Novel ore discharge sieve of ball mill

Abstract

The utility model discloses a novel ore discharge sieve of a ball mill, which comprises a steel keel, the section structure of the steel keel is conical, a frame for fixing the ore discharge sieve is formed by the steel keel, one side of the ore discharge sieve is provided with a large-caliber flange, and the large-caliber flange is detachably connected with a barrel of the ball mill. A double-spiral-line type iron plate is arranged in the ore discharging screen, the ore discharging screen on the steel keel and a circular ring arranged at the top of the steel keel are connected and fixed through keel tie bars, blades are arranged in the ore discharging screen and fixed to the steel keel double-spiral-line type iron plate through white steel screws, and the ore discharging screen is made of polyurethane materials. A plurality of hole channels are formed in the ore discharging screen, the structures of the hole channels are gradually expanded from inside to outside, the blades are of a double-end inner spiral structure, the width of the blades is 40 mm, the screw pitch of the double-end inner spiral structure is 480 mm, and the lead of the double-end inner spiral structure is 960 mm.

Description

Technical Field

[0001] The utility model belongs to the technical field of ore dressing equipment, and in particular relates to a novel ball mill ore discharging screen. Background Art

[0002] There is a screen at the discharge outlet of the ball mill, which can discharge impurities and small broken balls from the mill, and at the same time allow the ground slurry to enter the ore trough through the screen holes and enter the next selection process. The old-fashioned screens are made of 12mm steel plates drilled and rolled, and the ball mill is a continuously operating equipment. The holes of the discharge screen are washed by the slurry for a long time, which is easy to wear and has a short service life. When the screen holes are enlarged, steel balls will leak out, and broken balls and impurities will enter the process, which will affect production.

[0003] The blades inside the discharge screen wear quickly, and the slag and ball discharge effects are poor, which affects the service life; the all-steel discharge screen is heavy, the flange root is prone to cracks, and it is inconvenient to replace.

[0004] In view of the above factors, a new type of ball mill discharge screen is specially designed, which is more wear-resistant and durable, does not have the problem of hole enlargement and ball leakage, has a more firm connection, saves steel and reduces the overall weight of the discharge screen, and is convenient for maintenance and replacement. Utility Model Content

[0005] The utility model aims to provide a novel ball mill discharge screen to solve the problems raised in the above background technology.

[0006] The purpose of the utility model is achieved through the following technical solutions: a novel ball mill discharge screen, comprising a steel keel, the cross-sectional structure of the steel keel is in a cone shape, a frame for fixing the discharge screen is formed by the steel keel, a large-diameter flange is arranged on one side of the discharge screen, the large-diameter flange is detachably connected to the ball mill cylinder, a double helix iron plate is arranged inside the discharge screen, and the discharge screen on the steel keel and the circular ring arranged on the top of the steel keel are connected and fixed by keel tie bars;

[0007] Blades are arranged inside the ore discharging screen, and the blades are fixed on the double-helix iron plate of the steel keel through white steel screws.

[0008] Furthermore, the ore discharge screen is made of polyurethane material, and a plurality of channels are opened on the ore discharge screen, and the structure of the channels gradually expands from the inside to the outside.

[0009] Furthermore, the blade is a double-headed inner spiral structure, and the blade width is 40 mm.

[0010] Furthermore, the pitch of the double-start internal helical structure is 480 mm, and the lead of the double-start internal helical structure is 960 mm.

[0011] Furthermore, the ore discharge screen is formed by splicing a polyurethane arc plate with a plurality of circular holes and a steel keel.

[0012] Furthermore, the blades are arranged in a plurality of sections, and a double-headed inner spiral structure is formed by splicing the plurality of blades.

[0013] Furthermore, screw holes are arranged on the double-helix iron plate, and the double-helix iron plate is located in the ore discharge screen and can be detachably installed along the blade installation track.

[0014] Furthermore, the side where the large-diameter flange on the upper end of the ore discharge screen is located is the fixed end, and the side away from the fixed end is the free end. The blades extend between the free end and the fixed end along the axial direction of the ore discharge screen.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model redesigns the ball mill discharge screen without affecting the normal use of the mill. The discharge screen body and auger spiral blades are made of polyurethane material, which is more wear-resistant and durable, and there is no problem of hole enlargement and ball running. The flange connecting the discharge screen and the ball mill and the keel for fixing the blades are made of A3 steel, which has a more firm connection, saves steel and reduces the overall weight of the discharge screen, making it convenient for maintenance and replacement.

[0017] The screen mesh of the utility model is made of polyurethane material, which is wear-resistant, durable, rust-proof, and the discharge holes are not easy to expand; the polyurethane spiral blades are durable, reduce the number of replacements, and increase the service life; the overall weight of the discharge screen is light, and it is easy to replace and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the utility model having a double-headed inner spiral structure;

[0020] Figure 3 It is a schematic diagram of the utility model having a double helix iron plate structure;

[0021] Figure 4 It is a schematic diagram of the connection between the circular ring and the keel reinforcement of the utility model. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] like Figure 1-4 As shown, a novel ball mill discharge screen comprises a steel keel 1, the cross-sectional structure of the steel keel 1 is in a cone shape, a frame for fixing the discharge screen 2 is formed by the steel keel 1, a large-diameter flange 3 is arranged on one side of the discharge screen 2, and the large-diameter flange 3 is detachably connected to the ball mill cylinder, a double helix iron plate is arranged inside the discharge screen 2, and the discharge screen 2 on the steel keel 1 and the circular ring 4 arranged on the top of the steel keel 1 are connected and fixed by keel tie bars;

[0026] The ore discharge screen 2 is provided with blades 5 inside, and the blades 5 are fixed on the double-helix iron plate 7 of the steel keel 1 by white steel screws.

[0027] A plurality of steel keels 1 are arranged along the circumference of the ore discharge screen 2 , and a frame for fixing the ore discharge screen 2 is formed by the steel keels 1 .

[0028] In order to facilitate use, the ore discharge screen body is more wear-resistant and durable, and there is no hole expansion and ball running; the ore discharge screen 2 is made of polyurethane material, and a plurality of channels 6 are opened on the ore discharge screen 2, and the structure of the channels 6 gradually expands from the inside to the outside.

[0029] In order to facilitate the fixed form of the discharge screen 2 and the ball mill in use, the blade 5 is a double-headed internal spiral structure, the width of the blade 5 is 40mm, the pitch of the double-headed internal spiral structure is 480mm, and the lead of the double-headed internal spiral structure is 960mm.

[0030] In order to facilitate use, the main body and blades of the ore discharge screen 2 are made of new polyurethane material, which makes the overall weight of the ore discharge screen light and convenient for replacement and maintenance. The ore discharge screen 2 is spliced ​​by a polyurethane arc plate with a plurality of circular holes and a steel keel 1.

[0031] In order to replace blades of different sections according to the degree of wear of the blades during use, the blades 5 are provided in a plurality of sections, and a double-headed inner spiral structure is formed by splicing a plurality of the blades 5 .

[0032] In order to facilitate detachable replacement in use, the double-helix iron plate is provided with screw holes, and the double-helix iron plate is located in the ore discharge screen 2 and can be detachably installed along the installation track of the blade 5.

[0033] In order to facilitate the transportation of materials from the ball mill in the discharge screen 2 from the fixed end to the free end while following the rotation of the ball mill in the use state, the side where the large-diameter flange 3 on the upper end of the discharge screen 2 is located is the fixed end, and the side away from the fixed end is the free end, and the blade 5 extends along the axial direction of the discharge screen 2 between the free end and the fixed end.

[0034] The large-diameter flange is connected and fixed to the ball mill cylinder. There is a double helix iron plate in the middle with screw holes. The top of the steel keel is a ring, which makes the steel keel more stable.

[0035] The large-diameter flange and the circular ring on the steel keel are connected and fixed by 8 tie bars to determine the overall height of the discharge screen. The discharge screen is a polyurethane arc plate with several circular holes, which is fixed to the keel tie bars by white steel screws; the discharge screen is equipped with blades made of polyurethane material, which are fixed to the double-helix iron plate of the steel keel by white steel screws.

[0036] The utility model redesigns the ball mill discharge screen without affecting the normal use of the mill. The discharge screen body and auger spiral blades are made of polyurethane material, which is more wear-resistant and durable, and there is no problem of hole enlargement and ball running. The flange connecting the discharge screen and the ball mill and the keel for fixing the blades are made of A3 steel, which has a more firm connection, saves steel and reduces the overall weight of the discharge screen, making it convenient for maintenance and replacement.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A new type of ball mill discharge screen, characterized by: The invention comprises a steel keel (1), wherein the cross-sectional structure of the steel keel (1) is in a conical shape, and a frame for fixing a discharge screen (2) is formed by the steel keel (1). A large-diameter flange (3) is arranged on one side of the discharge screen (2), and the large-diameter flange (3) is detachably connected to a ball mill cylinder. A double helix-shaped iron plate (7) is arranged inside the discharge screen (2), and the discharge screen (2) on the steel keel (1) and a circular ring (4) arranged on the top of the steel keel (1) are connected and fixed by keel tie bars; The ore discharge screen (2) is provided with blades (5) inside, and the blades (5) are fixed to the double helix-shaped iron plates (7) of the steel keel (1) by means of white steel screws.

2. The novel ball mill discharge screen according to claim 1 is characterized in that: The ore discharge screen (2) is made of polyurethane material. A plurality of channels (6) are provided on the ore discharge screen (2). The structure of the channels (6) gradually expands from the inside to the outside.

3. The novel ball mill discharge screen according to claim 2 is characterized in that: The blade (5) is a double-headed inner spiral structure, and the width of the blade (5) is 40 mm.

4. The novel ball mill discharge screen according to claim 3 is characterized in that: The pitch of the double-start internal helical structure is 480 mm, and the lead of the double-start internal helical structure is 960 mm.

5. The novel ball mill discharge screen according to claim 4 is characterized in that: The ore discharge screen (2) is formed by splicing a polyurethane arc plate with a plurality of circular holes and a steel keel (1).

6. The novel ball mill discharge screen according to claim 5 is characterized in that: The blades (5) are arranged in a plurality of sections, and a double-headed inner spiral structure is formed by splicing the plurality of blades (5).

7. The novel ball mill discharge screen according to claim 6 is characterized in that: The double-helix iron plate is provided with screw holes, and the double-helix iron plate is located in the ore discharge screen (2) and can be detachably installed along the installation track of the blades (5).

8. The novel ball mill discharge screen according to claim 7 is characterized in that: The side where the large-diameter flange (3) is located at the upper end of the ore discharge screen (2) is a fixed end, and the side away from the fixed end is a free end. The blades (5) extend between the free end and the fixed end along the axial direction of the ore discharge screen (2).

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