SU1692649A1 - Device for fine purification of drilling mud - Google Patents

Abstract

This invention relates to the separation of suspensions by centrifugal forces. The goal is to increase the separation efficiency and productivity of the apparatus. Inside the housing (K) 1, there is a two-way screw trough (VZH) 2. Under VZh 2 there is a nozzle (V) 4 for withdrawing a heavy fraction. Over VZh 2 installed P 5 outlet light fraction. Inside VZh 2 on axis K 1

Description

This invention relates to the separation of suspensions by centrifugal forces and can be used in the mining, chemical and other industries.

The purpose of the invention is to increase the separation efficiency and productivity of the apparatus,

FIG. 1 shows an apparatus for fine cleaning of drilling mud, general view; FIG. 2 is a section A-A in FIG. one.

The apparatus includes a housing 1 installed inside the housing 1 of a screw chute 2 and a nozzle 3 of supplying the initial power supply to the housing 1. Under the screw chute 2 there is a device with two branch drains. It is made in the form of a branch pipe 4 for withdrawing a heavy fraction. Above the screw gutter 2 is installed nozzle 5 outlet light fraction. Inside the screw chute 2, the cylinder 6 is mounted along the axis of the housing 1, mated with the nozzle 5 for discharging the light fraction. An additional port 7 is installed with the possibility of vertical oscillations under the source supply pipe 3. Channel 8 of the additional pipe 7 in the lower part is made with expansion. Additional pipe 7 is installed on the spring 9. On the outer side of the housing 1 in its lower part is located the casing 10. On the outer corps of the housing 1 and the inner side of the casing 10 are mounted relative to each other, the annular projections 11

With the casing 10 and the internal space of the housing 1 above the additional pipe 7 communicates a pipe 12 with an adjustable cross section. To regulate the cross section of the pipeline 12, a valve 13 and a nut 14 are mounted on it. In the lower part of the housing 1, holes 15 are made, and in the lower part of the cylinder 6, holes 16 are made 16. The screw trough 2 is made in two parts.

The feed supply nipple 3 is located in the upper part of the housing 1. The apparatus is mounted on the supports 17.

The device works as follows. The original suspension comes through

the supply pipe 3 of the initial power supply to the housing 1 and falls on an oscillatory system consisting of an additional pipe 7 and a spring 9. The oscillations of the additional pipe 7 are made with a frequency equal to

the frequency of oscillation of the fluid, however, due to the inertia of the additional nozzle 7, having a certain mass, these oscillations are out of phase relative to each other. The creation of oscillations leads to the destruction of the structure of the drilling fluid, enveloping large particles. Further, the suspension section falls onto the screw chute 2 and moves along it. Under the action of centrifugal forces large

the particles are thrown to the periphery of the screw chute 2 and out through the holes 15, and then through the pipe 4. The clarified stream through the holes 16 enters the cylinder 6, from where it is removed through the pipe 5 to discharge the light fraction. The liquid phase of the pulp with heavy particles accumulates under the body 1. Since under the action of the initial feed coming through the nozzle 3, a vacuum is created above the additional nozzle 7, the liquid phase of the pulp is sucked through the pipe 12 into the upper part of the body 1. The passage between the annular projections 11 The liquid phase is freed from the remaining solid particles. The regulation of the cross section of the pipeline is carried out by a valve 13 and a nut 14.

Claims (1)

Claims An apparatus for fine cleaning of drilling mud, comprising a housing, a screw groove mounted inside the housing, an initial power supply nozzle into the housing, a heavy fraction removal device under the screw groove and a light fraction removal pipe installed above the screw groove, characterized in that in order to increase the separation efficiency and productivity of the apparatus, it is equipped with a screw chute installed inside the housing axes and a cylinder of light fraction coupled to the outlet pipe with holes in the lower part, installed under the source power supply nozzle with the possibility of vertical oscillations with an additional nozzle located on the outside of the case in its bottom part, installed on the outside of the case and internal offset side of the housing 5 relative to each other by annular protrusions communicated with the casing and the internal space of the housing above the additional pipe with an adjustable cross section, wherein the screw chute is two-way and the source power supply pipe is located in the upper part of the housing.