Cylinder screen of ball mill

Abstract

The utility model discloses a drum screen of a ball mill, which relates to the technical field of overflow type ball mills, and comprises a flange, a plurality of rib plate transverse plates, a drum screen body and an inverted spiral structure plate, and the flange is used for being detachably and fixedly connected with the ball mill; one end of each rib plate transverse plate is vertically and fixedly connected with the flange, and is uniformly arranged along the circumferential direction of the flange; the drum screen body comprises a plurality of screen plates, the two ends of each screen plate are detachably and fixedly connected with the corresponding rib plate transverse plate, and ore screening openings are evenly formed in the screen plates and used for screening ore pulp. The inverted spiral structure plate is fixedly connected with the inner side of the rib plate transverse plate, in the rotating process of the inverted spiral structure plate, attached large-particle ore and / or steel balls overflowing into the drum screen body from the ball mill can be rotated back into the ball mill, the structure is simple, and abrasion of the large-particle ore and the steel balls to the drum screen is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of overflow ball mills, in particular to a cylindrical screen of a ball mill. Background Art

[0002] The ball mill is a key device for grinding crushed ore and is widely used in industries such as mineral processing, building materials, and chemical engineering. At present, the frame and screen plate of the cylindrical screen of the ball mill are both made of Q235 steel, and the screen plate is stamped from 14mm Q235 ordinary steel. Since the screen plate is made of 14mm Q235 ordinary steel, it does not have wear resistance, and its service life is about 3 months. After the screen plate is worn out, equipment such as slurry pumps in the next process will be damaged. When the screen plate of the cylindrical screen is damaged, the entire cylindrical screen is in a scrapped state, resulting in high equipment maintenance costs and high labor intensity. After large-particle ore and steel balls in the ball mill overflow into the cylindrical screen, the large-particle ore and steel balls will accelerate the wear of the screen plate of the cylindrical screen. Content of the Utility Model

[0003] The purpose of the utility model is to provide a cylindrical screen of a ball mill to solve the problems existing in the above-mentioned prior art, with a simple structure and effectively avoiding the wear of the cylindrical screen by large-particle ore and steel balls.

[0004] To achieve the above purpose, the utility model provides the following scheme:

[0005] The utility model provides a cylindrical screen of a ball mill, including: a flange, a plurality of ribbed horizontal plates, a cylindrical screen body, and an anti-helical structure plate. The flange is used for detachably and fixedly connecting with the ball mill; one end of each ribbed horizontal plate is vertically and fixedly connected with the flange and is uniformly arranged along the circumference of the flange; the cylindrical screen body includes a plurality of screen plates, and both ends of each screen plate are detachably and fixedly connected with one ribbed horizontal plate. The screen plate is provided with evenly arranged ore screening openings for screening ore pulp; the anti-helical structure plate is fixedly connected to the inner side of the ribbed horizontal plate, and during rotation, the anti-helical structure plate can rotate large-particle ore and / or steel balls carried by the overflow of the ball mill into the cylindrical screen body back into the ball mill.

[0006] Preferably, it further includes a plurality of ribbed vertical plate ring groups, and each ribbed vertical plate ring group is evenly arranged in the length direction of the ribbed horizontal plate and is welded and fixed to each ribbed horizontal plate.

[0007] Preferably, the ribbed vertical plate ring group includes a plurality of ribbed vertical plates, and both ends of each ribbed vertical plate are welded and fixed to the ribbed horizontal plate, and the plurality of ribbed vertical plates enclose a ring shape.

[0008] Preferably, the number of the ribbed horizontal plates is six, and the six ribbed horizontal plates are evenly arranged in the circumference of the flange.

[0009] Preferably, the ribbed plate cross plate includes a ribbed plate cross plate body and a connecting plate. The ribbed plate cross plate body is vertically fixed to the middle of the connecting plate, and one side of the connecting plate away from the ribbed plate cross plate body is used for welding and fixing with the anti-helical structure plate.

[0010] Preferably, it further includes a plurality of countersunk head bolts and nuts. The bottom of each countersunk head bolt is used for welding and fixing with one side of the connecting plate close to the ribbed plate cross plate body. The top of the countersunk head bolt is used to pass through the ore screening opening and threadedly connect with the nut to fix the screening plate.

[0011] Preferably, the countersunk head bolts on one connecting plate are symmetrically arranged with respect to the ribbed plate cross plate body corresponding to the connecting plate.

[0012] Preferably, 36 through holes are evenly arranged in the circumferential direction of the flange, and the flange and the ball mill are connected by M36 bolts.

[0013] Preferably, the anti-helical structure plate is made of a steel plate with a thickness of 12 - 15 mm and a height of 150 - 200 mm.

[0014] Preferably, the screening plate is made of polyurethane material, and the thickness of the screening plate is 16 mm.

[0015] The present utility model has achieved the following technical effects compared with the prior art:

[0016] The present utility model provides a ball mill cylindrical screen, which is connected to the ball mill through a flange, and the ribbed plate cross plate is fixedly connected to the flange, and the cylindrical screen body is connected to the ribbed plate cross plate. The ore screening opening on the cylindrical screen body can screen the pulp overflowing from the ball mill into the cylindrical screen body. By setting the anti-helical structure plate, the large particle ores and / or steel balls attached to the pulp overflowing from the ball mill into the cylindrical screen body can be rotated back into the ball mill, which well solves the problems of sticky balls and blocked balls of the cylindrical screen, and can effectively reduce the wear of the large particle ores and / or steel balls on the cylindrical screen body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a structural cross-sectional view of the ball mill cylindrical screen provided by the present utility model;

[0019] Figure 2 is Figure 1 the enlarged view of the part A in

[0020] Figure 3 the front elevation half-sectional view of the cylindrical screen of the present utility model

[0021] In the figure: 1. flange; 2. transverse rib plate; 21. transverse rib plate body; 22. connecting plate; 3. sieve plate; 4. anti-spiral structure plate; 5. vertical rib plate; 6. ore screening opening Specific embodiments

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model

[0023] The purpose of the present utility model is to provide a cylindrical screen for a ball mill to solve the problems existing in the above-mentioned prior art, with a simple structure and effectively avoiding the wear of the cylindrical screen by large-particle ores and steel balls

[0024] To make the above-mentioned objects, features and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments

[0025] The present utility model provides a cylindrical screen for a ball mill, as Figures 1 to 3As shown in the figure, it includes: a flange 1, a plurality of ribbed transverse plates 2, a cylindrical screen body, and a reverse spiral structure plate 4. The flange 1 is used for detachably and fixedly connecting with a ball mill; one end of each ribbed transverse plate 2 is vertically and fixedly connected to the flange 1 and is evenly arranged along the circumference of the flange 1; the cylindrical screen body includes a plurality of screen plates 3, and both ends of the screen plate 3 are respectively detachably and fixedly connected to a ribbed transverse plate 2. The screen plate 3 is provided with evenly arranged ore screening openings 6, and the ore screening openings 6 are used for screening ore pulp; the reverse spiral structure plate 4 is fixedly connected to the inner side of the ribbed transverse plate 2, and during rotation, the reverse spiral structure plate 4 can rotate large-particle ores and / or steel balls carried in the overflow of the ball mill into the cylindrical screen body back into the ball mill. It is connected to the ball mill through the flange 1, and the ribbed transverse plate 2 is fixedly connected to the flange 1, and the cylindrical screen body is connected to the ribbed transverse plate 2. The ore screening openings 6 on the cylindrical screen body can screen the ore pulp flowing into the cylindrical screen body from the overflow of the ball mill. By setting the reverse spiral structure plate 4, the large-particle ores and / or steel balls carried in the ore pulp flowing into the cylindrical screen body from the overflow of the ball mill can be rotated back into the ball mill, which well solves the problems of ball sticking and ball blocking of the cylindrical screen and can effectively reduce the wear of the cylindrical screen body by large-particle ores and / or steel balls.

[0026] In a preferred embodiment, the ball mill cylindrical screen further includes a plurality of ribbed vertical plate ring groups. Each ribbed vertical plate ring group is evenly arranged in the length direction of the ribbed transverse plate 2 and is fixedly welded to each ribbed transverse plate 2. The ribbed vertical plate ring group can support the ribbed transverse plate 2.

[0027] In a preferred embodiment, the ribbed vertical plate ring group includes a plurality of ribbed vertical plates 5. Both ends of each ribbed vertical plate 5 are respectively fixedly welded to the ribbed transverse plate 2, and the plurality of ribbed vertical plates 5 enclose a ring shape. The structure is simple and easy to manufacture. The ribbed vertical plate 5 is made of a 12-mm-thick iron plate.

[0028] In a preferred embodiment, the number of ribbed transverse plates 2 is six, and the six ribbed transverse plates 2 are evenly arranged in the circumferential direction of the flange 1. The structure is simple.

[0029] In a preferred embodiment, the ribbed transverse plate 2 includes a ribbed transverse plate body 21 and a connecting plate 22. The ribbed transverse plate body 21 is vertically and fixedly connected to the middle of the connecting plate 22. The side of the connecting plate 22 away from the ribbed transverse plate body 21 is used for fixedly welding with the reverse spiral structure plate 4. The structure is simple. The ribbed transverse plate 2 is made of a 20-mm-thick iron plate with a width of 200 - 300 mm.

[0030] In a preferred embodiment, the ball mill cylindrical screen further includes a plurality of countersunk bolts and nuts. The bottom of each countersunk bolt is used for fixedly welding with the side of the connecting plate 22 close to the ribbed transverse plate body 21. The top of the countersunk bolt is used for passing through the ore screening opening 6 and being threadedly connected with the nut to fix the screen plate 3. The structure is simple and it is convenient to disassemble and replace the screen plate 3.

[0031] In a preferred embodiment, the countersunk bolts on a connecting plate 22 are symmetrically arranged with respect to the rib plate cross plate body 21 corresponding to the connecting plate 22, with a simple structure and ensuring balanced force.

[0032] In a preferred embodiment, 36 through holes are evenly arranged in the circumferential direction of the flange 1, and the flange 1 and the ball mill are connected by M36 bolts through the through holes.

[0033] In a preferred embodiment, the anti-spiral structure plate 4 is made of a steel plate with a thickness of 12 - 15 mm and a height of 150 - 200 mm.

[0034] In a preferred embodiment, the sieve plate 3 is made of polyurethane. The thickness of the sieve plate 3 is 16 mm. The polyurethane material has wear resistance and elasticity and is non-magnetic, which well solves the problems of the sieve plate 3 sticking to and blocking balls. And it can be replaced piece by piece, reducing the spare part cost.

[0035] Specific examples are applied in the present utility model to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A cylindrical sieve for a ball mill, characterized in that: Comprising: A flange for detachably and fixedly connecting with a ball mill; A plurality of ribbed cross plates, one end of each ribbed cross plate is perpendicularly and fixedly connected to the flange and is evenly arranged along the circumference of the flange; A cylindrical screen body, the cylindrical screen body comprises a plurality of screen plates, both ends of the screen plate are respectively detachably and fixedly connected to one of the ribbed cross plates, the screen plate is provided with evenly arranged ore screening openings for screening ore pulp; And An anti - spiral structure plate, the anti - spiral structure plate is fixedly connected to the inner side of the ribbed cross plate, and during rotation, the anti - spiral structure plate can rotate large - particle ores and / or steel balls attached in the ore pulp overflowing from the ball mill into the cylindrical screen body back into the ball mill.

2. The cylindrical screen of the ball mill according to claim 1, characterized in that: It further comprises a plurality of ribbed vertical plate ring groups, each ribbed vertical plate ring group is evenly arranged in the length direction of the ribbed cross plate and is welded and fixed to each ribbed cross plate.

3. The cylindrical screen of the ball mill according to claim 2, wherein: The ribbed vertical plate ring group comprises a plurality of ribbed vertical plates, both ends of each ribbed vertical plate are respectively welded and fixed to the ribbed cross plate, and the plurality of ribbed vertical plates enclose a ring.

4. The cylindrical screen of the ball mill according to claim 3, characterized in that: The number of the ribbed cross plates is six, and the six ribbed cross plates are evenly arranged in the circumference of the flange.

5. The cylindrical screen of the ball mill according to claim 4, characterized in that: The ribbed cross plate comprises a ribbed cross - plate body and a connecting plate, the ribbed cross - plate body is perpendicularly fixed to the middle of the connecting plate, and the side of the connecting plate away from the ribbed cross - plate body is used for welding and fixing with the anti - spiral structure plate.

6. The cylindrical sieve of the ball mill according to claim 5, characterized in that: It further comprises a plurality of countersunk head bolts and nuts, the bottom of each countersunk head bolt is used for welding and fixing with the side of the connecting plate close to the ribbed cross - plate body, and the top of the countersunk head bolt is used for passing through the ore screening opening and being threadedly connected with the nut to fix the screen plate.

7. The cylindrical screen of the ball mill according to claim 6, characterized in that: The countersunk head bolts on one connecting plate are symmetrically arranged with respect to the ribbed cross - plate body corresponding to the connecting plate.

8. The cylindrical screen of the ball mill according to claim 1, characterized in that: 36 through-holes are evenly arranged in the circumferential direction of the flange. The through-holes connect the flange and the ball mill with M36 bolts.

9. The cylindrical sieve of the ball mill according to claim 1, characterized in that: The anti - spiral structure plate is made of a steel plate with a thickness of 12 - 15 mm and a height of 150 - 200 mm.

10. The cylindrical screen of the ball mill according to claim 1, characterized in that: The screen plate is made of polyurethane material and has a thickness of 16 mm.

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