Multi-grade screening machine capable of automatically feeding

Abstract

The invention discloses a multi-grade screening machine capable of automatically feeding. The multi-grade screening machine comprises a feeding cylinder, a multi-grade screening box and a vibration exciter. A feeding screw conveyer is arranged in the feeding cylinder, a casting hopper is arranged on the lower side of the feeding cylinder, a bearing seat is arranged on the lower side of the castinghopper, and a feeding cylinder base is arranged on the lower side of the bearing seat. A feeding screw conveyer driving shaft is arranged in the middle of the upper side of the feeding cylinder, anda feeding screw conveyer driving wheel is arranged at the upper end of the feeding screw conveyer driving shaft. The feeding cylinder is arranged at a feeding port, raw materials are conveyed evenly from the lower end of the feeding cylinder to the upper end through the feeding screw conveyer in the interior, thus the conveying efficiency of the materials is improved. A screening box cover plate is arranged so that smoke and dust in a box body can be prevented from drifting in the vibration process of a screening plate in the multi-grade screening box, thus the mechanical accuracy of the equipment cannot be influenced. Supporting columns sleeved with springs are arranged on the lower side of the multi-grade screening box, operation noises generated by vibration can be reduced, and the rotation accuracy of the equipment is ensured.

Description

technical field [0001] The invention belongs to the technical field of construction machinery, and in particular relates to a multi-stage screening machine for automatic feeding. Background technique [0002] The screening machine is mainly composed of a screen box, a screen, a vibrator, a damping spring device, and a chassis. A cylinder-type eccentric shaft exciter and an eccentric block are used to adjust the amplitude. The vibrator is installed on the side plate of the screen box, and is driven by a motor to rotate through a V-belt to generate centrifugal inertial force, forcing the screen box to vibrate. The side plate of the screen machine is made of high-quality steel plate, and the side plate is connected with the beam and the base of the exciter by high-strength bolts or ring groove rivets. The vibrator is installed on the side plate of the screen box, and is driven to rotate by the motor through the coupling to generate centrifugal inertial force, forcing the scree...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-stage screening machine for automatic feeding, to solve the problem that the original screening machine proposed in the above background technology puts materials into the screen box through a higher feeding port, and then passes through the vibration of the screen plate. , use the higher potential energy of the material to classify the size of the material in the process of gradual decline, but because the feeding port is higher, the material input labor is larger, the efficiency of the screening operation is reduced, and the direction of the discharge port is designed closer , it is inconvenient to collect the screened materials, and can only be collected through containers with small capacity, which reduces the efficiency of material collection

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