SU916672A1 - Ejector-type soil intake - Google Patents

Description

The invention relates to the development of soils by hydromechanized method.

A ejector primer-collecting device is known, which includes nozzles for pressure water, equipped with a hydraulic pulsator made in. in the form of two asymmetric membranes, one of which rotates inside the nozzle, and the other is fixed at the entrance to it [1].

However, when the pulsator stops, the holes in the stationary membrane often overlap with the continuous part of the moving membrane, as a result of which it is impossible to start the pulsator without external intervention, moreover, the ejecting jet is not interrupted, but only changes its flow rate, which leads to a decrease in the efficiency of the action. pulsating jet.

Closest to the offer is a hydraulic ejector of a dredger of the dredger,

2

including water main, nozzles for pressure water and housing with impeller placed in it with disks and vanes 1 2

The disadvantages of the known devices are the complexity and unreliability of the design of the flow interrupter / As used shaft and bearings operating in the aquatic environment.

The purpose of the invention is to increase the reliability of the device.

This goal is achieved by the fact that in the device, including a conduit, nozzles for pressure water and a housing with an impeller placed in it with disks and blades, the impeller is equipped with an additional blade, having a C-shaped cross section, with an additional blade installed main between the edges of the discs protruding behind the main vanes.

Figure 1 shows the device, a general view; figure 2 - housing with PA3 916672 4

barrel wheel, top view; Fig.Z ~ impeller with a shovel.

The device consists of housing 1, conduit 2, ejecting nozzle 3, loosening nozzle 4. The working wheel consists of the top 5 and bottom 6 disks and blades 7 fixed between them. The top disk has an opening 8 for supplying water to the impeller. The disks 5 and 6 have 10 elongated edges 9 ”, which along the outer perimeter are provided with a blade 10 with a cylindrical surface, the outer curvature of which coincides with the curvature of the inner surface 15 ′ of the housing. The impeller with a minimum clearance is placed in the housing.

The bottom and sides of the housing, as well as the impeller, are lined with antifriction material. 20

The operation of the device is as follows.

one

Water under pressure from the conduit 2 through the opening 8 enters the inside of the 25 impeller on the blades 7 and causes it to rotate, while the elongated edges 9 slide along the walls of the housing 1. During rotation of the impeller, the associated blade 10 with a cylindrical surface periodically blocks the inlet openings ejection 3 and loosening 4

nozzles, which ensured pulsation of both the ejecting and loosening jets, and their effectiveness is increased.

The proposed device eliminates shafts and bearings and creates a simpler and more reliable mechanism for pulsating water jets.

Claims (1)

Claim An ejector primer-collecting device, including a water line, nozzles for pressure water and a housing with an impeller placed in it. Discs and vanes, characterized in that, in order to improve the reliability of the device, the impeller is equipped with an additional blade that has a C-shaped cross section , while the additional blade is installed behind the main between the edges of the disks protruding behind the main blades.