CN2531102Y

CN2531102Y - Girdle type mud shaker

Info

Publication number: CN2531102Y
Application number: CN 01278362
Authority: CN
Inventors: 胡俊成; 杨春艳
Original assignee: Second Machinery Plant Of North China Petroleum Administration
Current assignee: Rongsheng Machinery Mfg. Co., Ltd. of Huabei Petroleum, Heibei
Priority date: 2001-12-14
Filing date: 2001-12-14
Publication date: 2003-01-15
Anticipated expiration: 2011-12-14

Abstract

A ring belt type slurry vibration sift belongs to an oil gas drilling well project cooperation device and is a device to process drilling well slurry. The utility model comprises a liquid inlet bucket arranged on the base, a sift box, a tense vibration device and a sifting net, the sifting net is arranged on the base through a spring, the sifting net is arranged inside the sifting box, the utility model is characterized in that the sifting box is provided with a driving roller, a supporting roller, a guiding roller, and a tension roller, the driving roller is arranged on the front end of the sifting box and the two ends of the sifting net to be connected to form a ring shape, and the sifting net is arranged on the driving roller, the supporting roller, the guiding roller, and the tension roller, and is tightly tensed through the tension roller. A cleaning plate is fixedly arranged on the base, the inside of the sifting box is also provided with a cleaner. The vibration sift can arrange fine sifting net with 120 to 200 number of holes, the drilling well can be made to realize the purpose of one time purification, the drilling well liquid cooperation processing device such as the slurry remover, the sand remover, and the three level fixed control device can be reduces, and the drilling well cost can be reduced.

Description

Endless belt formula mud vibrating screen

Technical field

The utility model belongs to a kind of oil and gas well drilling ancillary engineering facility device, is a kind of equipment of handling mud.

Technical background

At present in the oil and gas well drilling process, used drilling fluid (mud) purifier is a mud vibrating screen, it is to constitute by being installed in the feed liquor bucket on the base and being installed in screen box on the base, screen cloth, vibration exciter etc. by isolation spring, and screen cloth is vertical or horizontal being tightened on the screen box.The purification of mud is to rely on vibrosieve to filter (screening) by the screen cloth of certain movement locus vibration, and sand grains bigger in the mud is stayed on the screen cloth.Because the vibration of screen cloth, the screen cloth of sand grains can being thrown and migrated out is finished the purification to mud.Use this mud vibrating screen, when sand content in the mud is big, during perhaps selected sieve number higher (mesh size is little), silt particle is piled up on screen cloth easily and is formed big silt particle group, at this moment the throwing power of vibrosieve just can not be thrown silt particle group, influences its migration velocity, has reduced desanding effect, even the phenomenon that can cause mud to overflow, also can influence application life of screen cloth.Therefore the sieve number of vibrosieve is subjected to the restriction of mud capacity and screen area, the order number of screen cloth generally can only be 40-100 order/inch (being aperture 0.425-0.16 millimeter), still there is tiny sand grains in the mud after the processing, also needs to handle once more with desilter and desander.

The utility model content

The purpose of this utility model is a kind of endless belt formula mud vibrating screen of design, and this vibrosieve can improve sieve number, improves screening efficiency, reaches the purpose to the drilling fluid primary purification, reduces relevant drilling well auxiliary equipment.

Technical solution of the present utility model is to realize like this, a kind of endless belt formula mud vibrating screen, constitute by the feed liquor bucket and screen box, screen cloth and the vibration exciter that are installed on the base, screen box is installed on the base by isolation spring, screen cloth is installed in the screen box, and vibrator is installed on the screen box top, and its special character is, (1) at the screen box front end driven roller is installed, drive motors is connected by an end of shaft coupling and driven roller.(2) guide roller, carrying roller two ends are separately installed with bearing, and bearing is installed on the minor axis, and minor axis is fixed on the screen box sidewall.(3) the formation ring-type that is bound up is buckled by connecting in the screen cloth two ends, is looped around on driven roller, guide roller, carrying roller, the idler roller.(4) pallet places in the screen cloth ring, and is fixedly mounted on the base, and the pallet side has leakage fluid dram.(5) cleaning disc is fixedly mounted on the base.(6) tensioning apparatus is made of stretcher and idler roller, and stretcher is installed on the sidewall of screen box.

In above-mentioned technical solution, its special character also is, washer also is installed on screen box.

In above-mentioned technical solution, its special character also is, stretcher by Connecting jont, spring, gland, nut, screw rod, and hinge seat etc. constitute, spring housing is on the bar of Connecting jont, nut is pressed on the spring by gland, nut and screw rod are bound up, and screw rod connects with the hinge seat mutually by bearing pin.

The utility model has the advantages that: (1) not only vibrates with screen box owing to screen cloth, it also does around the movement under the drive of driven roller, when below the screen cloth face is around to, silt on the screen cloth face can fall automatically, be bonded at the fine deposit in the sieve screen apertures, when by cleaning disc, also can be cleaned, therefore can on screen cloth, not gather silt.(2) because of cleaning screen cloth, can not produce the phenomenon of stopping up sieve screen apertures,, improve desanding effect so the fine screen mesh of order number at 120-200 order (aperture 0.14-0.075 millimeter) can be installed, make drilling fluid reach the purpose of primary purification, do not need to carry out after-treatment.(3) can reduce supporting treating apparatus of drilling fluid such as desilter, desander and three grades of solid control equipments, reduce drilling cost.

Description of drawings

Accompanying drawing 1 is a structural principle schematic diagram of the present utility model.

Accompanying drawing 2 is the connecting structure schematic diagrames between drive motors and the driven roller.

Accompanying drawing 3 is structural representations of stretcher.

The specific embodiment

Feed liquor bucket 1 is fixedly welded on the base 13, and screen box 6 is installed on the base 13 by 4-8 isolation spring 14.Driven roller 7 is to be made by thick walled steel tube, and the surface has rubber layer, and two ends have minor axis, are installed in the screen box front end by bearing and bearing support, and an end of driven roller connects with drive motors 19 mutually by flexible clutch 18.Carrying roller 2 is also made by thick walled steel tube, and its diameter is littler than driven roller diameter of steel tube, and the surface has rubber layer, two ends are equipped with bearing, and bearing is installed on the minor axis, and minor axis is fixed on the sidewall of screen box 6, as the case may be, a plurality of carrying rollers 2 can be installed, install 6 in this example.The structure of

guide roller

9,10,12,17 is identical with the structure of carrying roller 2, and bearing is installed at the guide bars two ends respectively, and bearing is installed on the minor axis, and minor axis is installed on the sidewall of screen box 6.The structure of idler roller 16 also with the structural similarity of carrying roller 2, bearing is installed at two ends respectively, bearing is installed on the minor axis, the Connecting jont 20 of minor axis and stretcher 15 connects mutually, stretcher 15 is installed on the sidewall at screen box 6 rear portions by hinge seat 25, stretcher 15 by Connecting jont 20, spring 21, gland 22, nut 23, screw rod 24, and hinge seat 25 etc. constitute, spring 21 is enclosed within on the bar of Connecting jont 20, nut 23 is pressed on the spring 21 by gland 22, nut 23 and screw rod 24 are bound up, and screw rod 24 connects with hinge seat 25 mutually by bearing pin.Cleaning disc 11 is fixedly mounted on the base 13 of directive wheel 10 belows, and its length should be greater than the width of screen cloth.Each sulfuration of the dual-side of screen cloth has rubber or rubber and plastic band, the about 2-3 of its width centimetre, the two ends of screen cloth is also vulcanized rubber or rubber and plastic band, the about 3-5 of its width centimetre, screen cloth is looped around on 7,6 carrying rollers 2 of driven roller,

guide roller

9,10,12,17 and the idler roller 16, by connecting buckle the screen cloth two ends are linked together, form a circular screen, make

guide roller

12,9 be in the circular screen outside.Washer 8 is by nozzle and the export mixes that is installed on the pipeline, several washers 8 are installed in side by side and clean on the pipeline, each washer nozzle about 100 millimeter of being separated by, the two ends of scavenge pipe are fixedly mounted on the both sides of screen box 6, and washer 8 is placed in the circular screen.Shunting pallet 3 also places in the circular screen, and its both sides are fixed on the base 13.Vibrator 4 usefulness bolt are installed on the top of screen box 6.

Choose suitably the screen cloth 5 of small perforations greatly according to the needs at scene, it is installed on driven roller 7, carrying roller 2,

guide roller

9,10,12,17 and the idler roller 16, form the ring-type screen cloth, the nut 23 on the turn stretcher 15 is strained screen cloth 5 by idler roller 16.In cleaning disc 11, inject clear water, the screen cloth below guide roller 10 is in the clear water.Start motor 19, drive driven roller 7 by shaft coupling 18 and rotate, rotate thereby drive screen cloth 5, screen box 6 begins vibration under the effect of vibrator 4 simultaneously.Drilling fluid flows on the screen cloth 5 by feed liquor bucket 1, under the effect of gravity and vibration, mud liquid flows in the pallet 3 by screened port, silt particle is stayed above the screen cloth 5, rotation along with screen cloth, when turning over driving wheel 7, part silt particle can fall from the screen cloth face, the thinner silt particle of a part still sticks on the screen cloth face, treat that the screen cloth face is rotated further when following, under the effect of vibration, can fall a part again, when passing through the position of washer, gas that sprays from the nozzle of washer 8 or clear water can wash remaining silt particle get off.Fill clear water in the cleaning disc 11 of guide roller 10 belows, make its liquid level surpass guide roller more than 10,, can further clean screen cloth, the screen cloth face is kept clean when the screen cloth 5 of vibration during by the clear water in the cleaning disc 11.The rotary speed of driving wheel 7 can change as required, when the sand content in the mud is bigger, can accelerate its velocity of rotation.

Claims

1. endless belt formula mud vibrating screen, constitute by the feed liquor bucket (1) and screen box (6), screen cloth (5) and the vibration exciter (4) that are installed on the base (13), screen box (6) is installed on the base (13) by isolation spring (14), screen cloth (5) is installed in the screen box (6), vibrator (4) is installed on screen box (6) top, it is characterized in that:

1. the front end of screen box (6) is installed driven roller (7), and drive motors (19) is connected by the end of shaft coupling (18) with driven roller (7);

2. guide roller (9,10,12,17), carrying roller (2) are separately installed with bearing, and bearing is installed on the minor axis, and minor axis is fixedly mounted on screen box (6) sidewall;

3. the formation ring-type that is bound up is buckled by connecting in screen cloth (5) two ends, is looped around on driven roller (7), guide roller (9,10,12,17), carrying roller (2), the idler roller (16);

4. pallet (3) places in the ring of screen cloth (5), and is fixedly mounted on the base (13), and pallet (3) side has leakage fluid dram;

5. cleaning disc (11) is fixedly mounted on the base (13);

6. be made of stretcher (15) and idler roller (16) at tensioning apparatus, stretcher is installed in the sidewall of screen box (6)

On.

2. endless belt formula mud vibrating screen according to claim 1 is characterized in that, washer (8) also is installed on screen box (6).

3. endless belt formula mud vibrating screen according to claim 1 and 2, it is characterized in that, stretcher 15 by Connecting jont 20, spring 21, gland 22, nut 23, screw rod 24, and hinge seat 25 constitute, spring 21 is enclosed within on the bar of Connecting jont 20, nut 23 is pressed on the spring 21 by gland 22, nut 23 and screw rod 24 are bound up, and screw rod 24 connects with hinge seat 25 mutually by bearing pin.