Reverse flow type multi-stage sedimentation rake-free thickening device

Patent metadata

Field	Value
Publication number	US-10994228-B2
Application number	US-202017030424-A
Country	US
Kind code	B2
Filing date	Sep 24, 2020
Priority date	Dec 13, 2019
Publication date	May 4, 2021
Grant date	May 4, 2021

Abstract

Disclosed is a reverse flow multi-stage sedimentation rake-free thickening device relating to the field of slime water treatment. The device includes a feed assembly, a guide assembly, and a clean coal collection assembly. The guide assembly also includes a central tank body and coal slurry flows from the upper part of the central tank body to the inner side wall of the central tank body through the feed assembly and the medicament, and then flows to the middle of the central tank body through the guide assembly. After the reaction, the bubbles carry the fine coal slime and move up to the clean coal collection assembly. The clean coal collection assembly is located above the outlet of the guide assembly, and the clean coal collection assembly is sequentially provided with a central collection area, a defoaming area, and a diversion settlement area from the middle to the outside.

First claim

What is claimed is:

1. A reverse flow type multi-stage sedimentation rake-free thickening device, comprising a feed assembly, a guide assembly, and a clean coal collection assembly; wherein the guide assembly further comprises a central tank; slime water flows from an upper part of a central tank body to an inner side wall of the central tank body through the feed assembly and a reagent, and then flows to the middle of the central tank body through a guide assembly; the clean coal collection assembly collects floating residual mineralized bubbles and a fine coal slime that moves upward into the clean coal collection assembly; the clean coal collection assembly is provided above an outlet of the guide assembly and the clean coal collection assembly is sequentially provided with a central aggregate area, a bubbles defoaming area, and a diversion and settlement area from the middle to an outside;
the bubbles defoaming area comprises a first diversion sedimentation screen and a defoamer located at a pre-set position above the first diversion sedimentation screen; the defoamer includes a hammering unit and a driving unit; the hammering unit includes a hammering defoaming plate, a clean coal collecting tank and a hammering rod; the hammering defoaming plate is hinged on one end of the hammering rod; the first diversion sedimentation screen is fixed with a supporting unit; the other end of the hammering rod is hinged on the supporting unit; a clean coal collecting trough is fixed on a side plate of the first diversion sedimentation screen; one end of the driving unit is fixed on the supporting unit, and the other end is connected with the middle of the hammer rod.

2. The reverse flow multi-stage sedimentation rake-free thickening device of claim 1 , wherein the first diversion sedimentation screen comprises a first diversion area surrounded by side plates on both sides and a lower plate body; the lower plate body and a first underflow discharge pipe below the lower plate body are connected through a first discharge valve; and a high board and a low board are alternately provided between the side plates on both sides.

3. The reverse flow type multi-stage sedimentation rake-free thickening device of claim 2 , wherein the opposite surface of the high board and the low board is provided with a protruding expansion spoiler.

4. The reverse flow type multi-stage sedimentation rake-free thickening device of claim 1 , wherein the feed assembly includes a feed distribution tank, a main feed pipe, and a reducing pipe; a plurality of reducing pipes are evenly distributed between the feed distribution tank and a side wall of the central tank body; and at least one reagent ejector is also provided at a protrusion of the reducing pipe; a magnetic sprayer includes a first magnetism-concentrating ejection tube, a first magnetic powder feeding pipe and a first distributor; an upper end of the magnetism-concentrating ejection tube communicates with the feed distribution tank in the feed assembly, and a lower end is communicated with a first distributor; one end of the first magnetic powder feed pipe is communicated with the pipe at a magnetic powder supply and the other end of the first magnetic powder feed pipe is communicated with the first magnetization ejection pipe.

Assignees

• Univ Anhui Sci & Technology

Inventors

• Wang Chao
• Zhao Erning
• Hu Biao
• Qiu Chengliang
• Wang Mengmeng
• Jiang Xueqing
• Xiao Xiong
• Liu Xinchun
• Feng Yang
• Zhou Jiaqiang
• Zhang Jin
• Zhang Yu

Classifications

• C02F1/20

  by degassing, i.e. liberation of dissolved gases (degasification of liquids in general B01D19/00; arrangement of degassing apparatus in boiler feed supply F22D) · CPC title

• B01D19/02

  Foam dispersion or prevention (during boiling B01B1/02; during fermentation C12) · CPC title

• C02F2001/007

  Processes including a sedimentation step · CPC title

• B01D21/01

  using flocculating agents (for purifying water C02F1/52; for liquid radioactive waste G21F9/10) · CPC title

• C02F1/5281

  Installations for water purification using chemical agents · CPC title