CN206793811U - Improved ball mill barrel protective lining plate - Google Patents

Abstract

The improved protective liner for the cylinder of the ball mill belongs to the supporting facilities of the ball mill of mining machinery equipment. It includes a fan-shaped plate with a reinforcing rib; The length of the rib is 160mm, the width is 90mm, and the height is 120mm; the central angle of the fan-shaped plate is 20 degrees, the chord length of the long arc to which the central angle is 562mm, and the chord length of the short arc to which the central angle is It is 145mm. The utility model has a long service life, saves costs, and achieves the purpose of reducing costs and increasing efficiency.

Description

Improved Protective Liner for Ball Mill Cylinder

technical field

The utility model relates to a protective liner for a cylinder of a ball mill, which belongs to supporting facilities of mining mechanical equipment.

Background technique

The ball mill is the main equipment of the iron ore beneficiation system. The protective liner of the ball mill cylinder shown in Fig. 1 includes a fan-shaped plate 1, which is provided with a reinforcing rib 3 and two countersunk bolt holes 2, and the chord of the long arc of the fan-shaped plate is 604 mm. The high-performance manganese steel plate material made of ZGMn13-Ⅱ is used. The end liner directly contacts the steel ball and the ore. In the long-term operation, there are problems such as easy wear, short service life, difficult replacement, and high consumption costs, especially outside the end liner. The wear is most severe at the bolt holes in the ring. A set of mill liners is replaced every 7 months. The annual cost of the four series of liners is 2.64 million yuan. The cost is relatively high. A series of transformations are required to extend the life cycle of the liners and save costs.

Defects of the protective liner of the ball mill cylinder shown in Figure 1: not wear-resistant, short service life, difficult to assemble.

Contents of the invention

In order to prolong the service life of the liner and achieve the purpose of reducing cost and increasing efficiency, the utility model provides an improved ball mill cylinder protection liner.

The technical solution of the present utility model: the improved protective liner of the cylinder of the ball mill includes a fan-shaped plate, and a reinforcing rib is arranged on the fan-shaped plate; The length is 160mm, the width is 90mm, and the height is 120mm; the central angle of the fan-shaped plate is 20 degrees, the chord length of the long arc to which the central angle is 562mm, and the chord length of the short arc to which the central angle is 145mm.

The utility model extends its service period from 7 months to 9 months by adding ribbed plates; by shortening the radius of the liner plate, it realizes the separate replacement mode of the end liner plate and the cylinder liner plate; In addition to the cost, at least 140,000 yuan in raw material costs are saved each year.

Description of drawings

Fig. 1 is a structural diagram of an existing protective liner for a cylinder of a ball mill.

Fig. 2 is a structural diagram of the utility model.

Among the figure, 1, curved plate, 2, countersunk head bolt hole, 3, reinforcing rib, 4, the second reinforcing rib.

detailed description

1. Cut 120mm off one end of the long arc of the fan-shaped plate 1 of the protective liner of the existing ball mill barrel; shorten the radius of the fan-shaped plate 1 by 120mm (that is, the radius of the fan-shaped plate 1 is shortened from 1795mm to 1675mm) and the long arc corresponds to The string is 562mm.

2. Add the second reinforcing rib 4 with a length of 160 mm, a width of 90 mm and a height of 120 mm to the contact surface of the existing ball mill barrel protection liner with the material. Its beneficial effect is to increase the strength of the liner, reduce the contact area between the material and the end surface of the end liner, and at the same time, through the blocking of the vertical rib, the steel balls and ores that hit the vertical rib will be bounced out at a certain angle, reducing the impact on the vertical rib. Reduced end liner wear.

As shown in Figure 2, the improved protective liner for the cylinder of the ball mill includes a fan-shaped plate 1, on which a reinforcing rib 3 and two countersunk bolt holes 2 are provided; the fan-shaped plate is also provided with a second reinforcement Rib 4, the length of the second reinforcing rib is 160mm, the width is 90mm, and the height is 120mm; the central angle of the fan-shaped plate is 20 degrees, the chord length of the long arc to which the central angle is 562mm, and the central angle to The chord length of the short arc is 145mm.

Claims (1)

1. The improved protective liner for the cylinder of the ball mill comprises a fan-shaped plate on which a reinforcing rib is provided; it is characterized in that the fan-shaped plate is provided with a second reinforcing rib, and the length of the second reinforcing rib is 160mm, The width is 90mm, and the height is 120mm; the central angle of the fan-shaped plate is 20 degrees, the chord length of the long arc to which the central angle is 562mm, and the chord length of the short arc to which the central angle is 145mm.