. 1 il.

Description

The invention relates to the development of sandy and sandy-gravel deposits using suction dredges.

The purpose of the invention is to increase the efficiency of excavation by jointly acting on pulses and changing the position of the ejecting nozzle relative to the mouth of the suction tip.

The drawing shows the device, the General side view, section.

The device consists of a suction pipe 1 with a suction tip 2 and a loosening tip 3 with a nozzle 4. An ejector nozzle 5 slides through nozzle 4, connected by means of a lever 6 to a working chamber 7 equipped with two pistons 8 and 9. A piston 9 equipped with a stop 10 and a spring 11, is kinematically connected to the cam 12 of the actuator 13. A branch pipe 14c is inserted into the working chamber 7 with a valve 15 for feeding the working chamber with seawater, Water is fed through the conduit 16.

The device works as follows.

Water under pressure is fed into the pipe 4 for the ejection and loosening of the rock. The nozzles 5, mounted for movement along the nozzle 4, reciprocate under the action of the actuator 13. The latter provides for the transfer of energy from the electric motor with the gearbox through the cam 12 and the stop

8 to a spring-loaded piston 9, which, moving ylevo, creates pressure in the working chamber 7, filled with seawater. Under the effect of the created pressure, the piston 8 also moves to the left. At the same time, rigidly connected to the piston B of the nozzles 5 moves to the left. The distance that the nozzles 5 move to is smaller than the distances that the piston moves

9 to a certain value, which is determined by the fluid losses in the working chamber (leakage through the seals of the piston rods).

In order to periodically compensate for the fluid losses of the working chamber 7, a valve 15 serves, which opens only when the pressure in the working chamber 7

drops to less than seawater pressure. Such a situation arises during reverse, when the cam 12, turning away from its top, allows the spring-loaded piston 9 to move to the right due to the spring 11. In this case, due to the pressure of water flowing from the conduit 16 to the inner narrowing walls of the nozzle 5, it moves

to the right. As the spring P pulls the piston 9 after the cam 12 for a longer distance than the possible travel, the pressure in the working chamber 7 drops and the valve 15 opens, through which the working chamber 7 replenishes. Next, the gas cylinder 12 performs the following Turn and the cycle repeats .

As a result of the reciprocating movement of the nozzle 5 to the outgoing jet

the pulse is periodically reported and the distance from the mouth of the suction tip is changed, which significantly increases the efficiency of excavation.

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Claims (1)

Invention Formula Ejector primer intake device suction dredge, including a suction pipe with a suction 0 with a tip and a water line having a loosening nozzle with a nozzle and ejecting nozzles located in front of the mouth of the suction tip, which is different in order to increase 5, the efficiency of the soil development process by jointly operating pulses and changing the position of the ejecting nozzle relative to the mouth of the suction nozzle, the ejecting nozzle is installed with the ability to move the loosening nozzle along the nozzle and is equipped with a drive for its movement, made in the form of a cam mechanism and a working chamber with It has pistons with rods, one of which is connected by means of a lever with 5 with an ejecting nozzle, and the other rod is spring-loaded and installed with the possibility of interaction with the cam mechanism by means of a stop fixed on the end of the rod.