CN110052062B

CN110052062B - Thickener

Info

Publication number: CN110052062B
Application number: CN201910463445.6A
Authority: CN
Inventors: 包士雷; 庄磊
Original assignee: Northern Engineering and Technology Corp MCC
Current assignee: Northern Engineering and Technology Corp MCC
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2024-03-08
Anticipated expiration: 2039-05-30
Also published as: CN110052062A

Abstract

The invention belongs to the technical field of material dehydration, and particularly relates to a thickener, which is characterized by comprising a main tank body, a central cylinder arranged in the center of the main tank body, a receiving tank rotationally connected with the central cylinder, a feeding pipe I with the tail part connected with the upper part of the receiving tank, a feeding pipe II with the head part connected with the bottom of the receiving tank, a working bridge rotationally connected with the central cylinder, a transmission device connected with the working bridge, a scraper connected with the working bridge, an overflow pipe arranged in the central cylinder, an underflow tank arranged in the central cylinder and extending downwards to the outside of the main tank body, and four portal holes arranged along the outer circumference of the bottom of the central cylinder, wherein the four portal holes are communicated with the underflow tank. The thickener provided by the invention has a simple structure and reasonable design, can realize the functions of settling coarse-grain minerals in a shallow groove area and settling fine-grain minerals in a deep groove area, and can realize intermittent ore feeding in the same area, so that the influence of continuous ore pulp flow on the settling effect is avoided.

Description

Thickener

Technical Field

The invention belongs to the technical field of material dehydration, and particularly relates to a thickener.

Background

The thickener is solid-liquid separation equipment based on gravity sedimentation, and generally adopts concrete, wood or metal welding plates as structural materials to build a cylindrical shallow groove with a cone bottom. The ore pulp with the solid weight of 10-20% can be concentrated into the underflow ore pulp with the solid content of 45-55% by gravity sedimentation, and the thickened underflow ore pulp is discharged from a bottom flow port at the bottom of the thickener under the action of a rake which is arranged in the thickener and runs slowly. The upper part of the thickener produces cleaner clarified liquid (overflow) which is discharged from the annular chute at the top. If the content of coarse fraction minerals in ore pulp is more, materials are quickly settled in the central area of a thickener, a pressing harrow phenomenon is easy to generate, and the concentration of underflow is lower in a shallow groove area due to insufficient settlement height, so that the phenomenon has adverse effects on production.

Disclosure of Invention

The invention aims to provide a thickener capable of settling coarse-grained minerals in a shallow tank area and settling fine-grained minerals in a deep tank area.

The aim of the invention is realized by the following technical scheme:

the thickener of the invention is characterized by comprising a main tank body, a central cylinder arranged at the center of the main tank body, a receiving tank arranged at the top of the central cylinder and rotationally connected with the central cylinder through a rotary table, a feeding pipe I with the tail part connected with the upper part of the receiving tank, a feeding pipe II with the head part connected with the bottom of the receiving tank, a working bridge arranged at the upper part of the central cylinder and rotationally connected with the central cylinder, a transmission device connected with the working bridge, a scraper connected with the working bridge through a rake frame, an overflow pipe arranged in the central cylinder, an underflow tank arranged in the central cylinder and downwardly extending to the outside of the main tank body, four portal holes arranged along the outer circumference of the bottom of the central cylinder and communicated with the underflow tank, wherein the bottom of the overflow pipe passes through the underflow tank,

the ore feeding pipe II is supported by the working bridge, an inclined pipe is welded at the tail of the ore feeding pipe II, the length of the inclined pipe, which is at the radial distance from the main groove body to the cofferdam, is 0.9m-1.1m, and the inclined pipe is lower than the upper surface of the cofferdam by 0.9m-1.1m in the vertical direction.

The rotary table comprises a bearing seat fixed on the central cylinder, a bearing arranged on the bearing seat, and the material receiving groove connected with the bearing.

The ore feeding pipe I and the ore feeding pipe II are obliquely arranged according to the gravity gradient of ore pulp.

The bottom surface of the scraping plate is parallel to the bus of the main groove body, and a gap of 95-105 mm is reserved.

The upper part of the bottom launder is of a funnel structure, a wide opening of the funnel is tangent to the central cylinder, and the elevation of the tangent line is lower than 1.4m-1.6m of the cofferdam.

The invention has the advantages that:

the thickener provided by the invention has a simple structure and reasonable design, can realize the functions of settling coarse-grain minerals in a shallow groove area and settling fine-grain minerals in a deep groove area, and can realize intermittent ore feeding in the same area, so that the influence of continuous ore pulp flow on the settling effect is avoided.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a top view of fig. 1 of the present invention.

Detailed Description

Specific embodiments of the present invention are further described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the thickener of the present invention is characterized by comprising a main tank body 1, a central cylinder 7 arranged at the center of the main tank body 1, a receiving tank 5 arranged at the top of the central cylinder 7 and rotationally connected with the central cylinder 7 through a rotary table 6, a feeding pipe i 10 with the tail connected with the upper part of the receiving tank 5, a feeding pipe ii 11 with the head connected with the bottom of the receiving tank 5, a working bridge 2 arranged at the upper part of the central cylinder 7 and rotationally connected with the central cylinder 7, a transmission device 4 connected with the working bridge 2, a scraper 3 connected with the working bridge 2 through a rake frame, an overflow pipe 8 arranged inside the central cylinder 7, four gate-shaped holes arranged along the outer circumference of the bottom of the central cylinder 7 and communicated with the underflow tank 9, an overflow pipe 8 passing through the underflow tank 9 and leaving a connecting pipe flange,

the ore feeding pipe II 11 is supported by the working bridge 2, and an inclined pipe is welded at the tail of the ore feeding pipe II 11, the length of the inclined pipe, which is positioned at the radial distance of the main groove body 1, from the cofferdam is 0.9m to 1.1m, and the inclined pipe is lower than the upper surface of the cofferdam by 0.9m to 1.1m in the vertical direction. The ore feeding pipe I10 and the ore feeding pipe II 11 are obliquely arranged according to the gravity gradient of ore pulp, the tail part of the ore feeding pipe I10 is inserted into the upper part of the receiving groove 5, and the high point of the ore feeding pipe II 11 is connected with the bottom of the receiving groove 5.

The rotary table 6 comprises a bearing seat fixed on the central cylinder 7, a bearing arranged on the bearing seat, and the material receiving groove 5 is connected with the bearing.

The bottom surface of the scraping plate 3 is parallel to the bus of the main groove body 1, and a gap of 95mm-105mm is reserved.

The upper part of the underflow groove 9 is of a funnel structure, a wide opening of the funnel is tangent to the central cylinder 7, the elevation of the tangent is lower than 1.4m-1.6m of the cofferdam, a narrow opening of the funnel is connected with a pipeline,

when the invention is applied, ore pulp is fed into the receiving groove 5 through the ore feeding pipe I10, the driving device 4 drives the working bridge 2 to rotate, the receiving groove 5 rotates together with the ore feeding pipe II 11, materials are fed into the main groove body 1 along the circumferential direction through the ore feeding pipe II 11, ore pulp heavy and coarse fraction minerals are deposited in the shallow groove circumferential area of the main groove body 1, fine fraction minerals are deposited in the deep groove, clarified water overflows from a gate-shaped hole of the central cylinder 7 to the underflow groove 9 to be discharged, and the scraping plate 3 rakes the underflow into the underflow groove 9 and conveys the underflow to a designated position through a pump. The invention has simple structure, realizes that coarse-grain minerals are precipitated in the shallow groove area and fine-grain minerals are precipitated in the deep groove area of the thickener, and along with the rotation of the working bridge 2, the feeding pipe II 11 continuously feeds materials into the circumference area of the shallow part of the main groove body 1, and the same area intermittently feeds ores, thereby being beneficial to clarification of ore pulp.

Claims

1. The thickener is characterized by comprising a main tank body, a central cylinder arranged at the center of the main tank body, a receiving tank arranged at the top of the central cylinder and rotationally connected with the central cylinder through a rotary table, a feeding pipe I with the tail part connected with the upper part of the receiving tank, a feeding pipe II with the head part connected with the bottom of the receiving tank, a working bridge arranged at the upper part of the central cylinder and rotationally connected with the central cylinder, a transmission device connected with the working bridge, a scraper connected with the working bridge through a rake frame, an overflow pipe arranged in the central cylinder, an underflow tank arranged in the central cylinder and downwardly extending to the outside of the main tank body, four portal holes arranged along the outer circumference of the bottom of the central cylinder, wherein the four portal holes are communicated with the underflow tank, the bottom of the overflow pipe passes through the underflow tank,

2. The thickener of claim 1, wherein the rotary table comprises a bearing seat fixed on the central cylinder, a bearing arranged on the bearing seat, and the material receiving groove is connected with the bearing.

3. The thickener of claim 1, wherein the feeding pipe I and the feeding pipe II are arranged obliquely according to the gravity gradient of the ore pulp.

4. The thickener of claim 1, wherein the bottom surface of the scraper is parallel to the bus bar of the main tank body and has a gap of 95mm-105 mm.

5. The thickener of claim 1, wherein the upper part of the bottom launder is of a funnel structure, a wide opening of the funnel is tangent to the central cylinder, and the elevation of the tangent line is lower than 1.4m-1.6m of the cofferdam.