A basket system for a shale shaker includes a front, solids discharge end (4) and a rear, feed end (2), spaced apart by opposed first and second sides (6). The feed end includes a fluid retaining wall (3). A first screen deck frame (16) is mounted or mountable to the basket (1) for supporting a screening surface (14) and forming a first screen deck (11) in use. The screening surface (14) of the first screen deck has a lower, feed receiving end that is proximal to the fluid retaining wall (3) at the rear end of the basket and a distal, higher, solids discharge end at the front end of the basket. The basket further includes at least one mounting for mounting at least one additional screen deck frame (42) above or below the first screen deck frame (16).
A shale shaker includes a basket (1) having a front, solids discharge end (2) and a rear, feed end (4) spaced apart by opposed first and second sides. The basket includes a lower, first, screen deck (8a) and an upper, second, screen deck (8b) directly above the first screen deck. The screening surfaces (13a, 13b) of the screen decks are spaced apart, by a vertical spacing of from 20mm to 250mm. There is a cavity (36) above the feed receiving end (10a) of the first screen deck (8a), in direct fluid communication with the space between the screening surfaces (13a, 13b) of the first and second screen decks (8a, 8b) that only receives feed that has passed through the upper, second, screen deck (8b). The cavity (36) extends to higher than the extreme end (37b) of the screening surface (13b) of the second screen deck (8b), at its feed receiving end (10b).
B07B 1/46 - Constructional details of screens in generalCleaning or heating of screens
B01D 33/03 - Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements
A basket (1) for a shale shaker includes a front, solids discharge end (34) and a rear, feed end (36) spaced apart by opposed first and second sides (2,4). The first and second sides mount a drive mechanism (7). The drive mechanism includes a first eccentrically weighted shaft (12), mounted to the first side (2) of the basket for rotation about an axis transverse to the front to rear direction of the basket; a first shaft drive, coupled to the first shaft (12) and to a corresponding second eccentrically weighted shaft (12a), which is mounted to the second side of the basket (4) for rotation about an axis transverse to the front to rear direction of the basket. A drive module (48, 50) comprising two eccentrically weighted shafts mounted on bearings in a single housing (52) is also described.
B07B 1/42 - Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
B06B 1/16 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
b) of the screening surface of the lowest screen deck define a pond region (15). In use of the method a drill cuttings and drilling mud mixture feed (18) forms a pond of solids and liquid in the pond region that immerses a portion of the screening surface at the feed receiving end of each of the two screen decks. Apparatus for use in the method is also described.
An apparatus for cleaning screen panels includes a washing enclosure (1) including a screen loading zone (8) and a screen washing zone (9) in communication with the screen loading zone (8). The apparatus also includes at least one screen carriage (42) formed and arranged for mounting at least one screen panel (12) thereon and for transporting a said screen panel (12), edge first, into the screen washing zone (9) and reversing to return a said screen panel (12) to the screen loading zone (8). The screen washing zone (9) has screen washing jets (30) mounted for washing both faces of a screen panel (12) mounted on the carriage (42).
A method of manufacturing a filtering screen includes: attaching handle members (3) to edges of at least one wire cloth (1); providing a jig comprising tensioning means (23); placing the at least one wire cloth (1) in the jig and engaging the handle members (3) with handle member engagement portions (15) of the tensioning means (23). The tensioning means (23) are operated to drive the handle members (3) outwardly to tension the wire cloth (1) in orthogonal directions. The method also includes pressing the tensioned wire cloth (1) against a screen frame (6); bonding the wire cloth (1) to the screen frame (6); and trimming the wire cloth.
B23P 15/16 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass plates with holes of very small diameter e.g. for spinning or burner nozzles
B07B 1/46 - Constructional details of screens in generalCleaning or heating of screens
B01D 29/01 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with flat filtering elements
B01D 33/00 - Filters with filtering elements which move during the filtering operation
B07B 1/49 - Stretching devices for screens stretching more than one screen or screen section by the same or different stretching means
B21D 31/02 - Stabbing or piercing, e.g. for making sieves
A method of manufacturing a filtering screen includes: attaching handle members (3) to edges of at least one wire cloth (1); providing a jig comprising tensioning means (23); placing the at least one wire cloth (1) in the jig and engaging the handle members (3) with handle member engagement portions (15) of the tensioning means (23). The tensioning means (23) are operated to drive the handle members (3) outwardly to tension the wire cloth (1) in orthogonal directions. The method also includes pressing the tensioned wire cloth (1) against a screen frame (6); bonding the wire cloth (1) to the screen frame (6); and trimming the wire cloth.
B23P 15/16 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass plates with holes of very small diameter e.g. for spinning or burner nozzles
B07B 1/49 - Stretching devices for screens stretching more than one screen or screen section by the same or different stretching means
B01D 33/00 - Filters with filtering elements which move during the filtering operation
B07B 1/46 - Constructional details of screens in generalCleaning or heating of screens
B01D 29/01 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with flat filtering elements
B21D 31/02 - Stabbing or piercing, e.g. for making sieves
An apparatus (25) for use in screening a liquid and solids mixture feed (2) comprises a conduit (18), including a screening portion (22) that is formed and arranged to divide a liquid and solids mixture feed flowing through the conduit. The feed (2) is divided into a first, cleaned stream (C1) comprising liquid and solid particles of below a selected size limit, and a second, concentrated, stream (24) comprising liquid, and particles above the selected size limit. The apparatus (25) may be a stand alone module, part of a system with other solids and liquids separating equipment or an integral part of a solids and liquid separator such as a shale shaker. Methods of using the apparatus (25) are also described.
B03B 5/62 - Washing granular, powdered or lumpy materialsWet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type
B03B 9/00 - General arrangement of separating plant, e.g. flow sheets
An apparatus (25) for use in screening a liquid and solids mixture feed (2) comprises a conduit (18), including a screening portion (22) that is formed and arranged to divide a liquid and solids mixture feed flowing through the conduit. The feed (2) is divided into a first, cleaned stream (C1) comprising liquid and solid particles of below a selected size limit, and a second, concentrated, stream (24) comprising liquid, and particles above the selected size limit. The apparatus (25) may be a stand alone module, part of a system with other solids and liquids separating equipment or an integral part of a solids and liquid separator such as a shale shaker. Methods of using the apparatus (25) are also described.
A method of manufacturing a filtering screen includes: attaching handle members (3) to edges of at least one wire cloth (1); providing a jig comprising tensioning means (23); placing the at least one wire cloth (1) in the jig and engaging the handle members (3) with handle member engagement portions (15) of the tensioning means (23). The tensioning means (23) are operated to drive the handle members (3) outwardly to tension the wire cloth (1) in orthogonal directions. The method also includes pressing the tensioned wire cloth (1) against a screen frame (6); bonding the wire cloth (1) to the screen frame (6); and trimming the wire cloth.
B23P 15/16 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass plates with holes of very small diameter e.g. for spinning or burner nozzles
The present invention relates to a vibratory screening apparatus which comprises a vibratable screen element (2) mounted in a basket (4), which basket (4) is mounted over a reservoir (6) which contains and holds a pool of liquid slurry (8). A first end (10) of the screen element (2) is disposed within the reservoir (6) such that it is submerged in the body of liquid slurry (8). The reservoir has a deep end (12) in which the first end (10) of the screening element (12) is disposed and a second shallow end (14) above which a median portion (16) of the screening apparatus is disposed. The second end (18) of the screen element (2) is disposed above a portion (20) of the reservoir which extends above the surface of the body of liquid slurry held within the reservoir (6). Vibration means are provided for vibrating the screen element such that oversized solids in the liquid slurry in use of the operation are dewatered on the screen element and are discharged from the second elevated end of the screen element and underside solids pass through the screen element, where they may be collected. A vibratory screening machine is also described.
A method of manufacturing a filtering screen includes: attaching handle 'members (3) to edges of at least one wire cloth (1); providing a jig comprising tensioning means (23); placing the at least one wire cloth (1) in the jig and engaging the handle members (3) with handle member engagement portions (15) of the tensioning means (23). The tensioning means (23) are operated to drive the handle members (3) outwardly to tension the wire cloth (1) in orthogonal directions. The method also includes pressing the tensioned wire cloth (1) against a screen frame (6); bonding the wire cloth (1) to the screen frame (6); and trimming the wire cloth.
The present invention relates to a vibratory screening apparatus which comprises a vibratable screen element (2) mounted in a basket (4), which basket (4) is mounted over a reservoir (6) which contains and holds a pool of liquid slurry (8). A first end (10) of the screen element (2) is disposed within the reservoir (6) such that it is submerged in the body of liquid slurry (8). The reservoir has a deep end (12) in which the first end (10) of the screening element (12) is disposed and a second shallow end (14) above which a median portion (16) of the screening apparatus is disposed. The second end (18) of the screen element (2) is disposed above a portion (20) of the reservoir which extends above the surface of the body of liquid slurry held within the reservoir (6). Vibration means are provided for vibrating the screen element such that oversized solids in the liquid slurry in use of the operation are dewatered on the screen element and are discharged from the second elevated end of the screen element and underside solids pass through the screen element, where they may be collected. A vibratory screening machine is also described.
B01D 33/03 - Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements
B03B 5/04 - Washing granular, powdered or lumpy materialsWet separating using shaken, pulsated or stirred beds as the principal means of separation on shaking tables
B03B 11/00 - Feed or discharge devices integral with washing or wet-separating equipment
The present invention provides a screen system (8) suitable for use in a vibratory screen apparatus (1), and comprising: a screen element (11) and a support frame (12) therefor, as well as novel screen elements (11) and mesh panels (19) therefor, and the use thereof. The screen element (11) consists essentially of a mesh panel (19) provided with first and second elongate support members (22, 23) extending along opposite end portions of the mesh panel (19). The support frame (12) has spaced apart first and second elongate frame elements (13, 14) for engagement with the screen element support members (22, 23) and further elongate frame elements (17, 18) extending there between for supporting the mesh panel (19). The screen element support members (22, 23) and said first and second frame elements (13, 14) are formed and arranged for secure interengagement in use of the screen system, with at least one of said screen element support members and the respective one of said first and second frame elements being formed and arranged so that when clamped together, the mesh panel (19) is securely held under tension against said further frame elements (17, 18).
The present invention provides a vibratory screening apparatus (1) for use in removing solids from a liquid feed, and a basket (4) therefore. The apparatus comprises a static outer housing (2), and a floating basket vibratable by a vibrator device (10). The basket mounts a stack (7) of screen assemblies (8) provided with respective flow directing trays (9) for receiving filtrates from the screen assemblies. A flow distributor (15) divides the feed into at least first and a second feed streams and directs them onto respective screen assemblies, and receives from the flow directing trays, filtrates from respective screen assemblies.
B01D 33/00 - Filters with filtering elements which move during the filtering operation
B01D 35/00 - Filtering devices having features not specifically covered by groups , or for applications not specifically covered by groups Auxiliary devices for filtrationFilter housing constructions
B01D 33/03 - Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements
B07B 1/28 - Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting, or wobbling screens
B07B 1/32 - Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting, or wobbling screens jigging or moving to-and-fro within their own plane transverse to the direction of conveyance
patents
