SU445879A1 - Sediment sampling device - Google Patents

Description

one

The invention relates to the field of soil investigation, which is essentially a device for sampling bottom sediments.

The known devices for sampling 5) bottom sediments, including an external pipe with an adapter, a choke and a hose in which an internal pipe with a gap is installed, packed with a reed shoe, stopper frame and a water-permeable soil receiving sleeve, do not provide the required quality of samples to be taken. due to the disruption of the natural composition of the soil and the change in its particle size and mineralogical composition.

 The purpose of the invention is to ensure that the natural structure of the samples is maintained. 20

This is achieved so that in the upper part of the inner tube a diffuser with a funnel and a nozzle is mounted, with one end of the nozzle

| placed in the funnel diffuser, and. the other, having a collar, is located in the inner cavity of the adapter of the outer tube with the possibility of relative axial movement.

SUMMARY OF THE INVENTION is explained by chevtezh.

Sampling device

bottom sediments include an outer pipe I, connected with an adapter 2 with a fitting 3 and a slurry 4, an inner pipe 5 with a diffuser 6 and nozzle 7 installed in it, a water-permeable sleeve 8, a peyi No. 2 shoe E.i and a bolt 10.

The principle of operation of the device is as follows.

After lowering it on a rope or on the bottom of the volumetric tube with the help of a pump, a hose 4 supplies water, the borer, the passage through the nozzle 3, the internal cavity of the adapter 2, the nozzle 7, the diffuser 6, through tubes fall into the annular gap of the outer tube I and the inner tube 5 and erodes the soil in the annular volume between the ends of these pipes, as well as under the surface.

As the soil is washed down, a pipe 5 is driven by its own weight and water pressure on the upper end of the nozzle 7 rigidly connected to it, settling down, protecting the core, which fills the permeable wall receiving sleeve 8 from erosion, and the ground slurry leaves the well through the annular gap between it walls and outer tube. At the same time, the water that saturates the core is sucked through the walls of the water-permeable soil receiving sleeve. In an ejector device J of the diffuser 6 and the nozzle 7sM enters the annular space. Thus, the discharge that occurs in the cavity of the soil-receiving sleeve 8 promotes its better filling with soil directly through the material, its stenon prevents the washing out of soil particles from the core and the disruption of its granulometric and mineralogical

composition.

As the well deepens outside the pipe I, suspended on a rope or hose, is lowered after the inner pipe 5, which is continuously immersed in advance until it is filled with soil. Then the water supply stops, the inlet of the cutting shoe 9 is blocked by the gate 10 and the whole device rises to the surface .

STOPPING INVENTIONS

Device for sampling bottom sediments, which includes an outer pipe with an adapter, a choke and a pipe in which the inner pipe is fitted with a gap, provided with a cutting shoe, a shutter and a permeable soil receiving sleeve fixed in the lower part of the inner pipe, about 20 ml. so that, in order to provide for the preservation of the natural string sampling, in the upper part of the inner tube a diffuser with a second and a nozzle is mounted, with one end of the basement placed in the funnel of the diffuser, and The outer cavity of the adapter of the outer tube with the possibility of relative axial movement.