Vibratory screening machine with tiltable screen frame and adjustable discharge weir
AssigneeDerrick Manufacturing Corporation
InventorsWilliam W. Derrick, Robert G. Derrick
Life of this patent
Estimating the term…
Abstract
A vibratory screening machine having a main frame, a screen frame pivoted at substantially its midpoint on the main frame, a weir which receives a liquid-solid mixture to be screened, a discharge spout on the weir, a linkage interconnecting one end of the screen frame with the discharge spout, and a hand wheel effectively connected to the discharge spout to raise and lower it and thereby simultaneously adjust the inclination of the screen frame while maintaining the drop of the liquid-solid mixture being discharged onto the screen frame substantially constant in all inclined positions of the screen frame.
Claims23
A vibratory screening machine comprising a main frame, a screen frame, mounting means mounting said screen frame on said main frame, a screen on said screen frame, means for vibrating said screen frame, a weir fixedly mounted directly on said main frame for containing a liquid-solid mixture, discharge means on said weir for discharging said liquid-solid mixture onto said screen, and adjusting means for adjusting the inclination of said screen relative to said main frame and for adjusting the elevation of said discharge means relative to said weir to thereby maintain the position of said discharge means in substantially the same relative position to said screen in adjusted positions thereof.
A vibratory screening machine comprising a main frame, a screen frame, mounting means mounting said screen frame on said main frame, a screen on said screen frame, means for vibrating said screen frame, a source of a liquid-solid mixture mounted directly on said main frame, discharge means mounted on said source of liquid-solid mixture including a portion closest to said screen locatable at a predetermined elevation above said screen for discharging said liquid-solid mixture onto said screen, first adjusting means for adjusting the inclination of said screen frame relative to said main frame, and second adjusting means for adjusting the elevation of said discharge means including said portion closest to said screen relative to said source of liquid-solid mixture for maintaining the position of said portion closest to said screen in substantially the same relative position to said screen frame in adjusted positions of said screen frame.
A vibratory screening machine comprising a main frame, a screen frame, first mounting means mounting said screen frame on said main frame, a screen, second mounting means for mounting said screen on said screen frame, means for vibrating said screen frame, a source of a liquid-solid mixture, mounted directly on said main frame, discharge means for discharging said liquid-solid mixture onto said screen, adjusting means for adjusting the inclination of said screen relative to said main frame and for maintaining the position of said discharge means in substantially the same relative position to said screen in adjusted positions thereof, said first mounting means comprising means for permitting pivotal movement between said main frame and said screen frame, said discharge means comprising a weir, said means for maintaining said discharge means in substantially the same relative position to said screen comprising link means for effectively interconnecting said discharge means to said screen, and said weir including a weir gate for regulating the height at which said liquid flows from said weir.
A vibratory screening machine comprising a main frame, a screen frame, first mounting means mounting said screen frame on said main frame, a screen, second mounting means for mounting said screen on said screen frame, means for vibrating said screen frame, a source of a liquid-solid mixture, mounted directly on said main frame, discharge means for discharging said liquid-solid mixture onto said screen, adjusting means for adjusting the inclination of said screen relative to said main frame and for maintaining the position of said discharge means in substantially the same relative position to said screen in adjusted positions thereof, said first mounting means comprising means for permitting pivotal movement between said main frame and said screen frame, said discharge means comprising a weir, said means for maintaining said discharge means in substantially the same relative position to said screen comprising link means for effectively interconnecting said discharge means to said screen, means for locking said discharge means in adjusted positions thereof comprising pin and slot means effectively interposed between said main frame and said screen frame, and locking means for locking said pin and slot means in said adjusted positions.
A vibratory screening machine comprising a main frame, a screen frame, first mounting means mounting said screen frame on said main frame, a screen, second mounting means for mounting said screen on said screen frame, means for vibrating said screen frame, a source of a liquid-solid mixture, mounted directly on said main frame, discharge means for discharging said liquid-solid mixture onto said screen, adjusting means for adjusting the inclination of said screen relative to said main frame and for maintaining the position of said discharge means in substantially the same relative position to said screen in adjusted positions thereof, said first mounting means comprising means for permitting pivotal movement between said main frame and said screen frame, said discharge means comprising a weir, said means for maintaining said discharge means in substantially the same relative position to said screen comprising link means for effectively interconnecting said discharge means to said screen, said weir including a weir gate, said link means comprising elongated link means having opposite ends, and pivotal connections at opposite ends of said elongated link means for effectively connecting said weir gate to said screen.
A vibratory screening machine comprising a main frame, a screen frame, first mounting means mounting said screen frame on said main frame, a screen, second mounting means for mounting said screen on said screen frame, means for vibrating said screen frame, a source of a liquid-solid mixture, mounted directly on said main frame discharge means for discharging said liquid-solid mixture onto said screen, adjusting means for adjusting the inclination of said screen relative to said main frame and for maintaining the position of said discharge means in substantially the same relative position to said screen in adjusted positions thereof, said first mounting means comprising means for permitting pivotal movement between said main frame and said screen frame, said adjusting means comprising first means for raising and lowering said discharge means, and second means effectively coupling said discharge means to said screen.
A vibratory screening machine comprising a main frame, a screen frame, mounting means mounting said screen frame on said main frame, a screen on said screen frame, means for vibrating said screen frame, a source of a liquid-solid mixture mounted directly on said main frame, discharge means on said source of liquid-solid mixture including a portion closest to said screen located above said screen for discharging said liquid-solid mixture onto said screen, first adjusting means for adjusting the inclination of said screen frame relative to said main frame, and second adjusting means for adjusting the elevation of said discharge means including said portion closest to said screen relative to said source of liquid-solid mixture to cause it to be in desired positions relative to said screen frame in various adjusted positioned of said screen frame.
A vibratory screening machine comprising a main frame, a screen frame, first means mounting said screen frame on said main frame, a screen, second means mounting said screen on said screen frame, means for vibrating said screen frame, a weir for providing a source of liquid-solid mixture, means mounting said weir on said main frame, discharge means on said weir for discharging said liquid-solid mixture onto said screen, and single means for simultaneously adjusting the elevation of said discharge means relative to said weir and the inclination of said screen frame relative to said main frame.
A vibratory screening machine comprising a main frame, a screen frame, first mounting means mounting said screen frame on said main frame, a screen, second mounting means for mounting said screen on said screen frame, means for vibrating said screen frame, a weir for providing a liquid-solid mixture, third mounting means mounting said weir on said main frame independently of said first and second mounting means, discharge means on said weir for discharging said liquid-solid mixture from said weir onto said screen, said discharge means including a portion closest to said screen from which said liquid-solid mixture is discharged, first adjusting means for adjusting the inclination of said screen frame on said main frame, and second adjusting means for adjusting the elevation of said discharge means relative to said weir including said portion closest to said screen from which said liquid-solid mixture is discharged.
A vibratory screening machine comprising a main frame, a screen frame, first mounting means mounting said screen frame on said main frame, a screen, second mounting means for mounting said screen on said screen frame, means for vibrating said screen frame, a weir for providing a liquid-solid mixture, third mounting means mounting said weir on said main frame, discharge means on said weir for discharging said liquid-solid mixture from said weir onto said screen, and adjusting means for adjusting the inclination of said screen frame on said main frame and adjusting the elevation of said discharge means relative to said weir, said first mounting means including means between said screen frame and said main frame for enabling said screen to be inclined both upwardly and downwardly relative to said discharge means.
Dependencies are inferred from the claim text.