CN2187494Y

CN2187494Y - Ball grinder for closed circulation powder grinding system

Info

Publication number: CN2187494Y
Application number: CN 94211487
Authority: CN
Inventors: 秦国鑫; 韦绥好
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-05-08
Filing date: 1994-05-08
Publication date: 1995-01-18
Anticipated expiration: 2004-05-08

Abstract

The utility model belongs to a raw material ball milling device used for a closed circulation powder milling system. The utility model is composed of a feed pipe (1), a mill barrel body (2), a hollow shaft (3), a discharging hood (6), a discharging pipe (7), a wind pipe (5), a bent pipe (4), etc. The utility model is obtained by carrying out technical reformation for the original ball mill. Compared with the original ball mill used for a closed circulation system, the utility model has the characteristics of excellent ventilation in the mill, small airflow resistance, low temperature in the mill, quick material flow, high powder milling output of the raw material, low electricity consumption, etc. When the utility model is matched with a powder concentrator which is slightly improved, compared with the originally designed output, the powder milling output of the raw material is increased by 50% to 80%.

Description

Ball grinder for closed circulation powder grinding system

The utility model belongs to the raw material ball mill apparatus that a kind of closed cycle grinding system uses.

Existing closed cycle grinding system ball mill, when material in ball mill grinding to certain fineness after the discharging grate plate is delivered to by quill shaft to be fixed in to be located in the discharging cover on the terminal outer wall of quill shaft screens in the tail sheet with grinding mill barrel rotation synchronously, qualified finished product is discharged and selected to fines by screening through discharge nozzle in elevator is transported to powder concentrator, do not abandon it by the coarse fodder of screening outside the coarse fodder discharge nozzle is discharged machine.Because the exhaust outlet of the airduct of ball mill is provided in a side of the top of discharging cover, and the gas in the ball mill non-be located at the tail sheet in the discharging cover again on being fixed in the terminal outer wall of quill shaft sieve aperture discharges, so improper ventilation, temperature height in the ball mill, gas-flow resistance is big, Flow of Goods and Materials is slow, the raw material grinding yields poorly, power consumption is very big.

The purpose of this utility model provide a kind of after technological transformation ball mill reached that well-ventilated in the machine, temperature reduce, gas-flow resistance is little, Flow of Goods and Materials is accelerated, the raw material grinding output improves, reduced the closed circuit circulatory system ball mill of power consumption.The utility model with improve a little after the supporting use of powder concentrator, the former design output of its raw material grinding PR improves 50～80%.

The purpose of this utility model is achieved in that the closed cycle grinding system mainly is made of feed pipe 1, grinding mill barrel 2, quill shaft 3, discharging cover 6, discharge nozzle 7, airduct 5, bend pipe 4 etc. with ball mill, it is original ball mill to be removed be fixed in the tail sheet be located on the quill shaft 3 terminal outer walls in the discharging cover 6, stifledly go up or remove the coarse fodder discharge nozzle, be provided with its upper end dock with airduct 5 and fix its lower end and stretch into bend pipe 4 in the quill shaft 3 in discharging cover 6, and the exhaust outlet that makes airduct 5 moves on to the interior technological transformation of quill shaft 3 and obtains from the top of discharging cover 6.

Below in conjunction with accompanying drawing description is made in enforcement of the present utility model.

Fig. 1 is a structural representation of the present utility model.

According to shown in Figure 1, original closed circuit circulatory system is split out it with ball mill be fixed in the tail sheet of being located on the quill shaft 3 terminal outer walls in the discharging cover 6, stifled go up or remove the coarse fodder discharge nozzle, carry out a bend pipe 4, the upper end of bend pipe 4 is docked fixing with airduct 5, the lower end of bend pipe 4 is stretched in the quill shaft 3, and the exhaust outlet that makes airduct 5 moves on in the quill shaft 3 from the top of discharging cover 6, just obtains the utility model when above transformation finishes.

Claims

1, a kind of by grinding mill barrel (2), feed pipe (1), quill shaft (3), discharging cover (6), discharge nozzle (7), airduct (5), be fixed in and be located at the tail sheet that rotates synchronously with grinding mill barrel (2) in the discharging cover (6) on the terminal outer wall of quill shaft (3), the closed cycle grinding system ball mill that coarse fodder discharge nozzle etc. constitute, it is characterized in that removing its former tail sheet of being located on the terminal outer wall of quill shaft (3) in the discharging cover that is fixed in, no longer establish the coarse fodder discharge nozzle, in discharging cover (6), be provided with its upper end and dock with airduct (5) and to fix its lower end and stretch into bend pipe (4) in the quill shaft (3).