CN1089190A

CN1089190A - Angle screw lining plate grinder

Info

Publication number: CN1089190A
Application number: CN 93110401
Authority: CN
Inventors: 邱仰止; 周慧平
Original assignee: Changsha Research Institute Of Mining And Metallurgy ministry Of Metallurgical Industry
Current assignee: Changsha Research Institute Of Mining And Metallurgy ministry Of Metallurgical Industry
Priority date: 1993-01-03
Filing date: 1993-01-03
Publication date: 1994-07-13
Anticipated expiration: 2013-01-03
Also published as: CN1037495C

Abstract

Compared with the common angle lining grinder, the angle lining grinding surface of the novel angle spiral lining grinder adopts a specific waveform, namely, each angle lining unit arranged along the circumferential direction is divided into a front part and a rear part according to the running direction of the grinder, the grinding surface of the front part is one or more smooth waves, and the two ends are wave crests; the back half grinding surface is a tooth-shaped structure, and the wave trough is in the front and the wave crest is in the back according to the running direction of the grinder. The novel angle lining grinder has the effects of high yield, energy conservation, ball saving and the like.

Description

Angular screw lining board grinder

The present invention relates to the angular screw lining board grinder that working face is a specific waveforms.

Spiral angular liner (being called for short the angle lining) is after early sixties Austria Einger-Wagger Biro company releases first and tests, once fashionable for a time with many advantages such as its energy-conservation joint ball and raising grinding efficiencies, in worldwide, launched to develop widely and test.

According to reports, by nineteen eighty-two, there are 50 grinding machines to reequip the angle lining abroad approximately, be the level and smooth square spiral angular liner in angle, garden the most general (as Fig. 5) wherein with abradant surface, the abradant surface that also has is for adding taper classification type (as Fig. 4) on smooth surface, though the energy-conservation joint ball of the angle of these types lining grinding machine result of use mainly is suitable for secondary grinding (or cement grinding mill two storehouses, three storehouses).

Domestic angle lining research is started in the seventies, the result of the test of units such as Cangzhou Area cement plant, cement plant, Handan shows that being four square spiral angular liners of angle, garden can only be used for cement grinding mill two, three storehouses, if a storehouse is also with this angle lining, treating capacity just descends significantly, even use in two, three storehouses, effect is very unobvious yet.

For this reason, China has developed the so-called hole enlargement mill that the grinding machine external diameter is enlarged again, dwindles the more problem that causes the treating capacity drop to solve because of established angle lining back dischargeable capacity, has at present domesticly manufactured experimently nearly ten.Because of the angle is lined with energy-saving effect, grinding machine motor power output is basic identical before and after the hole enlargement.According to investigations, through this improvement, domestic have the result of the test in two tame cement plants to be: the hole enlargement mill of established angle lining is compared with the non-hole enlargement mill that common liner plate is installed, and does not still have clear superiority, and tell the piece phenomenon when feeding granularity is bigger than normal.In addition, some metallic ores select factory also to carry out angle lining test, all abandon because of no remarkable result midway.

In sum: Fig. 3 is a general angle lining audio-visual picture, except that Fig. 4 Fig. 5, also have the example that the conventional waveform (as double wave, ripplet etc.) of lining board of grinder is used for angle lining abradant surface, these angles lining grinding effects not the reason of Cui we think and be that angle lining abradant surface Waveform Design is unreasonable to be caused.

The novel angle lining grinding machine that the purpose of this invention is to provide a kind of high yield, energy-conservation joint ball.

For achieving the above object, the angle lining structure scheme of angle provided by the invention lining grinding machine is:

1 installs some liner plates on the column-shaped barrel inner surface of grinding machine garden, wherein every several liner plates are combined into lining unit, an angle, lining unit, some angles arranging situation in cylindrical shell is: along the cylindrical shell length direction, every one section cylindrical shell distance, the setting angle of its unit is wrong mutually.Identical in the angle of cylindrical shell garden Zhou Fangxiang lining unit number with the angle number of angle lining.

Six faces of every block of liner plate in the lining unit, 2 above-mentioned novel angle are divided into three opposites.The situation on each opposite is: a pair of towards the grinding machine center of rotation abradant surface and with abradant surface is opposing and towards the installed surface of grinding mill barrel, a pair of is along the both ends of the surface that stretch between abradant surface and the installed surface, another is to being the two sides along the cylindrical shell length direction.From the cylindrical shell cross section, the installed surface that lining unit, said angle is formed forms Zheng Yuan angle polygon on week in whole cylindrical shell garden, and the garden camber line and the cylindrical shell at Qi Yuan angle are tangent, and also the straight line that is connected with the camber line two ends is tangent.Angle lining between the center of adjacent two sections straight lines is above-mentioned lining unit, an angle.

3 according to the mill running direction, lining unit, said angle is divided into first part and latter part again, the intersection point of first part and latter part installed surface is the point of contact of said garden camber line and cylindrical shell, the abradant surface of lining first part, unit, said angle forms one or more smooth ripples, and the two ends, first part are crest.The abradant surface of lining latter part, said angle forms the structure of similar profile of tooth, and its tooth-shape structure is made up of the half-wave of several stairsteppings, rudder for ship shape or several single ripples, still presses grinding machine rotation direction branch, and then its profile of tooth arranging situation is: trough is preceding, crest after.

Partly fill so that install with support in space between 4 jiaos of linings and the cylindrical shell.

Fig. 1 is a grinding machine overall structure schematic diagram of the present invention.

Fig. 2 is the part cross-sectional view of grinding mill barrel of the present invention.

The drawing explanation: as shown in Figure 1, grinding machine has a garden column-shaped barrel 2, and some liner plates are installed on the inner surface of cylindrical shell 2, and raw ore enters cylindrical shell 2 from the charging aperture 1 of grinding machine one end, flows out from cylindrical shell other end discharging opening 3 after milling medium is pulverized.

One of the present invention angle lining grinding machine example preferably sees Fig. 2, join end to end by 4 angles lining unit EFHC and to be installed in the cylindrical shell 2 along garden Zhou Fangxiang, angle lining unit EFHC is made up of six blocks of liner plates, its combining structure is: have an abradant surface EDC and the installed surface FGH towards cylindrical shell towards grinding machine center of rotation O, EF, CH are respectively two end faces of each lining unit, angle, press the mill running direction shown in the figure, each lining unit, angle is divided into first part DGHC and latter part EFGD.

The installed surface FGH of angle lining unit EFHC forms one section garden arc NP and two sections straight line FN, PHs tangent with the garden arc, and two halves intersection point G partly also was the point of contact of garden arc and cylindrical shell 2 before and after the mid point of garden segmental arc was.

The abradant surface DC of first part DGHC forms a smooth big ripple, and wherein D, C are wave crest point, and the mid point of DC ripple is a trough.The abradant surface ED of latter part EFGD forms (EI, JK, LM as shown) by three end to end stairsteppings, presses mill running direction branch among the figure, and then trough I, K, M be preceding, crest E, J, L after.Fill with support in the installed surface FGH of lining unit, EFHC angle and the gap between the cylindrical shell 2, and bolt passes liner plate EFHC, support and cylindrical shell 2 usefulness packing rings, female screw bolt is tight, thereby liner plate EFHC, support are fixed on the cylindrical shell.

Angle lining unit EFHC arranges in the mode that its length direction is installed by the certain angle that staggers every segment distance angle lining in the end to end arrangement of the garden of cylindrical shell 2 Zhou Fangxiang, thereby covers the total inner surface of cylindrical shell 2.

The lining general potassium steel that adopts in angle is made, and support generally adopts ordinary steel to make.

From the whole garden of the cross section week of cylindrical shell 2, the angle lining installed surface of above-mentioned example forms the square curve in angle, garden, according to the grinding machine size, the difference of grinding environment, also can be designed to angle, hexagon garden or polygon garden angular curve, difference in height as for the Wave crest and wave trough of each ripple among the lining unit EFHC of angle, the wave number of the big ripple of first part DGHC, the number of the abradant surface tooth-shape structure of latter part EFGD and shape all need to decide on the ore grinding situation, but preceding part two ends D, C remain wave crest point, and the Wave crest and wave trough orientation of latter part profile of tooth is constant.

Have following advantages when being used for grinding machine according to angle of the present invention lining waviness of the surface:

1 contrasts with existing angle, in the mill running process, cylindrical shell whenever rotates a circle, the total distance of the radial motion of milling medium is significantly increased, thereby grinding efficiency is improved greatly, this is because the first part of lining unit, angle is different from the waveform of latter part, the waveform that is the latter part has strengthened the radial difference between the each point on the abradant surface, if the waveform same with the latter part adopted in the first part, then the radial difference between the each point on this part abradant surface can reduce, and is unfavorable for strengthening the radial motion of ball.

2 milling medium good fluidities. In the present invention, the smooth smoothness of the waviness of the surface of whole garden on week, milling medium can successfully flow along the liner plate surface, thus the radial motion by the decision of liner plate form is carried out in assurance.

3 grinding efficiencies are more stable. Stable mainly constant from the liner plate waviness of the surface of grinding efficiency, and the liner plate surface does not have sharp-pointed overhang among the present invention, it is relatively even to wear and tear, thereby can safeguard liner plate abradant surface waveform.

Claims

1, a kind ofly relates to the angular screw lining board grinder that abradant surface is a waveform, some liner plates of installing at cylinder inner surface are to arrange like this: along the cylindrical shell length direction, every one section cylindrical shell distance, the angle of being made up of several liner plates serves as a contrast the certain angle that staggers mutually when the unit is installed; And in a certain cross section of cylindrical shell garden Zhou Fangxiang, the installed surface that lining unit, angle is formed is Zheng Yuan angle polygon; Angle lining unit number is identical with the angle number of angle lining, and the garden camber line at angle, garden is tangent with the straight line that the camber line two ends are connected with cylindrical shell respectively, and partly fill with support in the space between angle lining and the cylindrical shell.The invention is characterized in: from cross section, grinding mill barrel garden, in the Zheng Yuan angle polygon that angle lining installed surface forms, angle lining between the mid point of every adjacent two sections straight lines is lining unit, an angle, press the grinding machine rotation direction, two partly before and after lining unit, angle was divided into, and the intersection point of first part and latter part installed surface is the point of contact of aforementioned garden camber line and cylindrical shell.According to the requirement of grinding condition, front and back two abradant surface partly adopts different waveforms.

2, angular screw lining board grinder according to claim 1, it is characterized in that: the abradant surface of lining first part, unit, described angle forms one or more smooth ripples, the two ends of first part abradant surface are crest, and the latter part abradant surface forms similar tooth-shape structure.

3, angular screw lining board grinder according to claim 2, it is characterized in that: the profile of tooth abradant surface of lining latter part, unit, described angle can be made up of the half-wave of some stairsteppings, rudder for ship shape or several single ripples, press grinding machine rotation direction branch, its profile of tooth arranging situation be trough preceding, crest after.