Three-inlet spiral slag pushing type hydraulic cyclone

Abstract

The invention relates to a three-inlet spiral slag pushing type hydraulic cyclone, which comprises a settlement pot, an anti-backflow device, an inlet, an inlet pipe, a cover plate, an overflow pipe, a cylindrical body, a cone, an underflow pipe, a valve and a spiral slag pusher. The inlet design of the hydraulic cyclone is a three-inlet structure, the inlet employs three narrow and long gradually changed rectangular inlet pipes with three same cross section shapes, three inlets are symmetrically arranged with an angle presenting 120 DEC, the long edge of the rectangle is parallel to axis of the hydraulic cyclone, wherein one long edge is tangent with the inner surface of the cylindrical body, separation efficiency can be improved by the structure; the settlement pot is connected at the underflow port, the anti-backflow device is added in the settlement pot for preventing phenomenon of liquid leakage; a cylindrical hopper is connected at the lower part of the settlement pot, a spiral is arranged in the cylindrical hopper, and a speed regulation motor is used for uninterruptedly rotating the spiral for discharging solid slag though a spiral shaft outside the cylindrical hopper. According to the invention, slag deposited at the underflow port can be discharged in an automatic, stable and adjustable mode.

Description

technical field [0001] The invention relates to a three-inlet spiral slag-pushing type hydrocyclone, which is a device for purifying oil drilling fluid returned from the bottom of a well. Background technique [0002] At present, the known structure of the hydrocyclone is made of an overflow pipe, a feed pipe, a cylinder, a cone, a cover plate, and an underflow pipe. The liquid to be treated generates rotational motion by means of tangentially pressurized feed, and centrifugal sedimentation is used to separate the solid and liquid, while the solid slag is directly discharged through the sand outlet of the hydrocyclone or discharged from the hydrocyclone after being adjustable through the bottom outlet, so that It is easy to cause the blockage of the bottom outlet, which will affect the work of the hydrocyclone, or even fail to work. At present, hydrocyclones generally use a single feed pipe for feeding, which causes the axial asymmetry of the inlet structure, so that the ce...

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Problems solved by technology

[0003] The object of the present invention is to provide a three-entry spiral slag-pushing hydrocyclone to overcome the blockage of the bottom outlet of the existing hydrocyclone and to improve the offset of the vortex center. The hydrocyclone can not only improve the The processing capacity of the hydrocyclone can improve the adverse effect of the vortex center shift caused by the single inlet structure, thereby reducing the separation efficiency, and can automatically, continuously, and adjustable slag discharge, so that the bottom flow port remains unblocked and handles Slurry Leakage in Swirl Chamber and Control of Liquid Flow Velocity in Swirl Chamber

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