SU832048A1 - Device for taking soil samples - Google Patents

Description

one

The invention relates to mining equipment, in particular to devices for sampling soil and is intended for routine drilling of wells with an automatic process of unloading a sample after each trip.

A screw screw is known for routine well drilling, comprising a rod, a split core receiver, and a core receiver opening mechanism (locks), and a pull (receiver) 1.

The disadvantages of the projectile are the need for mounting and dismounting the core-liner after each flight, considerable labor-intensiveness and time duration for each flight, and the complicated design of the core tube due to the presence of pressure locks on it.

It is also known a soil sampling device comprising an outer core pipe with a rock-breaking tool, a removable core receiver with a thrust and a mechanism to open a core receiver with an emphasis. The removable core receiver is made in the form of a coil spring and has pressure relief.

The core receiver is placed inside the hollow body, on the inside surface.

| which are made annular grooves under pressure skiing core. receiver. This device allows you to automate the process of extracting soil samples from the core receiver 2.

However, the disadvantage of this device is the complexity of its design.

0

The purpose of the invention is to simplify the design of the device.

This goal is achieved in that the removable core receiver is made in the form of two half-shells, which are bridged

5 along the generators, and the opening mechanism is made in the form of levers intersecting in the same plane, fixed on the upper ends of the half shells and pivotally connected at the point of intersection with the thrust, and also in that the levers are interconnected by a spring.

FIG. 1 shows the proposed device, a longitudinal section; in fig. 2 shows section A-A in FIG. one; on

5 of FIG. 3 - core receiver at the time of unloading the soil sample.

The device consists of an outer core pipe 1 with a rock bending tool 2. Inside the column pipe 1 there is a removable core.

the receiver 3, consisting of two half-shells 4. The upper ends of the half-shells 4 are attached to the levers 5 mounted on the hinge 6. The hinge b is located on the string 7. The levers 5 are interconnected by an annular spring 8. The device also has a stop 9, located at the wellhead.

The device works as follows.

After the passage of the voyage, the core receiver is pulled out of the core pipe 1 with the help of the rod 7. pivot around hinge b (in fig. 3). In this way, the core receiver is opened and released from the soil sample.

During the reverse movement of the rod 7, the spring 8 returns the half-tubes 4 to their original position, pressing them tightly against each other along the generators, and the core receiver is installed in the core pipe 1 for the passage of the next flight.

Thus, the proposed device has a simpler design and allows the automatic release of soil samples.

Claims (2)

1. A device for taking samples of a carcass, containing an outer core pipe with a rock-breaking tool, a removable core receiver with a thrust and a mechanism for opening the core receiver with a stop, characterized in that, in order to simplify the design, the removable core receiver is made in the form of two half-shells, which join along forming, and the disclosure mechanism is embodied in the form of levers intersecting in one plane, fixed on the upper ends of the half shells and articulated at the intersection point with a thrust. 2. A device according to claim 1, characterized in that the levers are interconnected by a spring. Sources of information taken into account in the examination 1.Rebrin B.M. Drilling wells in geological engineering. M., Nedra, 1973, p. 95, fig. 34 a. 2. USSR author's certificate number 612003, cl. E 21 V 25/00, 1976. (pusl FIG. 2 fig.Z