CN2255311Y

CN2255311Y - Lower-driving vertical ball-free mill

Info

Publication number: CN2255311Y
Application number: CN 96243720
Authority: CN
Inventors: 董建国; 周庆
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-10-04
Filing date: 1996-10-04
Publication date: 1997-06-04
Anticipated expiration: 2006-10-04

Abstract

The utility model provides a lower-driving vertical ball-free mill which comprises an upper cover which is provided with a hopper, a lower seat which can be disassembled and connected with the upper cover, a bearing pedestal which can be disassembled and connected with the lower seat, an air inlet chamber which is formed between the lower seat and the bearing pedestal, a material slag outlet which is arranged between the lower seat and the bearing bottom seat, a milling chamber which is arranged on the lower seat and fixed by the upper cover, and a main shaft which is arranged in the bearing pedestal, wherein, the shaft cross section of the milling chamber is in the shape of an inner tooth of an external cone, the upper end of the main shaft is provided with a milling impeller, the lower end is connected with a motor, and the center is provided with a fountain water pipe. The utility model has the advantages of small vibration, stable and reliable operation, long service life, high milling efficiency, convenient maintenance and convenient part replacement.

Description

The vertical mill without ball of underdrive

The utility model relates to a kind of size reduction machinery, particularly relates to the vertical mill without ball of a kind of underdrive.

Be used to build, the size reduction machinery kind of industries such as metallurgical, cement and light industry is a lot, Chinese patent CN94236603.4 has introduced a kind of mill without ball, it comprises the grinding chamber that contains charging aperture and discharging opening, motor, an end that is connected with motor output shaft stretches into the main shaft in the grinding chamber, be loaded on the rotor in the grinding chamber of placing on the main shaft, be loaded on the powerful formula dragon wind separator that is positioned at the grinding chamber exit on the main shaft.Compare with ball mill, it has in light weight, and energy consumption is low, the advantage of finished product fine size, but grinding chamber shaft section profile is a polygon, and inconvenience increases dihedral quantity, wearing layer on the rotor inner wall is the screw-thread steel lining of welding, and the inconvenience of wearing and tearing back is changed, moreover, motor is positioned at the grinding machine top, and main shaft stretches in the grinding chamber, and the main shaft cantilever is longer, whirling vibration is big, main shaft and bearing do not have cooling infrastructure, and operating temperature is higher, influence service life.

The purpose of this utility model is to provide a kind of vibration little, crush efficiency height, the vertical mill without ball of the underdrive of convenient maintenance and replacement.

The vertical mill without ball of the utility model underdrive is to realize like this, it comprises the loam cake of being with hopper, removably connect with loam cake following,, form inlet air plenum between following seat and the bearing base with the bearing base of a following releasable connection, and offer and expect the slag outlet, be loaded on down the single piece grinding chamber that last its shaft section is shaped as the outer cone internal tooth form and is fixed by loam cake, be installed in the bearing base, the pulverizing impeller is equipped with in its upper end, the main shaft that the lower end is connected with motor, the alignment of shafts are inserted with the fountain water pipe.Wherein, the outlet of the material slag of inlet air plenum setting can prevent solid accumulation and stall.Grinding chamber is single-casting, and is replaceable.The motion of the main shaft upwards transmission of serving as reasons down, jib-length reduces, and the force-bearing situation of main shaft improves, and it is reliable to operate steadily, and the fountain water pipe of the alignment of shafts plays the cooling main shaft.

The utility model prolongs its service life for reducing the operating temperature of grinding chamber and bearing base, can on loam cake, following and bearing base water-cooling jacket be set, and carries out recirculated water and cools off.

The blowing chassis is housed on following of the present utility model, and there is the medium pore that communicates with inlet air plenum at its center, helps to disperse and stir material, improves crush efficiency.

Place the feed back dish in the grinding chamber of the present utility model, and fixed by loam cake, the material that is used for collecting process of lapping more helps high efficiency and pulverizes in pulverizing the impeller place.

Pulverizing impeller of the present utility model is by impeller body, and with the wear plate of impeller body releasable connection, and retainer ring is formed.Wear plate generally is to be embedded on the impeller body, and by retainer ring and bolting, wear plate wearing and tearing back is changed very convenient.

Cover also on the vertical mill without ball of the utility model underdrive and can connect whizzer, be generally bolt and connect, collection is pulverized and is separated into one.

The course of work of the vertical mill without ball of the utility model underdrive is, material enters grinding chamber from charging aperture during operation, quicken to dish out through pulverizing impeller, meet charge level with grinding chamber and collide, simultaneously, be subjected to entering by inlet air plenum, the swirling eddy of sending through blowing chamber chassis medium pore stirs, make material from bump, autogenous grinding and pulverizing, be drawn out of after the whizzer of wherein thin material through being arranged on the upper cover outlet place separates, rest materials then falls to participating in to grind again, until qualified separated extraction.

The advantage of the vertical mill without ball of the utility model underdrive is grinding efficiency and fineness of grind height, vibrates for a short time, and the main shaft life-span is long, and moving line stabilization is reliable, and wearing terrain change convenient.

Describe the utility model embodiment in detail below in conjunction with accompanying drawing.

Fig. 1: the utility model structural representation

Fig. 2: pulverize the blade wheel structure schematic diagram

The B-B cutaway view of Fig. 3: Fig. 2

The vertical mill without ball of the utility model underdrive comprises the loam cake 2 of being with hopper 1, removably connect with loam cake 2 following 7, bearing base 8 with following 7 releasable connections, form inlet air plenum 15 between following seat 7 and the bearing base 8, and offer and expect slag outlet 14, be loaded on down the single piece grinding chamber 6 that its shaft section is shaped as the outer cone internal tooth form and is fixed by loam cake 2 on the seat 7, be placed on the feed back dish of being fixed by loam cake 2 in the grinding chamber 63, be arranged on down the blowing chassis 5 on the seat 7, be installed on the bearing base 8 by bearing 12, its upper end is equipped with and is pulverized impeller 4, the main shaft 11 that the lower end is connected with motor, insert the fountain water pipe 10 of the alignment of shafts, and with loam cake 2 bolted whizzers 9, loam cake 2, be provided with water-cooling jacket 13 on following seat 7 and the bearing base 8, impeller is by impeller body 16, form with the wear plate 17 and the retainer ring 18 of impeller body releasable connection.

Claims

1, the vertical mill without ball of a kind of underdrive, comprise the loam cake of being with hopper, removably connect with loam cake following, bearing base with a following releasable connection, and grinding chamber, main shaft, be installed in the pulverizing impeller on the main shaft, it is characterized in that forming inlet air plenum between following and the bearing base, and offer the outlet of material slag, grinding chamber is the single piece that shaft section is shaped as the outer cone internal tooth form, be installed in down seat and go up and fixed by loam cake, the alignment of shafts inserts the fountain water pipe, and main shaft is installed in the bearing base, its upper end is equipped with the pulverizing impeller, and the lower end is connected with motor.

2, the vertical mill without ball of underdrive as claimed in claim 1 is characterized in that loam cake, following and bearing base are provided with water-cooling jacket.

3, the vertical mill without ball of underdrive as claimed in claim 1 or 2 is characterized in that on following the blowing chamber chassis being housed, and there is the medium pore that communicates with inlet air plenum at its center.

4, the vertical mill without ball of underdrive as claimed in claim 3 is characterized in that being placed with the feed back dish in the grinding chamber, and fixes by loam cake.

5, the vertical mill without ball of underdrive as claimed in claim 1 is characterized in that pulverizing impeller by impeller body, and with the wear plate of impeller body releasable connection, and retainer ring is formed.

6, the vertical mill without ball of underdrive as claimed in claim 1 is characterized in that covering and is removably connected with whizzer.