CN2822803Y

CN2822803Y - Powder selecting machine for coarse grain

Info

Publication number: CN2822803Y
Application number: CN 200520051953
Authority: CN
Inventors: 夏纪勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-19
Filing date: 2005-09-19
Publication date: 2006-10-04
Anticipated expiration: 2015-09-19

Abstract

The utility model discloses a powder selecting machine for coarse grains, which is a vertical structure and comprises a bearing seat, a feed inlet, a driving wheel, a main shaft, a discharging cone, a distributing disk, an inner casing body, an outer casing body, a feed inlet, a coarse powder outlet and a fine powder outlet. The utility model is characterized in that the bearing seat, the feed inlets, the discharging cone are arranged on an upper machine cover; the driving wheel, the main shaft and the distributing disk form a rotatable rotor component, and the main shaft is arranged on the bearing seat by a bearing; the outer casing body is composed of an upper outer casing body and a lower outer casing body, a machine seat is arranged outside the outer casing body, and the fine powder outlet is positioned on the lower part of the lower outer casing body; the inner casing body is arranged in a cavity in the machine formed by the outer casing body, the upper part of the inner casing body is provided with an opening which gas and fine powder can pass through, the middle part is provided with an air inlet pipe passing in from the outer casing body and the lower part is provided with the coarse powder outlet. Compared with a dry screening machine, the utility model can be used for grading materials of coarse grains with particle sizes of 0.175 mm-3 mm, besides, the utility model has large processing ability and no the problem of frequent replacement of a screen mesh.

Description

A kind of coarse particle separator

Technical field

The utility model relates to a kind of granular material dry separation device, especially relates to a kind of coarse granule granular material dry separation device that is applied to industries such as nonmetallic ore, new material.

Background technology

Dry method powder concentrator commonly used mainly contains centrifugal, cyclone type, rotator type etc. in the industry, its common feature is to utilize wind-force that material is blown from bottom to top, when material is blown to classification rotor that plays the fence effect or little fan blade, thicker material makes downward power fall into the meal district greater than the strength that makes progress owing to effects such as being subjected to gravity, centrifugal force, and fine powder then continues upwards to enter the fine powder district.These powder concentrators are owing to regulate the finished product powder fineness by the rotating speed that changes little fan blade quantity and classifying turbine, must there be bigger classification height could carry out separation thick, fine powder, if particle separation diameter is big, because increasing along with particle diameter, the increase of gravity is much larger than the increase of wind-force, so the air-flow that makes progress will promote thick material big height to the classification rotor or the little fan blade that play grading, just be difficult to technically realize, so these powder concentrators only are suitable for carrying out the classification of thin (as-80 orders, promptly particle diameter is less than 0.175mm) material.

The general classification of suitable+3mm material of various dry screening machines is not suitable for thinner material.The high frequency of some small dimension sieves, revolves the sieve that shakes can sift out thinner powder, but the saturating compass screen surface of these dry screening machines is little, and screening efficiency is low, and disposal ability is little, and screen life-span is short.

The utility model content

The purpose of this utility model is to provide a kind of efficient height, and disposal ability is big, and long service life is applicable to the dry method powder concentrator of the coarse granule material classification that particle separation diameter is bigger.

The purpose of this utility model is achieved through the following technical solutions.It is a vertical structure, comprise upper-cover, bearing block, drive, main shaft, blanking awl, spreading disk, blast pipe, inner housing, shell body, charging aperture, meal outlet, fine powder outlet, it is characterized in that: described bearing block, charging aperture, blanking awl are installed on upper-cover; Described drive, main shaft, spreading disk constitute rotary rotor part, and described main shaft is installed on the bearing block by bearing; Described shell body constitutes shell body integral body by last shell body, lower casing body two parts, and support is used for the installation of machine in the outside of shell body; Described fine powder outlet is positioned at lower casing body bottom; The machine inner chamber that described inner housing places shell body to constitute, its top are provided with the opening that allows gas and fine powder to pass through, and the middle part is equipped with the blast pipe that penetrates from shell body, and the meal outlet is established in the bottom.During work, wind (air-flow) enters the machine center cavity that inner housing constitutes by blast pipe from the middle part, rotor part rotates by its drive and the drive unit connection that can regulate rotating speed, material enters the back from charging aperture and drops on the spreading disk by the blanking awl, spread the graded region of the machine center cavity that constitutes to inner housing by spreading disk, thick material is dominated owing to gravity accounts for, outside the meal outlet discharge machine of inner housing bottom, fine powder is then driven by air-flow and rises, opening by inner housing top enters in the space between inner housing and the shell body, discharges from the fine powder outlet of lower casing body bottom.Particle separation diameter can be adjusted by air quantity, the rotor structure that spreading disk is installed and/or rotor speed.

Shell body is common tubular structure on the above, also can be the fines collection whirlwind bucket of similar existing cyclone type powder sorting machine, promptly substitute shell body on the described common tubular with one or more whirlwind tube, be concentrated to by the fine powder after the collection of whirlwind tube outside the fine powder outlet discharge machine of lower casing body, or directly discharge outside the machine by the bottom of each whirlwind tube; At this moment, the whirlwind tube plays gas-solid (air-flow-fine powder) to be separated, and air-flow is discharged from the top of whirlwind tube, and the fine powder outlet of lower casing body or the bottom discharge gate of whirlwind tube will be locked wind.

Compare with existing dry method powder concentrator, the utility model has saved the classification rotor or the little fan blade of rotation, reduce the height of graded region, made the material of larger particles can be promoted to the high-effective classifying district, thereby realized the purpose of the coarse granule material pneumatic classification that particle separation diameter is bigger.

When adopting technical solutions of the utility model to carry out coarse grain footpath stock grading, if the size distribution of fine powder is strict, can be at the opening part above the inner housing to screen cloth being set between upper-cover or the through type annular is selected the powder blade, thus prevent to enter the fine powder district than coarse grain footpath material.

With the dry screening machine relatively, the utility model is used for the coarse granule material classification that particle diameter is 0.175mm-3mm, and efficient improves twice at least, and disposal ability is big, does not also exist needs often to change the problem of screen cloth.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment 1;

Fig. 2 is the structural representation of the utility model embodiment 2;

Fig. 3 is the structural representation of the utility model embodiment 3.

Among the figure: the 1-drive; The 2-bearing block; The 3-charging aperture; The 4-main shaft; The 5-spreading disk; The 6-blast pipe; The 7-inner housing; The outlet of 701-meal; The upper shed of 702-inner housing; 8-lower casing body; The outlet of 801-fine powder; The last shell body of 9-; The 10-support; The 11-upper-cover; 12-blanking awl; The 13-screen cloth; 14-through type annular is selected the powder blade.Alphabetic flag A represents the flow direction of wind (air-flow), and B is a material to be fractionated, and B1 and B2 represent powder material and the meal material after material to be fractionated separates by classification respectively.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further described.

Embodiment 1: with reference to Fig. 1, present embodiment comprises upper-cover 11, drive 1, bearing block 2, charging aperture 3, main shaft 4, blanking awl 12, spreading disk 5, blast pipe 6, inner housing 7, meal outlet 701, lower casing body 8, fine powder outlet 801, last shell body 9 is characterized in that, described bearing block 2, charging aperture 3, blanking awl 12 are installed on upper-cover 11, and described drive 1, main shaft 4, spreading disk 5 constitute rotary rotor part, and described main shaft 4 is installed on the bearing block 2 by bearing; Described shell body constitutes shell body integral body by last shell body 9, lower casing body 8, and support 10 is used for the installation of machine in the outside of shell body; Described fine powder outlet 801 is positioned at lower casing body 8 bottoms; The machine inner chamber that described inner housing 7 places shell body 9, lower casing body 8 to constitute, its top is provided with the opening 702 that allows gas and fine powder to pass through, and the blast pipe 6 that penetrates from shell body is equipped with at the middle part, and meal outlet 701 is established in the bottom.During work, wind (air-flow) A enters the machine center cavity that inner housing 7 constitutes by blast pipe 6 from the middle part, rotor part rotates by its drive 1 and the drive unit connection that can regulate rotating speed, material B to be fractionated enters the back from charging aperture 3 and drops on the spreading disk 5 by blanking awl 12, spread the graded region of the machine center cavity that constitutes to inner housing 7 by spreading disk 5, thick material B2 dominates owing to gravity accounts for, export outside the 701 discharge machines from the meal of inner housing 7 bottoms, fine powder B1 is then driven by air current A and rises, opening 702 by inner housing 7 tops enters in the space between inner housing 7 and the shell body, exports outside the 801 discharge machines from the fine powder of lower casing body 8 bottoms.

Embodiment 2: with reference to Fig. 2, present embodiment is compared with embodiment 1, difference only is to have set up screen cloth 13 at 702 places of the opening above the inner housing 7 between the upper-cover 11, make powder material just can enter the fine powder district by sieve aperture, realize classification for the second time, thereby guaranteed the strictness control of fine powder particle diameter.With common sieve screening material have 2 different: the one, the material that enters this screen cloth is by classification, screen cloth only need intercept on a small quantity and enter the fine powder district than coarse granule, does not resemble common sieve and need handle all materials; The 2nd, the material that enters this screen cloth is to be suspended in the gas, and screening efficiency is high and be difficult for the obstruction sieve aperture, does not resemble common sieve by gravitational field screening material.Owing to utilize existing gas on the structure, powder passage to realize second level classification, make simple in structure, classification efficiency is high.

Embodiment 3: with reference to Fig. 3, present embodiment is compared with embodiment 1, difference only is to select powder blade 14 at 702 places of the opening above the inner housing 7 to having set up the through type annular between the upper-cover 11, this through type annular select powder blade 14 contain powder gas by the time only meet granularity requirements thin material just can enter the fine powder district, realize classification for the second time, thereby guaranteed the strictness control of fine powder particle diameter.Simple in structure, classification efficiency is high.

Claims

1, a kind of coarse particle separator, comprise upper-cover (11), drive (1), bearing block (2), charging aperture (3), main shaft (4), blanking awl (12), spreading disk (5), blast pipe (6), inner housing (7), meal outlet (701), lower casing body (8), fine powder outlet (801), last shell body (9), it is characterized in that, described bearing block (2), charging aperture (3), blanking awl (12) is installed on upper-cover (11), described drive (1), main shaft (4), spreading disk (5) constitutes rotary rotor part, and described main shaft (4) is installed on the bearing block (2) by bearing; Described shell body constitutes shell body integral body by last shell body (9), lower casing body (8), and support (10) is in the outside of shell body; Described fine powder outlet (801) is positioned at lower casing body (8) bottom; Described inner housing (7) places the machine inner chamber that is made of last shell body (9) and lower casing body (8), and its top is provided with the opening (702) that allows gas and fine powder to pass through, and the middle part is equipped with the blast pipe (6) that penetrates from shell body, and meal outlet (701) is established in the bottom.

2, coarse particle separator according to claim 1 is characterized in that, described upward shell body (9) is common tubular structure or whirlwind tubular structure.

3, coarse particle separator according to claim 1 and 2 is characterized in that, locates to be provided with screen cloth (13) between the upper-cover (11) at the opening (702) of inner housing (7) top.

4, coarse particle separator according to claim 1 and 2 is characterized in that, locates to select powder blade (14) to being provided with the through type annular between the upper-cover (11) at the opening (702) of inner housing (7) top.