CN1564712A

CN1564712A - Wear plate assembly

Info

Publication number: CN1564712A
Application number: CN02819561.2A
Authority: CN
Inventors: 雷内·斯泰尔斯
Original assignee: Magotteaux International SA
Current assignee: Magotteaux International SA
Priority date: 2001-10-03
Filing date: 2002-09-19
Publication date: 2005-01-12
Also published as: BE1014412A3; WO2003031070B1; EP1432518A1; ATE297810T1; DE60204710T2; EP1432518B1; DE60204710D1; ES2243761T3; WO2003031070A1

Abstract

In a rotary mill with an internal armouring system comprising individual armour plates (10), intermediary sole plates (11, 14) are provided in order to fix the aforementioned armour plates (10) to the ferrule. Said sole plates are distinguished by the radius of curvature of the main faces thereof and/or the angle between said main faces. If said sole plates (11, 14) are selected carefully, the same type of armour plates (10) can always be used regardless of the diameter of the mill.

Description

The scuff panel device

Technical field

The present invention relates to a kind of guard system that is used for a rotating disintegrator, rotating disintegrator comprises that one centers on its longitudinal axis rotation and a cylindricality turnbarrel and a grinding line load of wanting material crushed is housed, described guard system is made up of some single protective plates, these protective plates are arranged in some and are fixed on annular arranged side by side on the sleeve lining, and each protective plate comprises that one extends in a foot the protuberance placement surface towards sleeve interior surface relative with the inclined cut between the head of protective plate.

Background technology

Such pulverizer has been described among the file EP0998353.This pulverizer is used in particular in cement industry and the mining industry.Want material crushed to enter, and in the process that outlet is advanced, between pulverizing power, pulverized and grind gradually at it from the side of pulverizer.

In the prior art, pulverizer overlay or protective plate have the section that a bottom that adapts with the radius of curvature of sleeve and changes according to the required degree of lifting.The curvature that protective plate adapts to pulverizer requires the placement surface of protective plate and the sleeve of pulverizer that one similar curvature radius is arranged, and avoids protective plate part broken and sleeve to knock.

Several and the design of pulverizer and the relevant factor of service condition of pulverizer are depended in the required effect of raising, thereby need to select protective plate raise a determined value highly, this value can be according to circumstances 100 and 160mm between change.

All these need produce a protective plate model that can be used in each pulverizer, therefore improve the enforcement of pulverizer, and it is important, in the variation that does not have aspect the storage of renewal part on the cost, because generally comprise some very different pulverizers of size sometimes between crushing vehicle.

Summary of the invention

The objective of the invention is to be provided with a kind of new guard system that is used for previously described rotating disintegrator, the pulverizer of different-diameter can be equipped with a kind of standard-sized metal protection plate by this system, and can change the degree of raising.

In order to reach this purpose, the guard system that the present invention proposes is characterised in that, comprise that some are used to be inserted in the central floor panel between single protective plate and the pulverizer sleeve, the apparent surface that each base plate has first type surface that the curvature of the placement surface of curvature and adjacent protective plate adapts and curvature and sleeve curvature to adapt.This system preferably includes the different dissimilar central floor panel of radius of curvature of at least two first type surfaces.

One of them type comprises that angle between some they is less than 10 ° first type surface.

Can protective plate be screwed on the sleeve with some set bolts with hemispherical nose, the hemispherical nose of bolt is arranged in the corresponding hemispherical groove of protective plate.

Description of drawings

As an example to the detailed description of a preferred embodiment, can understand further feature of the present invention by with reference to the accompanying drawings, accompanying drawing is as follows:

Fig. 1 a and 1b represent the cross section of present two kinds of dissimilar protective plates that use in ball mill;

Fig. 2 a represents the cross section of a first kind central floor panel according to the invention;

Fig. 2 b represents the cross section of second a type central floor panel according to the invention;

Fig. 3 represents a cross section that has the guard system of Fig. 2 a base plate;

Fig. 4 a and 4b represent to use by different way the cross section of the guard system of Fig. 2 b base plate;

Fig. 5 is the section of the protective plate of its fixed system of expression.

The specific embodiment

Fig. 1 a and 1b represent two known protective plate 1a and 1b.These protective plates 1a and 1b comprise that one extends in highly to the protective plate foot 5 of h and highly is the inclination working plate 2 between the wrench 3 of H, and the placement surface 4 of a projection, placement surface 4 abuts on the sleeve interior surface of not showing, under the situation of Fig. 1 a and 1b, sleeve rotates along clockwise direction.This placement surface 4 also can comprise cavity as shown in phantom in FIG., to alleviate the weight of protective plate.

Protective plate 1a and 1b are by being bolted on the sleeve of not showing.For this reason, protective plate 1a and 1b comprise the groove that is used to accept the set bolt head.

Unique difference between protective plate 1a and the 1b is that the working surface of protective plate 1a is level and smooth, and the working surface of protective plate 1b has longitudinal ripple or other difform projection or depression, the slip of material when rotating to reduce pulverizer.

The curve that the placement surface 4 of two protective plates should have a curve with sleeve more or less to adapt, this causes the shortcoming described in the foreword.In order to address this problem, the present invention proposes to use the central floor panel shown in Fig. 2 a and 2b.

Fig. 2 a represents the thin base plate 11 of a symmetry, and this base plate 11 is made by the steel of alloy seldom, therefore can slight deformation, perhaps make by the extending cast iron of spheroidal graphite cast-iron type.The base plate 11 that this and a protective plate have same surface has two identical curved

major surfaces

12 and 13, and the radius of curvature of head surface 12 is greater than the radius of curvature on surface 13.The center of base plate 11 has one to make and fix the eyelet 16 that a bolt passes through.

Fig. 3 represents the protective plate 10 shown in Fig. 1 a to be fixed on example on the sleeve 30 of a pulverizer with base plate 11.In this case, the curvature on the surface 12 of base plate 11 adapts with the curvature of the placement surface of protective plate 10 more or less, and the curvature on surface 13 and the curvature of sleeve 30 adapt.When being locked at protective plate 10 on the sleeve, base plate is by distortion and the diameter of sleeve 30 and possible irregular adapting, as shown in Figure 3, and to guarantee the best in place of each protective plate 10.Do not have these base plates, the protective plate 10 that the radius of curvature of placed side is bigger than sleeve radius of curvature can not abut on the sleeve in the central area, and is therefore very fast destroyed.

The base plate 11 of Fig. 2 is symmetrical, and can only be consistent with the radius of curvature of protective plate/sleeve, can not change the degree of raising of the protective plate 10 that it supports.Therefore when raising of protective plate 10 is consistent with raising of wishing, use this base plate, so that make relevant pulverizer have good crushing effect.

Too little or make too greatly under the situation that pulverizer can not well move raising of protective plate 10, the present invention proposes the base plate of second type shown in Fig. 2 b.This base plate 14 also comprises two

surfaces

12 and 15 that radius of curvature is different, so that transition between the curvature of the curvature of formation protective plate 10 and sleeve 30.But, form one here between two

surfaces

12 and 15 between 0.1 ° to 10 ° and be preferably angle [alpha] between 1 ° to 3 °.

Fig. 4 a and 4b represent to use two kinds of different modes of base plate 14.In being provided with of Fig. 4 a, base plate 14 is raised the height of the foot 5 of protective plate 10, therefore reduced the foot 5 of protective plate 10 height h (see Fig. 1 a) with the difference between the height of head H of protective plate 10, so just reduced the effect of raising of pulverizer pulverizing load.

On the contrary, in being provided with of Fig. 4 b, the foot 5 of protective plate almost remains on the sustained height, and the head of protective plate 10 is elevated, so just increase the height h of protective plate 10 foots and the difference between the protective plate height of head H, therefore improved the effect of raising of protection.

Therefore, can have the surface 12 of different curvature radius and the pulverizer that the 13 dissimilar same type protective plates of base plate 11 usefulness are equipped different size by placement.In addition, not only can change into another to the degree of lifting of a pulverizer arbitrarily and lift degree, can also raise degree in the same indoor change of a definite pulverizer.

But, as will with reference to below see in object lesson, in fact do not need the base plate of a lot of types, the central floor panel of four even two types can be arranged.In order to equip the pulverizer of diameter between 2.4 to 5.8 meters, can only establish the protective plate of a single type and the central floor panel of two or four types, one of them or two are the symmetrical central floor panel of Fig. 2 a type, one or two is Fig. 2 b type.Under the diameter of pulverizer was situation between 2.4 to 3.3 meters, the radius of curvature of sleeve was less, like this, when for bigger pulverizer protective plate being set, requires the curvature of protective plate placement surface and the curvature of sleeve to adapt.Do not have this adaptation, protective plate just has broken danger, because protective plate only is positioned on its longitudinal edge.Therefore use the base plate 11 of Fig. 2 type, base plate 11 has the surface 12 of curvature of an adaptation protective plate placement surface and radius of curvature at 1.2 to 1.6 meters and be preferably near 1.3 meters surface 13.The base plate 14 of Fig. 2 b type can also be set, so that change the degree of raising in case of necessity.

3.4 meters under the situation of 5.8 meters pulverizers because radius of curvature is big, the adaptation of the curvature of the bottom of protective plate 10 and sleeve 30 is no longer sharp-pointed.Placement surface 4 radius of curvature of protective plate 10 own make it use or not use base plate according to the radius of curvature of selecting to the placement surface of protective plate 10 in the scope of a big pulverizer.But, the problem in use, Always Suggest uses a central floor panel, perhaps use the base plate of one 11 type, to avoid sleeve 30 fragmentations or to be knocked, perhaps use the base plate of one 14 type, so that change the whole effect of raising of protection in addition by protective plate 10.

Therefore the base plates on two same principle bases of describing in the above of general use, but the radius of curvature of

inner surface

13 or 15 is bigger, between 1.7 meters to 2.9 meters, is preferably between 1.8 meters to 2.2 meters.In a word, by using following five parts, the guard system that the present invention proposes will can be used for all pulverizers between 2.4 meters to 5.8 meters:

-all pulverizers are used a unique protective plate 10;

-be the symmetrical base plate that 2.4 meters to 3.3 meters pulverizer uses one 11 type to diameter;

-be that 2.4 meters to 3.3 meters pulverizer uses the base plate of an inclination angle as 14 types of α to diameter;

-be the base plate that 3.4 meters to 5.8 meters pulverizer uses one 11 type to diameter;

-be the base plate that 3.4 meters to 5.8 meters pulverizer uses one 14 type to diameter;

Fig. 5 represents protective plate and base plate are fixed on the sleeve 30 of a pulverizer.This fixing by pass protective plate 10,

base plate

11 or 14 and the bolt 22 of sleeve 30 guarantee.Use inclined floor need use the bolt 22 with hemispherical nose 17, it also is hemispheric respective slot that hemispherical nose 17 is arranged in of protective plate 10.Like this, regardless of the bottom of protective plate 10 and the angle of sleeve 30, correctly clamping screw 22, and are not created in the bending in the shank of bolt 22.

Has shortcoming with the protective plate of bolting by bolt hole seepage material.In order to overcome this shortcoming, use a pad 19 between nut and pulverizer sleeve.This pad comprises a chamfering 20, is used to reserve the space that can put an elastomeric material Gask-O-Seal 21, and elastomeric material is compressed during bolt locking, therefore guarantees the sealing at bolt eyelet place.

Claims

1. the guard system that is used for a rotating disintegrator, pulverizer comprises that one is used for rotating and be equipped with cylindricality turnbarrel and pulverizing line load of wanting material crushed around its longitudinal axis, guard system is made of some single protective plates (10), protective plate (10) is arranged in some and is fixed on annular arranged side by side on the sleeve lining, each protective plate (10) comprises working face the protruding placed side towards sleeve interior surface relative with that tilt between the head of a foot (5) that extends in protective plate and protective plate, this guard system is characterised in that, this system comprises the central floor panel (11 between some sleeves (30) that are used to be inserted in single protective plate (10) and pulverizer, 14), each base plate (11,14) apparent surface who has first type surface that the radius of curvature of the placement surface of a radius of curvature and adjacent protective plate (10) adapts and radius of curvature and sleeve radius of curvature to adapt.

2. guard system as claimed in claim 1 is characterized in that, has two dissimilar central floor panel (11,14) at least, and their difference is the radius of curvature difference of their first type surface.

3. as the described guard system in one of claim 1 or 2, it is characterized in that, form one between two first type surfaces (12,15) of each base plate (14) less than 10 ° angle [alpha].

4. as the described guard system of one of claim 1 to 5, it is characterized in that, protective plate (10) is fixed on the sleeve (30) with a set bolt (22) that passes each protective plate (10), each base plate (11,14) and sleeve (30).

5. guard system as claimed in claim 4 is characterized in that, set bolt (22) has the hemispherical nose (17) of the corresponding hemispherical groove (18) that is arranged in protective plate (10).