Liquid blocking device of rotary drum vacuum filter

Abstract

The invention discloses a novel liquid blocking device of a rotary drum vacuum filter, which comprises a liquid blocking plate (1), a rotary drum (13) and a slurry filter tank wall (12), wherein one side of the liquid blocking plate (1) is articulated with the slurry filter tank wall (12), and another side is close to a filter medium (11) on the rotary drum (13); the liquid blocking plate (1) is also provided with a connecting device, one end of the connecting device is articulated with the liquid blocking plate (1), and the other end is connected with a support (5) fixed on the slurry filter tank wall (12). The liquid blocking device can be used for effectively blocking filter slurry from spattering out of a slurry filter tank, and a high liquid level in the slurry filter tank can be maintained, so that the yield and the quality of a product are ensured, the spattering loss of the filter slurry is avoided, and corrosion to peripheral equipment is reduced; and the stable liquid level in the slurry filter tank also reduces the adjustment work amount of an operator and benefits replacing the filter medium.

Description

technical field [0001] The invention relates to a rotary drum vacuum filter, in particular to a liquid retaining device of the rotary drum vacuum filter. Background technique [0002] The working principle of drum vacuum filter is: the rotating drum laying the filter medium is submerged in the filter slurry tank with a certain liquid level, and the filter slurry in the tank is extracted by the drum with vacuum as the filtering power, thereby forming a filter cake on the surface of the filter medium. Due to the influence of the agitator, the blowing of the cleaning filter, the impact of the incoming and outgoing materials, the filtered slurry in the tank will inevitably lead to sharp fluctuations in the filtered slurry in the tank, and the filtered slurry is easily splashed out at the open position at the front of the material tank, resulting in " splash phenomenon". Slurry splashing on the unloaded filter cake will increase the water content of the filter cake. Slurry splas...

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Problems solved by technology

However, in the long-term operation of the equipment, it was found that in order to replace the filter medium, the above-mentioned liquid baffle plate must maintain a sufficient gap with the outer circle of the drum, so the ejection of the filter slurry in the filter slurry tank cannot be effectively prevented, and the use effect is very poor, thereby reducing The liquid level of the filter slurry in the tank directly affects the output and quality of the filter, and sometimes even due to the uneven thickness of the filter cake attached to the filter medium, "burst" and accumulation phenomenon occur, resulting in vacuum leakage of the drum, and the filter cannot operate normally

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