SU566627A1 - Appatus for producing drilling mud - Google Patents

Description

one

The device relates to mining and is intended for the preparation of drilling fluids used in the drilling of wells for various purposes: exploration, hydrogeological, etc.

A device for preparing solutions, suspensions, in which the degree of grinding of a solid material is controlled by the residence time of the suspension in mill 1, is known.

However, in such a device, the degree of grinding of the material being processed is not sufficiently controlled.

The closest solution to the invention is a device for preparing a paciBOpOB, comprising a housing with a hopper, a paddle rotor, a dispersing and reflecting plate, an output grid with a mechanism for adjusting its living section 2.

A disadvantage of the known construction is the clogging of the openings of the output lattice by particles of a comminuted material. This leads to a decrease in its throughput and, consequently, to a decrease in productivity. Cleaning the output grate is associated with stopping the mill, which certainly also affects its performance.

The purpose of the invention is to reduce the cost of working time for cleaning the holes in the output grid.

This is achieved by the fact that the mechanism for adjusting the living section of the output grid is made in the form of a plate with holes, with cones fixed on it, mounted coaxially with the holes of the output grid, the plate with holes being axially displaced relative to the output grid from the drive.

The drawing shows the proposed device, the cut.

The device contains a split cord 1, a blade rotor 2, fixed rigidly to the shaft 3 and consisting of two end disks 4 with welded corners 5 for fastening the working blades 6, a dispersing plate 7 that is connected hingedly to the bottom root, adjusting screws 8 providing the necessary working the gap between the dispersing plate and the rotor blades, thereby achieving a more efficient grinding of the solid phase of the drilling fluid and the most complete development of parts subject to wear.

In the upper part of the housing are a receiving tray 9, a hopper 10, a reflective plate I, an outlet grille 12, a drain tray 13 with a removable cover 14.

A channel for adjusting the living cross section of the output grille is mounted in the channel above the exit grating, including cones 15 fixed rigidly in the holes of the plate 16, mounted coaxially in the holes of the grate 12 and having axial misalignment, relatively fixed grate 12, feed screw 17 with a flywheel, a feed nut 18 reinforced in the lid 14, a ball pin 19 and guided sleeves 20 fixed to the plate 16. Due to the sleeves and pins 21, the possibility of lateral mixing is eliminated. This device works. Holes are drilled between the attachment points of the cones for passage of the slurry in plate 16.

The drive of the drying device is transmitted from the electric motor through a V-belt transmission. The housing and the electric motor are mounted on a common frame 22 of welded construction.

When using the device in a borehole, it is mounted in a circulating system, with the end of the chute being supplied to the receiving chute 9.

The device works as follows.

The drilling fluid entering the casing from the circulating trough through the receiving tray is captured by the blades of the rotating rotor. When moving along the dispersing plate, intensive grinding of the material particles takes place. Additional grinding of the solid phase takes place when the jets ejected by the rotor blades hit the output grating, cones, reflective plate, as well as during the subsequent movement of the material along the output grating and passing through its annular holes.

Due to the presence of the reflective plate, the solution is supplied through the outlet grating under pressure and in the space between the plate 16 and the grate vortex flows are formed, which contribute to further homogenizing the solution and dispersing the solid particles contained in it.

During operation, the dimensions of the holes in the exit grating determine the final degree of grinding of the solid material. .

The grinding degree is adjusted as follows.

5 Manual rotation of the flywheel feeds the screw 17, with which the plate 16 is connected through the ball pin. The plate with the cones 15 is moved in the axial direction relative to the fixed output grid 0 and the ring gap between the holes of the grid and the cones depending on the stroke and direction of the screw feed.

The cleaning of the output grating during operation 5 is performed by briefly increasing the gap by raising the slab above the grating.

The finished solution from the mill is transferred back to the circulating system via the drain pan.

0 Regulation of the quality of drilling fluids is made by introducing chemical reagents, clay, supplies, and other components through the hopper.

Claims (2)

Invention Formula A device for preparing drilling fluids, comprising a housing with a hopper, a paddle rotor, dispersing over and a reflection plate, an output grating with a mechanism for adjusting its false cross section, characterized in that, in order to reduce the time spent on cleaning the openings of the exit grate, the mechanism for adjusting it the living section is made in the form of a plate with holes, with cones fixed to the pegs, mounted coaxially with the holes of the output grating, and the plate with holes is placed with the possibility of axially reshstki displacements relative to the output from the drive. Sources of information taken into account in the examination . Author's certificate USSR №191331, cl. Bc 13/09, 1963. 2. USSR author's certificate No. 328941, cl. On 02C 23/00, 1970. five J 20 13