Magnetic lining plate structure of ball mill end cover

Abstract

The utility model relates to a magnetic lining plate structure of a ball mill end cover, which comprises an end cover, a steel plate cushion layer is fixed on the inner side of the end cover, the steel plate cushion layer is formed by encircling and splicing a plurality of groups of fan-shaped steel plates, a magnetic lining plate is laid on the outer side of the steel plate cushion layer, and the magnetic lining plate is also formed by encircling and splicing a plurality of groups of fan-shaped lining plates. Each group of fan-shaped lining plates are adaptively magnetically attracted on the corresponding fan-shaped steel plates, limiting check rings are arranged on the outer sides of the magnetic lining plates, each limiting check ring comprises blocking teeth, the blocking teeth incline inwards and are downwards arranged between the adjacent fan-shaped lining plates, the blocking teeth are used for attaching and pressing the fan-shaped lining plates on the steel plate cushion layer, and the limiting check rings are fixedly connected with the end cover. The adjacent fan-shaped lining plates are pressed on the fan-shaped steel plate in an attached mode through the blocking teeth of the limiting check rings, so that on the basis that the fan-shaped lining plates are magnetically attracted to the fan-shaped steel plate, the situation that the fan-shaped lining plates are separated from the fan-shaped steel plate is prevented, and it is guaranteed that the whole end cover is firm in structure and long in service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of industrial equipment, especially relates to a magnetic lining structure of ball mill end cover. BACKGROUND

[0002] Ball mill is a commonly used grinding or grinding equipment. Ball mill is composed of horizontal slow rotation cylinder, and the inside is loaded with spherical grinding body (steel ball, zirconia ball, alumina ball, pebble or porcelain ball). It is divided into overflow type, lattice type and peripheral type according to the ore drawing mode, divided into cylindrical type, conical type and multi-edge type according to the cylinder shape, and divided into short cylinder type, long cylinder type and tube mill according to the cylinder length-diameter ratio. It has the advantages of simple structure, strong adaptability, and is mainly applied to cement, silicate products, new building materials, refractory materials, chemical fertilizers, black and non-ferrous metal ore dressing and glass ceramic production industries.

[0003] The working principle is that when the cylinder rotates, the spherical grinding body is lifted due to the friction of the inner wall of the cylinder, and when the lifting angle exceeds the rest angle, the grinding body falls down. The material is crushed by the impact of the falling grinding body and the grinding action between the grinding body and the inner wall of the cylinder.

[0004] At present, in the production process, the ball mill uses manganese alloy wear-resistant lining plate, one set of lining plate needs to be replaced every year for one-stage mill, and two sets of lining plate need to be replaced every year for two-stage mill. The wear is uneven, although most of the lining plate is worn more than half, the end cover lining plate is worn out, the short board effect appears, the lining plate has to be replaced, unnecessary loss is caused, the economic benefit is poor, and the maintenance cost is high. UTILITY MODEL CONTENTS

[0005] Therefore, the purpose of the utility model is to provide a magnetic lining structure of ball mill end cover, which is more durable than conventional manganese alloy wear-resistant lining plate and is convenient to replace after wear.

[0006] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a magnetic lining structure of ball mill end cover, which comprises an end cover, a steel plate cushion layer is fixed inside the end cover, and the steel plate cushion layer is composed of a plurality of groups of fan-shaped steel plates which are spliced around.

[0007] A magnetic lining plate is laid on the outside of the steel plate cushion layer, and the magnetic lining plate is also composed of a plurality of groups of fan-shaped lining plates which are spliced around, and each group of fan-shaped lining plates is adapted to be magnetically attracted to the corresponding fan-shaped steel plate.

[0008] A limiting check ring is arranged on the outside of the magnetic lining plate, the limiting check ring comprises a check tooth, the check tooth is inclined inward and downward arranged between adjacent fan-shaped lining plates, the check tooth is used to press the fan-shaped lining plate on the steel plate cushion layer, and the limiting check ring is fixedly connected with the end cover.

[0009] The beneficial effects of the above technical scheme are: the magnetic lining uses the magnet attraction principle to adsorb a layer of metal powder on the inner wall of the ball mill, which avoids the friction between the steel balls and the inner wall of the ball mill, thus greatly prolonging the service life of the inner wall lining, and the service life of the magnetic lining is usually 3 to 4 times that of the manganese steel lining, so the replacement of the magnetic lining ball mill end cover is more durable, the conventional ball mill end cover has poor magnetic attraction performance, and the addition of a steel plate pad layer can stably magnetically attract the magnetic lining on the steel plate pad layer, thereby fixing the position of the end cover lining, and the limiting check ring further strengthens the connection strength of the magnetic lining and the end cover, preventing the magnetic lining from being offset due to long-term use.

[0010] Further, the outer diameter of the limiting check ring is smaller than the outer diameter of the edge of the end cover, a plurality of groups of through connecting holes are arranged on the limiting check ring in the circumferential direction, corresponding threaded holes are arranged on the edge of the end cover, and threaded bolts are threadedly connected in the threaded holes through the connecting holes of the limiting check ring.

[0011] Beneficial effects: provide a fixing method of the limiting check ring, the limiting check ring can be fixedly connected with the edge of the end cover, and the check teeth press the sector-shaped lining to tightly connect the sector-shaped lining with the end cover, preventing the sector-shaped lining from being separated from the end cover.

[0012] Further, an annular positioning groove is arranged on the outer vertical surface of the end cover at the inner side end of the discharge port, and the end portions of the sector-shaped steel plate and the sector-shaped lining close to the discharge port are jointly in contact with the positioning groove.

[0013] Beneficial effects: on the one hand, the positioning groove can limit the sector-shaped steel plate and the sector-shaped lining in the feeding and discharging directions, and on the other hand, the positioning groove can facilitate the installation and positioning of the sector-shaped steel plate and the sector-shaped lining.

[0014] Further, protrusions and grooves are arranged on the left and right sides of the sector-shaped lining, and the protrusions of the sector-shaped lining are adaptively connected with the grooves of the adjacent sector-shaped lining.

[0015] Beneficial effects: on the basis of the magnetic attraction connection of the sector-shaped lining and the sector-shaped steel plate, the stability of the entire magnetic lining is further increased through the adjacent pressing, the sector-shaped lining is pressed by the protrusions of the adjacent sector-shaped lining when it is separated from the sector-shaped steel plate, and the circumferential connection can form a complete and force-bearing whole.

[0016] Further, the sector-shaped steel plate is fixed to the inner side of the end cover through a screw rod and a nut, through holes are arranged on the sector-shaped steel plate and the end cover in correspondence, the screw rod penetrates the through holes of the sector-shaped steel plate and the end cover from the inside in sequence, and the nut is threadedly connected with the protruding screw rod from the outer side of the end cover.

[0017] Beneficial effects: provide a fixing method of the sector-shaped steel plate.

[0018] Further, the outer side of the fan-shaped lining plate is provided with wear-resistant protrusions along the extending direction of the lining plate.

[0019] Beneficial effect: the wear-resistant protrusions can increase the impact frequency of the material close to the lining plate, thereby improving the grinding efficiency of the ball mill.

[0020] Further, the wear-resistant protrusions are conical structures with large outer diameter and small inner diameter.

[0021] Beneficial effect: the closing structure of the end cover discharge facilitates the discharge of the material located at the edge of the end cover from the discharge port.

[0022] Further, the gap between the magnetic lining plate and the end cover is filled with epoxy resin AB dry hanging glue.

[0023] Beneficial effect: on the one hand, the connection between the lining plate and the end cover is more closely fitted, and on the other hand, the lining plate in contact with the material has no concave gap, preventing the material from remaining in the ball mill. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic view of the utility model;

[0025] Figure 2 is a front plan view; Figure 1

[0026] Figure 3 is a structural schematic view of the limiting stop ring;

[0027] Figure 4 is a plan view with the limiting stop ring removed; Figure 2

[0028] is a structural schematic view of the fan-shaped lining plate; Figure 5

[0029] is a plan view with the magnetic lining plate removed; Figure 6 Figure 4 is a structural schematic view of the end cover;

[0030] Figure 7 In the figure: 1-end cover, 2-fan-shaped steel plate, 3-fan-shaped lining plate, 4-discharge port, 5-screw rod, 6-nut, 7-limiting stop ring, 8-bolt, 10-stop tooth, 31-bump, 33-wear-resistant protrusion, 101-threaded hole, 102-fixing hole, 203-connection hole, 301-groove, 302-butting groove, 401-positioning groove.

[0031] DETAILED DESCRIPTION The magnetic lining plate structure of the end cover of the ball mill is further described in detail below in combination with the drawings and specific embodiments.

[0032] ​​​

[0033] As Figures 1-7 shown, the utility model discloses a kind of magnetic lining structure of ball mill end cover, including end cover 1, steel plate mat layer is fixed in end cover 1 inside, steel plate mat layer is by a plurality of sets of fan-shaped steel plate 2 around spliced, the outside of steel plate mat layer is paved with magnetic lining, magnetic lining is also by a plurality of sets of fan-shaped lining 3 around spliced, each set of fan-shaped lining 3 is adapted to be attracted on corresponding fan-shaped steel plate 2, the outside of magnetic lining is provided with limit stop ring 7, limit stop ring 7 includes stop tooth 10, stop tooth 10 is inclined inward and downward and is arranged between adjacent fan-shaped lining 3, stop tooth 10 is used to press fan-shaped lining 3 on steel plate mat layer, limit stop ring 7 is fixedly connected with end cover 1, when fan-shaped lining 3 is spliced, the fan-shaped lining 3 between adjacent is pressed on fan-shaped steel plate 2 by the stop tooth 10 of limit stop ring 7, so that, on the basis that fan-shaped lining 3 is magnetically attracted on fan-shaped steel plate 2, prevent the situation that fan-shaped lining 3 is separated from fan-shaped steel plate 2 occurs, ensure that the whole end cover 1 structure is firm, with long service life.

[0034] In the embodiment, limit stop ring 7 is provided with a plurality of sets of through connecting holes 203 in circumferential direction, corresponding threaded hole 101 is formed on the edge of end cover 1, threaded bolt 8 is screwed in threaded hole 101 through connecting hole 203 of limit stop ring 7, so as to fix limit stop ring 7 on end cover 1, and the outer diameter of limit stop ring 7 is less than the outer diameter of the edge of end cover 1, the part of end cover 1 beyond limit stop ring 7 is used to provide the connecting space of end cover 1 and ball mill barrel.

[0035] In the embodiment, annular positioning groove 401 is formed on the outer vertical surface of the end part of discharge port 4 of end cover 1, the end part of fan-shaped steel plate 2 close to discharge port 4 is in contact with positioning groove 401, positioning groove 401 can facilitate the installation and positioning of fan-shaped steel plate 2, fan-shaped steel plate 2 is fixed on the inside of end cover 1 through screw rod 5 and nut 6, corresponding through fixing hole 102 is formed on fan-shaped steel plate 2 and end cover 1, screw rod 5 penetrates fixing hole 102 of fan-shaped steel plate 2 and end cover 1 from inside in turn, nut 6 is screwed with protruding screw rod 5 from the outside of end cover 1; Butt joint groove 302 is formed on the end part of fan-shaped lining 3 close to discharge port 4, the groove wall of butt joint groove 302 is also in contact with positioning groove 401, positioning groove 401 can limit fan-shaped lining 3 in the direction of feeding and discharging, prevent fan-shaped lining 3 from separating from end cover 1 in the direction of feeding and discharging, ensure that fan-shaped steel plate 2 and fan-shaped lining 3 are firmly connected on end cover 1.

[0036] In the embodiment, the protrusions 31 and the grooves 301 are arranged on the left and right sides of the sector-shaped lining plate 3, the protrusions 31 of the sector-shaped lining plate 3 are adapted to be clamped with the grooves 301 of the adjacent sector-shaped lining plate 3, and the stability of the entire magnetic lining plate is further increased through the pressure bonding of the adjacent sector-shaped lining plate 3 on the basis of the magnetic attraction of the sector-shaped lining plate 3, each sector-shaped lining plate 3 is blocked by the protrusions 31 of the adjacent sector-shaped lining plate 3 when it is separated from the sector-shaped steel plate 2, so that the entire magnetic lining plate forms a complete force-receiving whole; the wear-resistant protrusions 33 are arranged on the outer side of the sector-shaped lining plate 3 along the extension direction of the lining plate, the wear-resistant protrusions 33 are conical structures with large outer diameter and small inner diameter, the conical design is matched with the closing structure of the discharge of the end cover 1, the material located at the edge of the end cover 1 is conveniently discharged from the discharge port 4, and the material in the ball mill continuously collides on the wear-resistant protrusions 33 when being close to the end cover 1, so that the collision frequency of the material in the ball mill is increased, and the grinding efficiency of the ball mill is improved.

[0037] In the embodiment, the gap between the magnetic lining plate and the end cover 1 is filled with epoxy resin AB dry hanging glue, on the one hand, the connection between the lining plate and the end cover 1 is more closely matched, and on the other hand, it is ensured that there is no concave gap on the lining plate in contact with the material, so that the material is prevented from being retained in the ball mill for a long time through the gap.

[0038] In use, first, the end cover 1 is disassembled, after the inner side of the end cover 1 is cleaned, one end of the sector-shaped steel plate 2 close to the discharge port 4 is abutted in the positioning groove 401 of the discharge port 4, then the sector-shaped steel plate 2 is fixed on the end cover 1 by using the screw rod 5 and the nut 6, the entire steel plate cushion layer is fixed in sequence, then the sector-shaped lining plate 3 is magnetically attracted on the sector-shaped steel plate 2, it is needed to pay attention that the groove wall of the butt joint groove 302 of the sector-shaped lining plate 3 is also adapted to be abutted in the positioning groove 401, then the entire magnetic lining plate is placed in sequence through the protrusions 31 and the grooves 301 of the sector-shaped lining plate 3, then the limiting block ring 7 is fixed, the blocking teeth 10 of the limiting block ring 7 are pressed between the adjacent sector-shaped lining plates 3, the limiting block ring 7 is fixed on the edge of the end cover 1 by using the bolt 8, and the magnetic lining plate structure of the entire end cover 1 is fixed.

[0039] The magnetic lining plate structure of the ball mill end cover has the following advantages: first, the conventional manganese alloy lining plate of the ball mill end cover 1 is replaced by a more durable magnetic lining plate, the service life of the lining plate of the end cover 1 is improved, and the maintenance frequency of the ball mill end cover 1 is reduced; second, the magnetic lining plate of the end cover 1 adopts a circumferential splicing mode, has a plurality of sector-shaped lining plates 3, and when uneven wear of the lining plate occurs, the sector-shaped lining plates 3 can be replaced individually, and the material cost is reduced; third, the limiting block ring 7 is additionally arranged on the end cover 1, the magnetic attraction position of the sector-shaped lining plate 3 can be fixed, the installation of the magnetic lining plate is stable, and meanwhile, the sector-shaped steel plate 2 and the sector-shaped lining plate 3 are detachably connected, so that maintenance and replacement are facilitated.

[0040] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A magnetic liner structure for a ball mill end cap, characterized by, Including end cover (1), the inner side of end cover (1) is fixed steel plate cushion, and the steel plate cushion is formed by surrounding and splicing several groups of sector steel plates (2); The outer side of steel plate cushion is paved with magnetic lining plate, and the magnetic lining plate is also formed by surrounding and splicing several groups of sector lining plates (3), and each group of sector lining plates (3) is adapted to be magnetically attracted on the corresponding sector steel plate (2); The outer side of magnetic lining plate is provided with a limiting stop ring (7), the limiting stop ring (7) comprises a stop tooth (10), the stop tooth (10) is inclined inward and downward arranged between adjacent sector lining plates (3), the stop tooth (10) is used to press the sector lining plate (3) on the steel plate cushion, and the limiting stop ring (7) is fixedly connected with the end cover (1).

2. A magnetic liner structure for a ball mill end cap according to claim 1, characterised in that, The outer diameter of the limiting stop ring (7) is smaller than the outer diameter of the edge of the end cover (1), the limiting stop ring (7) is spaced apart in the circumferential direction and is provided with several groups of through connecting holes (203), the edge of the end cover (1) is provided with corresponding threaded holes (101), and the threaded bolts (8) are threaded connected in the threaded holes (101) through the connecting holes (203) of the limiting stop ring (7).

3. A magnetic liner structure for an end cover of a ball mill according to claim 1 or 2, characterized in that The inner side end of the discharge port (4) of the end cover (1) is provided with an annular positioning groove (401) along the outer vertical surface of the end, and the sector steel plate (2) and the sector lining plate (3) are jointly abutted in the positioning groove (401) near the end of the discharge port (4).

4. A magnetic liner structure for a mill end cover according to claim 1 or 2, characterized in that The left and right sides of the sector lining plate (3) are provided with protrusions (31) and recesses (301), and the protrusions (31) of the sector lining plate (3) are adapted to be connected with the recesses (301) of the adjacent sector lining plate (3).

5. A magnetic liner structure for an end cover of a ball mill according to claim 1 or 2, characterized in that The sector steel plate (2) is fixed in the inner side of the end cover (1) through the screw rod (5) and the nut (6), the sector steel plate (2) and the end cover (1) are provided with through fixing holes (102), the screw rod (5) penetrates the fixing holes (102) of the sector steel plate (2) and the end cover (1) in sequence from the inside, and the nut (6) is threaded connected with the protruding screw rod (5) from the outer side of the end cover (1).

6. A magnetic liner structure for a mill end cover according to claim 1 or 2, characterized in that The outer side of the sector lining plate (3) is provided with wear-resistant protrusions (33) along the extension direction of the lining plate.

7. A magnetic liner structure for a ball mill end cap according to claim 6, characterised in that, The wear-resistant protrusions (33) are conical structures with large outer diameter and small inner diameter.

8. A magnetic liner structure for an end cap of a ball mill according to claim 1 or 2, characterized in that The gap between the magnetic lining plate and the end cover (1) is filled with epoxy resin AB dry hanging glue.

Images