UA62201U - Rattler lining - Google Patents

Abstract

A rattler lining comprises mounted on an drum inner surface plates made of elastic material, preferably of rubber, with longitudinal lateral grooves, into which lifters are installed in the form of bars of elastic material joined with a wear plate. The lifter wear plate is made of wear-resistant material and mounted on the height of lifter from the side of load impact on the lifter. In the case the lifter is connected to the inner surface of mill drum by means of fastening made directly in the wear plate.

Description

where O is the inner diameter of the drum of the mill; 26. Lining of the drum mill according to paragraph 1, 25, which

K? - coefficient equal to 0.02-0.07. differs in that the angle of inclination is internal 20. Lining of the drum mill according to pp. 1, 19, which surface of the foot of the plate is equal to c-52-102, differs in that the thickness of the plate is in the middle 27. Lining of the drum mill according to pp. 1, 25, which part of No is made in accordance with the ratio - it differs in that the angle of inclination of the lateral rotation: hni of the deepening of the plate is equal to o4-:52-102,

Ni-Ke-N, I 28. Lining of a drum mill according to paragraph 1, 25, which is where H is the thickness of the drum lining plate; differs in that the angle of inclination o2 is external

Kv is a coefficient equal to 0.65-1.0. - the lower surface of the foot of the plate is equal to c2-:07-7"7, 21. Lining of the drum mill according to item 1, which differs from 29. Lining of the drum mill according to items 1, 13, which differs in that the upper surface of the plates is differs in that the height of the bevel from the working side to the flat side of the lifter Ri is made in accordance with 22. Lining of the drum mill according to item 1, which is relative: differs in that the upper surface of the plates is made EtieKv-S, on a concave where C is the height of the lifter; 23. Lining of a drum mill according to clauses 1, 22, which Ke is a coefficient equal to 0.25-0 4. differs in that the concavity of the upper floor 30. Lining of a drum mill according to clause 1 , 13, which is formed by straight planes under the slab, differs in that the height of the bevel from the non-working volume of the slope from the working surface of the slab is equal to 0"7- side of the lifter E is made in accordance with the ratio 25. 24. Lining of the drum mill according to pp. 1, 22, which is E-KvoS, differs in that the concavity of the upper floor C is the height of the lifter; hni slabs is formed by a surface with a radius K, K5 - a coefficient equal to 0-0.25. equal to 160-1500 mm. 31. Lining of a drum mill according to item 1, which is 25. Lining of a drum mill according to item 1, 19, which differs in that the height of the lifter installation differs in that the longitudinal side recesses above the plate C must satisfy the following conditions: in the plate for the installation of the lifter are made of c-Ki o, the thickness of the leg n, which is made in accordance with where 0 - the inner diameter of the drum of the mill; ratio: Ki: - coefficient equal to 0.007-0.02. PEKTON, I 32. Lining of the drum mill according to paragraph 1, 31, which where: H - the thickness of the lining plate of the mill drum; differs in that the angle of inclination of the working surface

Co is a coefficient equal to 0.1-0.3. the height of the lifter relative to the plane of the plate is equal to 902-130".

The useful model belongs to the wear-resistant material and vulcanized metallic elements used for facing with a beam and a fastening plate, with the help of the inner surfaces of ball mills, whose lifters are attached to the drum body and cut in the first stage of grinding with balls 80- watchful elements. 120 mm, and self-grinding mills, and it can be However, the lining of this design has a number of unused in mining, energy, chemical and other areas of industry for - a hard wear-resistant plate is attached to gu- processing and preparation of raw materials. language base lifter chemical or mechanical

At the mills of the first stage of crushing, the device In the process of operation, due to impact, the lining is completely made of rubber, it is impractical. of loads acting both on the plate and on

Due to high shock loads, the rubber wears out, intensive rubber wear occurs in the attack zone of the footers - around the metal plate, which leads to ki. Therefore, a combined construction of the formation of recesses in the places of metal and lining joints in a rubber-metal combination is used. Such a combination of rubber, which in the future leads to separation of the metal, allows you to make the most of the advantages of the plate and, as a result, to premature wear of each of the materials - elasticity and abrasiveness of the lining; stability of rubber and shock wear resistance of steel in the zone - metal plates have certain dimensions according to the attack of the lining. height and thickness, and according to the wear of the lifter, these

Technically, the closest analog is reduced in size, which in the future, during operation, to the declared useful model is the lining of the mill with also leads to the separation of the plate. Rubber wear-resistant lifter for lining the inner base, having lost its protective wear-resistant surface of drum mills (USSR patent layer, wears out prematurely.

Mo1829962, B02С17/22, publ. 23.07.93, prototype), the basis of a useful model is the task that includes plates installed on the inner surface due to the optimization of the design of the lining drum, plates made of elastic material, plates and improving the design of the lifter in combi-rubber, having longitudinal side recesses, nations wear-resistant rubber material to increase the reliability and efficiency of the lining in the bar

bath mills of the first stage, to avoid the rising of this surface in the area of the holes from premature defects, to increase the service life of the footers - wear. of the mill, increase productivity and reduce the time of downtime of the mill during repair work. is equal to the distance of the location of the protrusion on the

The problem is solved by the fact that the outer surface of the lifter. drum mill tip, which includes installing This allows to increase the strength of the fastening lines on the inner surface of the drum of a plate made of ela- elements that work on breaking under the influence of udastic material, mainly rubber, with a different load on the lifter's armor. longitudinal side recesses, in which the lifter can be connected to the internal lifter in the form of bars with an elastic material surface of the drum of the mill with the help of fasteners connected to the armor, according to the corral elements that are inserted into the T-shaped groove . model, the armor of the lifter is made of This connection of the lifter with the drum of sub-bearing material and installed at the height ensures the reliability of fixation of all elements of the lining of the lifter from the side of the influence of the load on the lifter, on the surface of the drum, and also ensures constant - while the lifter is connected to the internal - the presence of a fastening connection with the gradual upper part of the drum of the mill with the help of means of making the material of the armor and is a technological attachment made directly in the armor. assembling the lining of the drum of the mill.

The wear-resistant part of the lifter (armor) performs a T-shaped groove for fastening elements, it can perform two functions: it can be performed directly in the base of the armor. - protection of the lifter from shock loads, as it allows to simplify the connection from the crushed mass, and from the ball lifter with the inner surface of the drum of mli-loading; on with the help of fastening elements, which are inserted - reliable and permanent fastening of the lifter for the entire length in the T-shaped groove. period of operation of the mill. The lifter's armor can be made of wear-

The surface of the armor, which is combined with the surface of resistant high-manganese steel. bar made of elastic material, can contain from This allows to increase the perception of impact two to eight protrusions, which have transverse loads on the armor, which extends the term of its ex- cross-section trapezoidal or other shape. pluations and linings in general.

The presence of protrusions allows you to redistribute the Lifter's armor can be connected to the load bar when the surface of the lifter's armor is in contact with the lifter's armor by vulcanization. which perceives the shock load, and the surfaces of the connection of the lifter armor with the lifter beams of the lifter beam, which provides damping of the armor, by the method of vulcanization increases the manufacturability, which increases the strength of the connection of these surfaces of the manufacture and installation of the liner, as well as the service life of the liner. This will allow to protect and increase the strength of the connection of the working and non-working surface of the lifter, made of rubber, from the working parts of the lifter to increase the life of shock loads and increase the life of its operation. services The number and size of protrusions is determined. The width of lifter A can be made technologically, based on the operating conditions of the mill, according to the ratio А:К/:О, where: О is the inner diameter of the balls and dimensions of the lifter. diameter of the drum of the mill; Ki is a coefficient that

The shape of the protrusions on the non-working surface of the armor equals 0.03...0.1. allows to optimize the distribution of loads by the inventors through numerous studies of displacement during lifter operation. samples of drum mills it was established that

The armor of the lifter can have a wedge-shaped profile in cross section. drum of the mill, the number of rows of fastening holes

The profile of the armor of this shape allows the floor, the side gap, which is allowed to live between the plates, the life of the armor with a gradual drum, the width of the drum plate, and the selection of the material of the armor caused by an impact from the interval of values of 0.03... 0.1. he load on the lifter. The height of the lifter C can be made according to

The lifter can be connected to the internal according to the ratio С-К»о:О, where О is the inner surface of the mill drum with the help of fasteners - the diameter of the mill drum, and Ко - the coefficient of the elements that are inserted into the cone-shaped holes is 0, 03...0.1. good profile. The inventors experimentally also established

Such a connection of the lifter with the drum is caused by the fact that the Ko coefficient depends on the technological reliability of fixing all lining elements of the mill’s operating parameters, from the internal on the surface of the drum, and also ensures the constancy of the diameter of the drum, the diameter of the grinding bodies, the fastening of connection with a gradual increase in the rotation speed of the mill, the loading level of the armor material and is technological for the material being crushed. manufacture and assembly of the drum lining. At the same time, it was established that the angle of bevel is from the rim. side of the lifter can be selected from the range of

The holes for the fastening elements can be zone o5-252...452, and the bevel angle o4 from the non-working hundred- made directly in the armor of the lifter for the entire wound of the lifter can be selected from the range of its height. sbatO2...152,

Therefore, the placement of the fastening element on the cross-section of the armor has a height E", outside the upper surface of the lifter will provide protection that can be selected from the ratio Po:-Kz:C, where H -

lifter height; Kz is a coefficient selected from the Longitudinal side recesses in the plate for the mouth - a ratio of 0.65...1.0. lifter boots are made with a foot thickness n, which

It was established that the coefficient Kz depends on can be chosen according to the ratio P-Kae:-H, where the diameter of the grinding bodies and the loading level H is the thickness of the lining plate of the mill drum; K»e - material that is crushed. a coefficient that can be selected from a range

The width of the base of Ei's metal armor can be 0.1...0.3. to be the ratio E1-Ka:A, where A is the width. It was established that the coefficient Ko depends on the lifter, Ku, which is equal to 0.6...0.8. of the internal diameter of the drum of the mill, quantity

It was established that the Ki coefficient. depends on the rows of fastening holes of the lateral gap, which is permissible technological parameters of the mill, the diameter, between the plates on the drum. grinding bodies, the level of material loading, which At the same time, the angle of inclination of the inner surface is crushed. plate feet can be determined from the range

At the same time, the angle Dr of the inclination of the metal surface is 57...10", the angle o of the inclination of the lateral surface of the armor recess on the non-working side of the lifter can be determined from the range of 5"7...10", and early from the interval of 0" ... 15". angle og2 of the inclination of the outer (lower) surface of the leg

The surface of the armor, which is connected to the elastic material of the plate determined from the range of 0"...72. bar material, can be made wave-supporting. o:O, the face of the wave crests is determined technologically, where O is the internal diameter of the mill drum; Ko is a coefficient of the diameter, based on the operating conditions of the mill, which can be selected from the ratio of spheres and dimensions of the lifter, and can be within 2 0.007...0.02 to 8. It was established that the Kio coefficient depends on

When installing the fastening element of the upper technological parameters of the mill, from the inside, the surface of its thickening can be of the diameter of the drum, the diameter of the bodies, which is at the level of the upper surface of the lifter, and the lower level, the speed of rotation of the mill, the level of the load a surface with a cone-shaped profile, holding the material to be crushed. protects the lifter from the actions of various loads, execution of the plate construction, in accordance with the as close as possible to the lower level of the armor. of apparent ratios: plate thickness N-K; 7:O, a

The fastening element itself can have, as an option, also the thickness of the plate in its middle part Ni-Kv:H thickened part covered with rubber, which fills the angle of inclination of the working surface of the plate from the interval of the hole in the armor to the upper surface of the lifter. 02...257, will ensure its optimal configuration

The height of the bevel from the working side of the lifter Ri and will allow to derive the productivity of the mill on can be determined by the ratio Ri-Ke:C, where the calculated parameters in the shortest time,

H - lifter height; Ke is a coefficient that can, while ensuring reliable performance early from the range of 0.25...0 4. lining. The working surface of the plate, according to

At the same time, the height of the bevel from the non-working side of the specified parameters can be made differently. The lifter P is determined by the ratio ReKe:C, the profile, as indicated in Fig. 5, a straight line, or, as where H is the height of the lifter; Kv - the coefficient, which is determined in Fig. 6, concave, or, as indicated by the ratio 0...0.25. Fig. 7, curvilinear. At the same time, the concavity formed // It was established that the coefficients Kv and Ko depend on straight planes at the angle of inclination of the lake. from the technological parameters of the mill. Curvilinearity can be formed by a surface with

Lining plates made of elastic material with a radius B equal to B-160...1500 mm. must be made in accordance with the ratios: The angle of inclination of the working surface of the lifter in relation to - the thickness of the lining plate H in relation to the plane of the plate can be determined from the interval мне НеК;:О, where: О - the inner diameter of the drum uk902...1302, which provides the most favorable weather conditions; K7 is a coefficient that can be determined by the work of the lining when increasing the productivity of the ratio 0.02...0.07. those mill

It was established that the coefficient K7 can depend on the execution of the lifter in the form of a beam with a width on the technological parameters of the mill and on A, which can be determined by the ratio of the internal diameter of the mill drum; A-KIO and the height C, which can be determined (7 the thickness of the plate in the middle Ni of the part according to the ratio C-K»o:O, made with elastic- ratio Ni-Kv"N, where N is the thickness of the plate material, with the established it has the armor of the drum lining, Kv is a coefficient that can be chosen from the range of 0.65...1.0.

It was established that the coefficient K7 can depend on the difference in height of the slab, the level of loading made of wear-resistant material, for example, crushed stone material. And | resistant high-manganese steel, at the same time

At the same time, the angle of inclination of the working surface of the armor plate has holes for fastening elements of the cone and can be selected from the interval 0"...25". of a similar profile, made directly

The upper surface of the plates can be made of thickened metal armor to its entire height and flat or concave, and the concavity is formed by the height of the lifter, from the side of impact it is buried by straight planes at an angle of inclination z, the load on the lifter will allow the maximum or a surface with radius P, which is determined by using the advantages of each of the materials: range 160...1500 mm. elasticity of rubber and wear resistance of steel. The armor absorbs shock loads, and rubber acts as a damping element that absorbs shock loads, for example rubber mounted on the inner surface. Taking into account the location of the armor of the drum of the mill 2 and fixed to the body by the lifter along its height and its variable width with the help of lifters 3, made of elastic cross-section, during the operation of the mill material 4 with armor 5. Lifters Z attached to uniform wear occurs lifter, save the drum of the mill 2 with the help of fasteners, electrifying its performance until complete wear of the elements b, which are installed in the holes 7 of the metal in height and, as a result, increasing the term of the ex- armor 5. Metal armor 5, from the side of the non-working pluation of the lining. lifter shaft, has protrusions 8. As an option, lifters Z

The execution of the longitudinal side recesses can be attached to the drum of the mill 2 behind the plates with the declared parameters of the side surface with the help of fastening elements 9, which are installed and the legs and the execution of the base of the lifter in the T-shaped grooves 10 of the metal armor 5 (Fig. 4, configurations , that is, in the center of the base, there is an even segment, Fig. 10, 11). and the edges are made with a bevel, it will allow to form When rotating the drum of the mill 2, an internal tight connection between the plates and the lifter and the reliable surface of which is lined with plates 1, attached to press the plates to the body of the drum of the mill, with them to the body with the help of lifters З, spherical, excluding the pulp from getting under the slabs to the cor- loading and the material being crushed, under the mill. are lifted by the working surface of the lifter to a height,

The lining of the drum mill is presented due to the height Z of the lifter installation Z over the drawings. plate 1 and the bevel angle of the working surface ov. buckets-

Fig. 1 - a general view of the drum grinding from the side wall of the drum, the material on. shreds and bullet loads hit

Fig. 2 is a section A-A in Fig. 1, showing a fragment of the working surface of plates 1 and lifters 3. The impact of the lining of the mill with conical fastening loads is perceived by metal armor 5 elements and plates, the working surface of which lifters, which protects the rubber part of 4 lifters and made flat; plates 1 from premature wear. Metal

Fig. 3 - section AA in Fig. 1, showing the frag- armor 5 of the lifter Z has a profile that expands ment of the lining of the mill with plates, the working surface - in a cross section, therefore, as it wears out, it is made concave along the radius; lifter in height, the width of the armor increases,

Fig. 4 is a section A-A in Fig. 1, showing a fragment of the mill lining technology with T-shaped fasteners. Fasteners 6 are installed by elements; directly in metal armor and, as it wears out

Fig. 5 is a cross-section of the plate from the straightening of the lifter in height, providing forces with its working surface; constant pressing of slabs by lifters.

Fig. 6 is a cross-section of a plate with one of the During further movement of the material, which is a variant of the profile of the working surface (curvilinearly, it is crushed along a circular trajectory, it slides along the working surface of the plate 1 with the help of straight planes. by the angle of inclination ov); thanks to the fact that the plates are made of rubber, which is better

Fig. 7 is a cross-section of a plate with one of the working surfaces, and the shock loads of the profile of the working surface (curvilinearity is excluded by the lifters 3, which have armor 5, a concave surface formed by the radius of the plate in wear to a lesser extent. som K); Parameters of the proposed plate design and

Fig. 8 - a lifter, showing a variant that allows you to provide the inner surface of the lifters with protrusions and conical fastening elements, the appearance of the drum is a wavy profile, which is positive from above; affects the operating parameters of the ml-

Fig. 9 is a section B-B in Fig. 8, transverse foam. lifter section; In compliance with the design of the lining of all

Fig. 10 - a lifter, showing an option that uses T-shaped fasteners instead of the declared parameters of plates and lifters, top view; the proposed lining will allow reliable

Fig. 11 - section B-B in Fig. 10, cross-section of the working surface of the ore grinding balls - cross-section of the lifter. of mills, increase reliability and durability

The lining of the drum mill consists of the work of the lining, to increase the productivity of the mill- plates 1, made of elastic material, on.

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Ministry of Education and Science of Ukraine

State Department of Intellectual Property, str. Urytskogo, 45, Kyiv, MSP, 03680, Ukraine

SE "Ukrainian Institute of Industrial Property", str. Glazunova, 1, Kyiv - 42, 01601