A single layer coal banana screen system developed by our company for coal preparation, which comprises a single layer banana screen and a screening aggregate device. The single layer banana screen comprises four support seats fixed to the mounting base, a buffer spring mounted on the support seat and a screen box: The side plate of the screen box is supported by the buffer spring; The front screen plate section at the bottom of the screen box is divided into a demediating screen plate section. The demediating screen plate is installed in the demediating screen plate section, which plays a dehydrating and demediating role for coal. The screen plate section at the back of the screen box is the grading screen plate section, and the grading screen plate can optionally be installed with the deintermediating screen plate or the grading screen plate, which plays the role of dehydrating or deintermediating coal. The screen box is connected with the drive exciter unit; The single layer banana screen system can be used for both descaling and grading of coal.
1. The single-layer banana screen system for coal preparation is characterized in that the single-layer banana screen system for coal preparation consists of a single-layer banana screen and an aggregate device under the screen. The single-layer banana screen comprises a support seat, the support seat has four, and the support seat is fixed connected with the installation base; The buffer spring is installed on the support base; The side plate of the screen box is supported by the buffer spring; The front screen plate section of the bottom of the screen box is divided into a disintermediating screen plate section, and the disintermediating screen plate is installed in the disintermediating screen plate section, which plays a dewatering and disintermediating role on coal; The rear screen plate segment is a grading screen plate segment, and the grading screen plate segment can optionally be installed with a descaling screen plate or a grading screen plate to play a dewatering descaling or dewatering descaling role on coal: drive the exciter unit, and the driving exciter unit is connected with the screening box;
2. The aggregate device under the screen comprises a qualified medium funnel, a dilute medium funnel and a sieve chute. The qualified medium funnel and the dilute medium funnel are arranged under the disconnecting screen plate segment, and the dilute medium funnel is arranged behind the qualified medium funnel; The screen chute is arranged at the bottom of the grading screen plate segment, the screen chute on the front side of the upper section is provided with a through mouth and the thin media funnel through the back end, the screen chute upper section is provided with a flip plate, the flip plate and the screen chute wall can be rotated connected; The flip plate can be turned forward to block the through port and block the communication with the dilute medium funnel, and the flip plate can be turned backward to close the underscreen chute. A single layer coal banana screen system for coal preparation is characterized in that the split chute is arranged after the screen of the single layer banana screen, and the upper mouth of the split chute is connected with the top discharge port of the screen of the single layer banana screen. Two discharge ports are arranged under the bifurcated chute, and the two discharge ports are connected with two downstream equipment; The inside of the fork chute is provided with a turning transfer material plate at the fork, the turning transfer material plate is rotatively connected with the side wall of the fork chute, and the turning transfer material plate blocks the passage of the material and the two discharge ports respectively at two limit positions.
3. A single-layer banana screen system for coal preparation with front section stripping and rear section grading is characterized in that a flip plate operating device is provided outside the chute under the screen, and the flip plate operating device is connected with a rotating shaft of the flip plate and drives the flip plate. A single-layer screening system for coal preparation is characterized in that a guide plate operating device is arranged outside the bifurcated chute, and the guide plate operating device is connected with a rotating shaft of the turning transfer plate and drives the turning transfer plate to turn over.
(4) A single layer coal banana screen system for the front section disconnecting and the back section grading for coal preparation is characterized in that the flip plate operating device is a hydraulic cylinder or an electro-hydraulic push rod or an electric push rod or a cylinder or a manually operated push rod device. A single layer banana screen system for stripping the front section and classifying the back section for coal preparation is characterized in that the guide plate operating device is a hydraulic cylinder or an electro-hydraulic push rod or an electric push rod or a cylinder or a manually operated push rod device. The single layer banana screen system used for coal preparation is characterized in that the screen plate of the screen box is divided into five sections from the feeding end to the discharging end, and the inclination of the screen plate of the five sections becomes smaller in turn, and the Angle difference is 4°; The inclination Angle of the screen plate from the feeding end to the discharging end is successively 25° Angle, 21° Angle, 17° Angle, 13° Angle, 9° Angle, 5° Angle, decreasing segment by segment.
