Vibrating screen

Abstract

The invention discloses a vibrating screen. A cylinder is formed by splicing an upper cylinder body and a lower cylinder body in a sealed mode through a connecting device. The top of the upper cylinder body is covered with a top cover in a sealed mode. The bottom of the lower cylinder body is connected to a base through vibrating springs. A driving device driving the cylinder to vibrate relative to the base is arranged on the cylinder. A screen is fixed in the cylinder in a tensioned mode through a tensioning device. The tensioning device structurally comprises a pressing ring, a pressed ring and a fastener, wherein an annular lug which protrudes downwards is arranged at the bottom of the pressing ring, and an annular groove matched with the annular lug is formed in the top of the pressed ring. The screen is arranged between the pressing ring and the pressed ring. The periphery of the screen is embedded in the annular groove through the annular lug, and the screen is tightly pressed in the annular groove through the fastener, so that the screen is fixed in the tensioned mode. The pressing ring and the pressed ring are fixedly arranged in the cylinder. The vibrating screen has the advantage that the degree of the uniformity of the tensioning force of the screen can be greatly improved, and accordingly the screen is smoothly fixed in the cylinder in the tensioned mode.

Description

technical field [0001] The invention relates to the field of screening equipment, in particular to a vibrating screen for screening material particles. Background technique [0002] The vibrating screen is a kind of screening equipment commonly used in industry, especially in the chemical industry. It uses the vibration generated by the vibration of the vibrator to screen the material particles. When working, the material particles put on the screen are vibrating and sieving by the vibrating screen, the particles smaller than the mesh of the screen pass through the screen, while the particles larger than the mesh of the screen remain on the screen. In the vibrating screen commonly used at present, the screen mesh is tensioned and fixed in the cylinder of the vibrating screen through a clamp and a number of screws. However, if the screen is fixed by clamps and screws, the tension that the screen can withstand is small; in addition, since the screen is fastened to the clamp b...

AI Technical Summary

Problems solved by technology

However, if the screen is fixed by clamps and screws, the tension that the screen can withstand is small; in addition, since the screen is fastened to the clamp by the screws at intervals, the distance between adjacent screws The screen is not fixed and tensioned, and the tension force of the screen that is not fixed and tensioned is quite different from that of the screen that is fixed and tensioned by screws, that is, the tension of the screen is unevenly distributed. It will cause the screen to loosen due to uneven tension distribution during use, resulting in uneven surface of the screen, which will greatly reduce the screening effect of the vibrating screen

In addition, there is inevitably a gap between the clamp and the cylinder. During the screening process, material particles are easy to leak from the gap, which affects the screening effect of the vibrating screen.

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