RU2186635C1 - Vibrating screen - Google Patents

Abstract

FIELD: apparatuses for separating suspensions and cleaning drilling mud from slime, possibly in oil and gas industry branches. SUBSTANCE: vibrating screen includes foundation, frame mounted by means of shock absorbers and provided with vibrator, two successively arranged screening webs secured to frame. Discharging end of first screen web is arranged over charging end of second screen web. First screen web is mounted with possibility of changing inclination angle by 0-10 degrees. Vibrating screen includes additional upper floor having rigid frame-type screen with preliminarily tensioned screen web and it is made with possibility of adjustment of the whole vibrating frame by inclination angle in range 2-10 deg. Vibrating screen has door for guiding drilling mud onto first filtering screen. EFFECT: enhanced quality of cleaned drilling mud, lowered moisture content of slime, enlarged technical possibilities. 2 cl, 2 dwg

Description

 The invention relates to a device for separating suspensions and cleaning mud from sludge and can be used in the oil and gas industry.

 A vibrating screen according to A. S. USSR 724225, 07 V 1/48 is known, comprising a trough body mounted on shock absorbers, a bed, a frame, a mesh, a vibrator and a tension device.

 Also known is the "Method of filtering solutions or liquid media with solid impurities and a device for its implementation" according to the patent of the Russian Federation 2061558, 07 V 1/40, containing a frame with a receiving collector, an inlet pipe and a distributor of the solution flow, vibrocasing, sieve.

The closest known invention is a vibrating screen according to the USSR author's certificate 848084, B 07 V 1/40, E 21 B 21/00, containing a frame, a frame installed with shock absorbers on the frame and equipped with a vibrator, two successively arranged screen cloths, the first screen the canvas is installed with the ability to change the angle from 0 to 10 ^o .

 The technical result of the invention is improving the quality of drilling fluid cleaning, reducing the moisture content of the sludge and expanding technological capabilities.

The technical result is achieved by the fact that the vibrating screen, including the bed, the frame installed using shock absorbers and equipped with a vibrator, two sequentially mounted on the frame of the sieve cloth, the first of which is installed with the possibility of changing the angle from 0 to 10 ^o , and its discharge end is located above the loading end of the second screen cloth is provided with an upper tier consisting of a rigid frame sieve with a pre-stretched screen cloth and is configured to adjust the frame to an angle of inclination from -2 to + 10 ^o .

 The vibrating screen may be provided with a manhole for directing the drilling fluid to the first screen cloth.

 In Fig.1 shows a vibrating screen, General view.

 Figure 2 shows a vibrating screen, top view.

The vibrating screen contains a frame 1, a frame 2, equipped with a vibrator 3, shock absorbers 4. The main filter sieve of the lower tier, fixed on the frame 2, consists of two sieve sheets 5 and 6, which are arranged in series, and the discharge end of the sieve sheet 5 is located above the loading end of the sieve sheet 6, and a feeding trough 7. The additional upper tier consisting of a frame with increased stiffness sieve pretensioned sieve cloth 8 with the possibility of adjusting the entire vibrating frame 2 to the inclination angle of -2 to +10 ^o and provided with nny hatch 9 for directing drilling fluid through a filtering sieve 5.

 The drilling fluid enters from the feed manifold through the pipe 10 into the feed hopper 11. From the hopper through the chute 7, the drilling fluid enters the upper tier of the rigid frame sieve 8, where the drilling fluid is preliminarily cleared from large particles of cuttings. The sludge of the upper tier, moving along the sieve surface of the rigid frame sieve 8, is drained and falls on the tray 12 for discharge into the dump.

Pre-cleaned drilling fluid from the upper tier enters the sieve cloth 5 of the lower tier, where the main cleaning of the drilling fluid occurs. If there is no need for preliminary cleaning of the drilling fluid, it is fed through the hatch 9 directly to the sieve cloth 5 of the lower tier. The sludge allocated on the sieve cloth 5, as a result of vibration, moving along the surface of the sieve cloth and getting on the sieve cloth 6, is subjected to additional drying, drained and falls into the tray for discharge into the dump 12. To adjust the degree of drying of the sludge is the device 13 adjust the angle of elevation at an angle of inclination from -2 to +10 ^o vibrating frame 2.

Claims (2)

1. Vibrating screen, including a bed, a frame installed using shock absorbers and equipped with a vibrator, two successively mounted screen frames, the first of which is installed with the possibility of changing the angle of inclination from 0 ^o to 10 ^o , and its discharge end is located above the loading end of the second sieve cloth, characterized in that it is equipped with an upper tier, consisting of a rigid frame sieve with a pre-stretched sieve cloth, and is configured to adjust the frame at an angle of inclination from -2 to + 10 ^o .  2. Vibrating screen according to claim 1, characterized in that it is provided with a hatch for directing the drilling fluid to the first screen cloth.

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