SU407010A1 - DRILLING EQUIPMENT - Google Patents

Description

I

The invention relates to a dredger of ladies, on the tube of which there is a jet pump — an ejector — installed.

Known grubitozabornye devices of dredgers, including an ejector suction tip with a water collector and hydraulic ripper.

In the known devices, the water for ejection and hydromining of the Nostunat node by the same pressure, and the same stem of the ripper does not allow to change the direction of the strings, which reduces their efficiency.

The purpose of the invention is to increase the efficiency of the soil catcher.

This is achieved by the fact that in the water reservoir, made in the form of a vortex chamber with a tangentially connected water supply system. A branch pipe is installed in the peripheral part of the tube.

The barrel of the hydraulic ripper is flexible and equipped with controllable leads.

FIG. 1 shows a dredging device, longitudinal section; in fig. 2 is a view along arrow A in FIG. one.

The device includes a collector / for the supply of pressure water to the ejector, which is made in the form of a vortex chamber with a tangent 2

Optional water inlet 2.

The inlet part of the ejector is formed by a cylindrical nozzle - a fairing 3, 5 connected to the thickened annular part of the front cover 4, which, in turn, is attached to the flange 5 of the collector body /. The collector rolls toward the flange 6 of the cylindrical mixing chamber 7, which

0 is connected to a conically expandable part (diffuser) 8 of the suction pipe 9.

In the upper part of the lid 4 there is a hole for supplying water to the hydrofipper, which is provided with a cylindrical fitting 10 on the side 10. The housing 11 of the telescopic portion 12 of the hydrofluidizer joins fitting W. The telescopic section is clamped with flexible hose 13 with nozzle 14 at the end.

0 In the peripheral part of the collector 1, a spiral flow channel 15 is installed, supplying water to the inlet opening of the hydraulic ripper. Attachable controlled nozzles 16 are connected to nozzle 14, passing through

5 nanowires 17 on the drum of the operational winch. The cylindrical part 3 is fastened, for example, by welding, kerchiefs 18, which during assembly provide a strictly concentric arrangement of the nozzle 5 relative to the mixer noii chamber 7.

The principle of operation of the device is as follows.

When tangential supply of working water in the reservoir / rotation occurs flow, resulting in a piezometric pressure in it increases from the center to the periphery. The spin flow is created so that the water jets in the central part emerge through the ejector nozzle at optimal pressure. Flow: to water, moving in the peripheral part of the collector, flows into the pilot channel 15 and is introduced into the pipe 10 at a high pressure compared with the ejector. Due to this, it is possible to bring water with an optimal pressure, and therefore, with minimal energy losses, and to the ejector, "to the hydraulic ripper.

The possibility of changing the direction of jet ejection by means of leads 16 and changing the distance from the bottom provides an increase in the efficiency of loosening and weighing the soil.

Subject invention

Claims (2)

1. The earthmoving device of the dredge, including an ejector suction nozzle with a water collector and a hydraulic ripper, characterized in that, in order to increase the efficiency of the soil intake, the water collector is installed in the form of a vortex chamber with a tangentially connected water inlet pipe, in the peripheral part of which there is a spiral straightening channel. 2. A device according to claim 1, characterized in that the barrel of the ripper is flexible and provided with controllable leads. // // -, 0 Р - - and - Chy .... :: kg .: ,, 22ЬУ | р4 | L f 4ftЫ ---) 1g-- i „222: k -x- J psasadka:. ,,,„,