Green energy-saving dissolved air flotation machine

Abstract

A green and energy-saving dissolved air flotation machine comprises a rack, a slag discharge channel and an air flotation tank, a chain scraper for scraping floating flocculate is arranged above the air flotation tank, each row of scrapers of the scraper is divided into four blocks, the length direction of each small scraper is perpendicular to the liquid level when the small scrapers enter the air flotation tank, and the small scrapers are perpendicular to the liquid level when the small scrapers enter the air flotation tank from the tank to the tank. The scraper blade gradually rotates to the horizontal position from the vertical position, and in addition, the scraper machine is further provided with a symmetrical rotating mechanism, a rack guide mechanism and a self-adaptive cam strip mechanism. The self-adaptive chain wheel shaft mechanism can sense the counter-acting force of a flocculation layer borne by the chain scraper, and then the cam strip is driven to move, so that the angle of the scraper adapts to the flowability and hardness of the flocculation layer. The energy consumption of the air flotation machine is reduced. Moreover, the flowability and hardness of the flocculation layer are automatically sensed, so that the conditions of blocking a slag discharge pipeline and damaging a chain scraper are reduced, the working efficiency of the air flotation machine is further improved, and the energy consumption cost is reduced.

Description

technical field [0001] The invention relates to a solid-liquid separation device, in particular to a green energy-saving dissolved air flotation machine. Background technique [0002] As a kind of solid-liquid separation equipment, the dissolved air flotation machine is usually equipped with an air flotation tank. On the surface of the air flotation tank, the flocculent material is entrained by small air bubbles and rises to form a floc layer. The floc layer is cleaned out of the air flotation tank by a chain scraper, and then passed Pipes are piped away, which separates the substances in the liquid. [0003] Conventional air flotation machines such as figure 1 As shown, when the scraper of the chain scraper machine cuts into the flocculation tank every time, the length direction of the scraper is parallel to the liquid surface, and all the force is exerted on the length direction of the scraper. This scraper method is effective for long-term and stable air flotation pools...

AI Technical Summary

Problems solved by technology

Once the air flotation machine enters the maintenance mode or the ambient temperature is low, the fluidity of the flocculation layer on the surface of the air flotation tank will become poor, and sometimes even solidified. In this way, the scraper will In the middle, the entire length of the scraper will receive greater resistance from the floc layer, and the entire scraper conveyor will receive greater resistance, requiring greater power and power consumption to remove the solidified floc layer

In addition, under the action of the horizontal scraper, the flocculation layer with poor fluidity will usually enter the slag discharge channel in a large block shape, which will often cause resistance to the slag discharge system and require more manpower and material resources to remove , energy-consuming and time-consuming

[0004] In view of the above problems, it is necessary to design a green energy-saving dissolved air flotation machine that can address the poor fluidity of the floc layer

Images