Safety device for preventing ore leakage of large gear of ball mill

Abstract

The utility model relates to a big gear ore leakage safety protection device of ball mill, including big gear, big gear oil baffle and safety shield, its characterized in that, on the inside of big gear oil baffle, equal division is equipped with the protection vertical board, forms double vertical solid oil baffle, the safety shield of the utility model is installed in the outer end of big gear of ball mill, and the shield is three vertical shields, which is composed of shield cover body, two solid vertical boards of setting in the inside of shield cover body upper portion and one mesh outer plate, and the angle steel short side of double vertical solid oil baffle and protection vertical board are inserted into three verticals of safety shield respectively, and in the axial direction, it is spaced and is distributed uniformly, and in the radial direction, it is staggered and set up up and down, the utility model has the advantages that: big gear safety shield adopts three vertical shield and the double vertical solid oil baffle structure matched with it, makes big gear both sides form a labyrinth seal structure, improves the lubrication condition of big gear, prolongs the service life of big gear, and stabilizes the ball mill operation.

Description

Technical Field

[0001] This utility model relates to the field of mineral processing equipment technology, and in particular to a safety protection device for ore leakage from the large gear of a ball mill. Technical Background

[0002] Ball mills are key equipment in large-scale beneficiation plants. Medium and large-sized ball mills are generally equipped with oil baffles and safety guards. The oil baffles are usually made of rolled angle steel and are fixed to the two end faces of the large gear shaft by bolts or welding. They move and rotate with the large gear. Their main function is to prevent the grease on the large gear from being directly thrown out. The main function of the large gear safety guard is to enclose the large gear and the oil baffles on both sides, ensuring that the rotating parts such as the large gear and the oil baffles are inside the large gear safety guard when the equipment is running.

[0003] The existing design of the large gear oil baffle and safety guard involves installing a single-layer oil baffle on the large gear, while the safety guard is designed with double solid vertical edges on each side of the large gear.

[0004] When abnormalities such as broken liner plates or broken bolts occur in the end cover liner or cylinder liner of the ball mill, ore leakage often occurs. The slurry leaking from the part that is close to the axial distance of the large gear may flow radially along the outer surface of the end cover to the oil baffle ring as the equipment is running. Then, it will flow through the axial and radial gaps between the oil baffle ring and the safety guard of the large gear, successively across the vertical edge of the oil baffle ring and the inner vertical edge of the safety guard of the large gear, and enter the end face and tooth surface of the large gear of the ball mill and the large gear cover. It will also enter the meshing point of the large and small gears as they mesh. With the accumulation of slurry in the safety guard of the large gear (because there is a certain amount of lubricating oil accumulated in the safety guard of the large gear, which has a strong adhesion effect on the slurry), the teeth of the large and small gears will be aggravated by the slurry wear and pitting, which often threatens the stable operation of the ball mill. Utility Model Content

[0005] In view of the problems existing in the prior art, this utility model provides a ball mill large gear leakage safety protection device, which can not only ensure that leakage ore does not enter the large and small gears, but also ensure the safety protection function.

[0006] The objective of this utility model is achieved through the following technical solution: This utility model discloses a safety protection device for ore leakage from a ball mill's large gear, comprising a large gear, oil-blocking rings disposed on both ends of the large gear, and a safety guard with a circular inner edge. The oil-blocking rings are made of unequal-sided angle steel fixed to both ends of the large gear. The device is characterized by having protective vertical plates of equal height to the short side of the angle steel evenly distributed along the long side (horizontal side) of the inner angle steel of the oil-blocking ring, forming a double-sided solid oil-blocking ring with the short side of the angle steel and the protective vertical plates. The safety guard is installed on the outer end of the ball mill's large gear, with its axial ends symmetrically distributed along the radial centerline of the ball mill's large gear. The safety guard consists of three vertical guards, comprising a guard body, two solid vertical plates disposed on the upper inner side of the guard body, and a mesh outer plate. The short sides of the angle steel and the protective vertical plates of the double-sided solid oil-blocking ring are inserted into grooves formed between the three vertical edges of the safety guard, evenly spaced axially and staggered radially.

[0007] Preferably, the two inner solid upright plates are composed of an inner solid upright plate and an outer solid upright plate, and the outer mesh plate is composed of a horizontal mesh extending outward along the short side of the angle steel and a vertical mesh connected perpendicularly to the horizontal mesh extending outward.

[0008] Preferably, the inner protective plate of the large gear oil baffle is positioned in the gap between the two solid plates of the safety cover, and the edge diameter of the outer protective plate is larger than the diameter of the two solid plates of the safety cover.

[0009] Compared with the prior art, the beneficial effects of this utility model are: Because the large gear safety guard of this utility model adopts a three-sided protective cover and a matching double-sided solid oil baffle ring structure, each side of the large gear has a total of five layers of vertical edges that are evenly distributed in the axial direction and staggered in the radial direction, forming a labyrinth-like sealing structure. This prevents ore leakage from the ball mill from entering the tooth surface and meshing area of ​​the large and small gears, improves the lubrication of the large and small gears, extends the service life of the large and small gears, and stabilizes the operation of the ball mill. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 for Figure 1 Enlarged view of part A. Detailed Implementation

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] like Figures 1-2 As shown, this utility model discloses a ball mill large gear leakage safety protection device, comprising a large gear 1, a large gear oil baffle ring 2 disposed on both end faces of the large gear 1, and a safety protective cover 3 with a circular inner edge. The large gear oil baffle ring 2 is made of unequal-sided angle steel fixed to both end faces of the large gear 1. The large gear oil baffle ring 2 is installed on the end faces of both sides of the large gear 1 by means of flange bolts or welding. The feature is that protective vertical plates with the same height as the short side of the angle steel are equally distributed on the long side of the inner angle steel of the large gear oil baffle ring 2, and the short side 21 of the angle steel and the protective vertical plate 22 form a double-sided solid oil baffle ring; the safety protective cover 3 is installed on the outer end of the ball mill large gear, and the two ends of the safety protective cover 3 are along the large gear of the ball mill. The center lines of the wheel radial direction are symmetrically distributed. The safety guard 3 consists of three vertical edge safety guards. The three vertical edge safety guards are composed of a guard body 35, two solid vertical plates set on the inner side of the upper part of the guard body 35, and a mesh outer plate. The two inner solid vertical plates are composed of an inner solid vertical plate 31 and an outer solid vertical plate 32. The mesh outer plate is composed of a horizontal mesh 33 extending outward along the short side 22 of the angle steel and a vertical edge mesh 34 perpendicularly connected to the horizontal mesh 33 extending outward. The short side 21 of the angle steel and the protective vertical plate 22 of the double vertical edge solid oil baffle ring 2 are respectively inserted into the grooves formed between the three vertical edges of the safety guard 3, and are evenly distributed in the axial direction and staggered in the radial direction.

[0014] The safety cover 3 of this utility model can be made into a safety cover with an integral structure, or it can be designed as a safety cover with a combined type of integral structure.

[0015] The inner protective plate 22 of the large gear oil baffle ring 2 of this utility model is placed in the gap between the two solid plates of the safety cover. The short side 21 of the outer angle steel is placed in the gap between the outer solid plate 32 and the vertical edge mesh 34 of the safety cover 3. The edge diameter of the short side 21 of the outer angle steel is larger than the inner edge diameter of the outer solid plate 32 of the safety cover.

[0016] The outer short side 21 of the angle steel of the large gear oil baffle ring 2 and the outer solid vertical plate 32 of the safety guard mainly serve to block ore, that is, to prevent leaked ore from flowing axially and radially into the large gear oil baffle ring 2, contacting the tooth surfaces and meshing points of the large and small gears. The inner solid vertical plate 22 of the large gear oil baffle ring 2 and the inner solid vertical plate 31 of the safety guard mainly serve to block oil, that is, to prevent grease on the large gear from flowing axially to the outside of the large gear, causing grease loss and contamination of the equipment, thereby greatly reducing the serious wear and pitting problems of the large and small gear teeth, and stabilizing the operation of the ball mill. The mesh outer plates at both ends of the outermost part of the safety guard completely enclose the rotating large gear and its large gear oil baffle ring, isolating the rotating large gear oil baffle ring from the outside, preventing the large gear oil baffle ring from rotating and causing injury, and achieving a completely reliable safety protection function. In the figure, 4 is the cylinder and 5 is the end cover.

Claims

1. A safety protection device for ore leakage from a large gear in a ball mill, comprising a large gear, oil-blocking rings disposed on both end faces of the large gear, and a safety protective cover with a circular inner edge, wherein the oil-blocking rings are made of unequal-sided angle steel fixed to both end faces of the large gear, characterized in that... On the inner side of the large gear oil baffle ring, protective vertical plates of the same height as the short side of the angle steel are evenly distributed, forming a double-sided solid oil baffle ring with the short side of the angle steel and the protective vertical plates. The safety guard is installed on the outer end of the large gear of the ball mill, and the two ends of the safety guard are symmetrically distributed along the radial center line of the large gear of the ball mill. The guard is a three-sided guard, consisting of a guard body, two solid vertical plates set on the inner side of the upper part of the guard body, and a mesh outer plate. The short side of the angle steel and the protective vertical plates of the double-sided solid oil baffle ring are respectively inserted into the grooves formed between the three vertical edges of the safety guard, and are evenly distributed in the axial direction and staggered in the radial direction.

2. The ball mill large gear ore leakage safety protection device according to claim 1, characterized in that, The two solid vertical plates on the inner side are composed of an inner solid vertical plate and an outer solid vertical plate. The outer mesh plate is composed of a horizontal mesh extending outward along the short side of the angle steel and a vertical mesh perpendicularly connected to the horizontal mesh extending outward.

3. The ball mill large gear ore leakage safety protection device according to claim 1, characterized in that, The inner protective plate of the large gear oil baffle ring is placed in the gap between the two solid plates of the safety cover, and the edge diameter of the outer protective plate is larger than the diameter of the two solid plates of the safety cover.

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