CN201192656Y

CN201192656Y - Dual-layer scraper device

Info

Publication number: CN201192656Y
Application number: CNU2008201055868U
Authority: CN
Inventors: 王华业
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-21
Filing date: 2008-04-21
Publication date: 2009-02-11
Anticipated expiration: 2018-04-21

Abstract

A device with an upper-layer scraper and a lower-layer scraper for vertical-milling and pre-grinding equipment adopts the technical proposal that the upper-layer scraper is fixed at the upper part of a grinding disc, and the lower scraper is fixed at the lower part of the grinding disc; the upper-layer scraper is helpful to push coarse materials to a discharge chute and then return the coarse materials to the center of a mill to grind; and the lower-layer scraper pushes qualified powders out of an exhaust machine. Therefore, the separation and the discharging of the fine and the coarse powders are achieved in the mill.

Description

Double-deck up and down screeding device

Technical field:

The utility model relates to the pre-milling equipment of a kind of cement vertical mill, particularly double-deck screeding device up and down.

Background technology:

In cement grinding, the pre-milling equipment of Vertical Mill is an environment protection energy-saving equipment.Material behind the pre-milling equipment grinding is a kind of semi-finished product, enters the ball mill grinding behind the grinding again to finished product.Half-finished fineness produces decisive influence for the output and the power consumption of subsequent ball milling machine.At present, the pre-milling equipment of Vertical Mill inside is provided with screening, but the problem that exists is the device that does not have dispersed material on the screening face, the thickness particle can not effectively separate, there is a coarse fodder to get back in the fines, this difficulty of having joined spherical zone for follow-up milling equipment has influenced system throughput and mill efficiency.

The utility model content:

The utility model purpose is, the double-deck up and down screeding device that provides the pre-milling equipment of a kind of Vertical Mill to use effectively disperses the material on compass screen surface top, and the effective separation that fully improves the thickness particle has improved half-finished fineness, improves the output in the follow-up milling equipment.

Technical solutions of the utility model are: up and down double-deck scraper plate is equipped with in the mill top and the bottom, simultaneously in that the hopper transfer is moving up and down, the thickness powder is passed down in one material collecting device.Double-deck up and down screeding device is formed and is comprised upper strata scraper plate and lower floor's scraper plate, and the upper strata scraper plate is fixed by bolts on the mill collet, and lower floor's scraper plate is fixed on the bottom of mill.The upper strata scraper plate moves on top coarse fodder groove and compass screen surface, abundant dispersed material, and a thickness material effectively separates coarse fodder to lower slider, and fines is sized in the hopper lower house of bottom; Lower floor's scraper plate then moves in the fines groove of the bottom of lower case, takes material to mill outer material collecting device.The upper strata scraper plate helps to push thick material to blowpit like this, carries lifting means to return the mill center by other again and grinds; Lower floor's scraper plate is passed qualified powder to discharge outside the body, has realized the separation and the discharge of thickness powder in mill.

The beneficial effects of the utility model are: the setting of double-deck scraper plate up and down, effectively solved effective separation of thickness particle, stopped sneaking into of meal in the fines, the output of subsequent ball milling machine obviously is improved, amount of increase in production reaches more than 30%, and power savings is remarkable.

Description of drawings:

Fig. 1 is the part sectioned view of double-deck screeding device up and down

1, backgauge Fig. 2, mill 3, upper strata scraper plate 4, lower case 5, sieve 6, movable support 7, coarse fodder groove 8, gripper shoe 9, lower floor's scraper plate

The specific embodiment

Among Fig. 1, collet (1) is fixed on (2) on the mill, rotates with mill (2); Upper strata scraper plate (3) is fixed with on the collet (1); Gripper shoe (8) and coarse fodder groove (7) all are fixed on the lower case (4); Sieve (5) is supported on the movable supporting (6), moves with mill (2).Upper strata scraper plate (3) is gone up rotation at the coarse fodder groove and the sieve (5) on top, with the material behind the grinding, has carried out full and uniform cloth, and makes material move in the coarse fodder groove of top.Fines is gone up screen analysis from sieve (5) and is got off, and enters in the bottom hopper lower case (4), and lower floor's scraper plate that fines is rotated in lower case takes in next road material collecting device, and the upper strata is fixed on mill top, and lower floor's scraper plate is fixed on the mill bottom; The upper strata scraper plate helps to push thick material to blowpit, rises to the mill center again from the outside and grinds; Lower floor's scraper plate is passed qualified powder and is discharged outside the body, has realized the separation and the discharge of thickness powder in the mill.

Claims

1. double-deck up and down screeding device is characterized in that: up and down double-deck scraper plate is equipped with in the mill top and the bottom, simultaneously in that the hopper transfer is moving up and down, the thickness powder is passed down in one material collecting device.