High-efficiency, steady-flow and uniform distribution device for central drive thickener

Abstract

The invention discloses a high-efficiency steady flow and uniform material distribution device for a central drive concentrator, which comprises a steady flow barrel, a conical feeder and a centrifugal feeder, the bottom of the steady flow barrel is equipped with a conical feeder, the steady flow A centrifugal feeder is installed on the outside of the bucket; in the present invention, through the centrifugal feeder, the outer diameter of the steel pipe increases from small to large, the pressure gradually decreases, and the flow rate decreases. Make a tangential movement along the inner wall of the outer cover of the steady flow barrel, and then slow down again through several baffles installed on the supporting steel plate. The feeder distributes the material evenly and enters the thickening tank, which can effectively reduce the speed and kinetic energy of the pulp and prolong the residence time of the pulp in the thickening tank, so as to achieve the purpose of increasing the underflow concentration of the central drive thickener without affecting the deposition effect.

Description

technical field [0001] The invention relates to the field of industrial slurry processing equipment, in particular to a high-efficiency, steady-flow and uniform material distribution device for a central drive thickener. Background technique [0002] The central drive thickener is mainly suitable for the solid-liquid separation of industrial slurry. It is widely used in metallurgy, mining, coal, chemical, building materials and environmental protection departments for the treatment of ore sludge, waste water and waste residue, as well as water and sewage treatment, etc. Concentration and purification of solid slurry in the industry, that is, it is of great significance to improve the utilization rate of return water, the concentration of underflow transportation, and environmental protection; the thickener uses the material particles in the slurry to naturally Settling is used to complete the concentration, that is, after the slurry enters the thickening tank, the material p...

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Problems solved by technology

[0003] Since the settling velocity of the slurry is calculated based on the settling velocity of the settling zone, the final concentration of the concentrated product is determined by the time the slurry stays in the compression zone, that is, the compression process often occupies most of the time of the entire concentration process. Moreover, the increase in the height of the compression zone will also increase the concentration of the underflow. Therefore, most of the existing thickeners use flocculants to increase the height of the compression zone, thereby increasing the concentration of the underflow. The clear water is polluted, so that the clear water cannot be recycled; in addition, because the traditional thickener does not have a steady flow device or is simply equipped with a water baffle, the slurry will flow directly to the surrounding after entering the thickening tank, which is extremely It is easy to cause it to form a vortex in the thickening tank, thereby stirring up the fine particle materials that have already settled, and then directly affecting the deposition effect of the materials, resulting in low working efficiency of the thickener; in order to solve this problem, the current practice is to increase the corresponding Large concentration tank area, but this will lead to a large structure of the thickener, increase the investment cost, and is not conducive to energy saving and environmental protection

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