Multistage variable-vibration rock debris cleaning and screening device

Abstract

The invention relates to a multistage variable-vibration rock debris cleaning and screening device, which comprises a water tank, a screen, a vibration motor and a vibration plate, the water tank is arranged above the vibration plate through vibration supporting rods, the vibration motor is arranged on the vibration plate, vibration reduction supporting pieces are arranged under the vibration plate, and a plurality of supporting protruding edges arranged in the length direction of the water tank are further arranged between the screen and the bottom of the water tank. The screen is placed on the supporting protruding edges, the heights of the supporting protruding edges are sequentially reduced to enable the screen to have a certain gradient, and the supporting protruding edges evenly divide the space between the screen and the bottom of the water tank into a plurality of subareas. The vibration transmission efficiency and adjustability are improved through the combination of a vibration base, the vibration supporting rods and variable vibration columns, the excitation effect is improved through the wavy structure of the bottom face of the water tank, rock debris with different particle diameters is screened, washed and classified, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the field of debris screening equipment, in particular to a multi-stage variable vibration debris cleaning and screening device. Background technique [0002] The drilling fluid shale shaker is an important solid control equipment, and it is also the basis and fundamental device for geological logging to retrieve cuttings. In drilling with drilling fluid as the medium, cuttings cannot be retrieved without the shale shaker geological logging. The drilling fluid carries the cuttings broken by the bottom hole drill bit back to the wellhead, and then flows through the overhead tank into the buffer tank. According to the requirements of liquid-solid separation, the vibrating screen has a variety of screen cloths for replacement, but only the same regular screen holes are arranged on the same screen cloth, so that the same screen hole layout can achieve the purpose of liquid-solid separation, which is also aimed at The cuttings brok...

AI Technical Summary

Problems solved by technology

[0004] (1) Ordinary vibrating screens are only suitable for liquid-solid separation of cuttings particles with uniform particle size and similar shape, and there are great limitations in the applicable surface of liquid-solid separation;

[0005] (2) Ordinary vibrating screens cannot sort and separate cuttings on the screen surface according to the timing of cuttings return when screening cuttings, and cuttings are mixed on the vibrating screen, which is not conducive to deep homing;

[0006] (3) Geological logging does not have its own cuttings screening device, and it has no selectivity in special working environments;

[0007] (4) Cuttings returned out of sequence without timing and stirred and cleaned without sequence to make the cuttings more mixed, which is not conducive to the real identification of cuttings in a limited depth;

[0008] (5) The rock cuttings fishing and cleaning process is discontinuous, and organic unity has not been realized, resulting in duplication of labor, increased labor intensity, and is not conducive to the efficient use of clean water resources;

[0009] (6) The conventional vibrating screen is an established device, which has poor variability and adjustability, and cannot achieve compoundness in mechanical vibration;

[0010] (7) The operating cost of equipment is high, which is not conducive to the conversion of new and old kinetic energy

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