Central slewing bearing of efficient thickener

Abstract

The utility model aims to provide a center slewing bearing of a high-efficiency thickener, aiming at solving the problems in the slewing mechanism of the existing peripheral transmission high-efficiency thickener. The center slewing bearing of the high-efficiency thickener consists of an upper ring, a lower ring and rolling body steel balls, a plurality of upper grooves are evenly distributed in the bottom end of the upper ring, a plurality of lower grooves are evenly distributed in the top end of the lower ring, the upper ring is located above the lower ring, the rolling body steel balls are arranged in sphere-like bodies formed by the upper grooves and the lower grooves, and a gap is formed between the upper ring and the lower ring. The mud guards are arranged on the outer sides and the inner sides of the upper ring and the lower ring, and the mud guards of the upper ring and the lower ring are arranged at intervals, so that the mud guards on the outer sides and the inner sides of the upper ring and the lower ring are distributed to form a labyrinth sealing coaming. By integrating the upper ring, the lower ring, the upper ring pad and the lower ring pad, the hidden danger that a steel ball runs out is eliminated, the service life of equipment can be prolonged to two years, passive overhaul is avoided, and normal production order is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of mine dressing, and particularly relates to a central slewing bearing of a high-efficiency concentrator under special working conditions. Background Art

[0002] The process of concentrating slurry with peripheral transmission high-efficiency thickener is as follows: after the material enters the central cylinder through the feeding chute, a part of the larger particles directly enters the lower sedimentation area and is deposited in the aggregate pile pit at the bottom of the pool, while the other part of the fine particles is dispersed to the periphery for sedimentation. As the rotating bridge rotates, the scraping device and the auxiliary rake device scrape the precipitated sludge into the aggregate pile pit at the bottom of the pool and are discharged by the underflow pump; the main components of the peripheral transmission high-efficiency thickener are the slewing mechanism and the collector, the rotating bridge and the transmission, the scraping device, etc. The slewing mechanism is the core component of the machine, which is mainly composed of a turntable, a turntable seat and a center bearing. The center bearing is composed of upper and lower rings, upper and lower ring pads and rolling steel balls, see Figure 1 . The slewing mechanism is the key part of the concentrator maintenance, and the center bearing must be replaced every time the maintenance is carried out. Most of the center bearings of the slewing mechanism are open ball bearings. Affected by the full-load production and feeding, the running environment of the rolling steel balls is harsh, and the upper and lower ring gaskets and other components are thin. As a result, the upper and lower ring gaskets will only have a one-year operation cycle before the outer edge of the raceway is crushed, the ring gaskets are damaged, and the steel balls run out. There are even cases where the upper and lower ring gaskets are damaged before the maintenance time, and emergency passive repairs have to be carried out. Generally, the repair takes 5 days, which disrupts the normal production order and affects the output. Summary of the invention

[0003] The purpose of the utility model is to provide a high-efficiency concentrator center slewing bearing to solve the problems existing in the existing peripheral transmission high-efficiency concentrator slewing mechanism. The utility model integrates the upper and lower rings with the upper and lower ring pads to eliminate the hidden danger of steel balls running out, extend the equipment service life by up to 2 years, avoid passive maintenance, and ensure normal production order.

[0004] The technical solution of the present invention is a high-efficiency concentrator central slewing bearing, which is composed of an upper ring, a lower ring, and rolling steel balls;

[0005] The bottom end of the upper ring is evenly distributed with a plurality of upper grooves, the top end of the lower ring is evenly distributed with a plurality of lower grooves, the upper ring is located above the lower ring, the rolling body steel ball is arranged in the spherical body formed by the upper grooves and the lower grooves, and a gap is arranged between the upper ring and the lower ring;

[0006] The outer sides and inner sides of the upper ring and the lower ring are provided with fenders, and the fenders of the upper ring and the lower ring are arranged at intervals, so that the fenders of the outer sides and the inner sides of the upper ring and the lower ring are distributed to form a labyrinth sealing enclosure.

[0007] Furthermore, in the central slewing bearing of the above-mentioned high-efficiency concentrator, a gap is provided between the rolling steel ball and the spherical body formed by the upper hemispherical groove and the lower hemispherical groove.

[0008] Furthermore, in the above-mentioned high-efficiency concentrator central slewing bearing, the width of the upper ring and the lower ring is 1.8 to 2.5 times the diameter of the rolling steel ball.

[0009] Compared with the prior art, the advantages of the present invention are:

[0010] 1. The utility model integrates the upper and lower rings with the upper and lower ring pads to eliminate the hidden danger of steel balls running out, extend the service life of the equipment by up to 2 years, avoid passive maintenance, and ensure normal production order.

[0011] 2. The labyrinth sealing enclosure can effectively reduce the flow of slurry in the rotary mechanism and prevent hard foreign objects from entering the rotary mechanism to cause mechanical damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 , side view of the original high-efficiency concentrator center bearing.

[0013] Figure 2 , a side sectional view of the center slewing bearing of the utility model.

[0014] Figure 3 , a side sectional view of the lower ring of the utility model.

[0015] Among them, 1. upper ring, 2. lower ring, 3. rolling steel ball, 4. lower groove, 5. fender, 6. upper ring gasket, 7. lower ring gasket. DETAILED DESCRIPTION Example

[0016] A high-efficiency concentrator central slewing bearing, consisting of an upper ring 1, a lower ring 2, and rolling steel balls 3;

[0017] The bottom end of the upper ring is evenly distributed with several upper grooves, and the top end of the lower ring is evenly distributed with several lower grooves 4. The upper ring is located above the lower ring, and the rolling steel ball is arranged in the spherical body formed by the upper grooves and the lower grooves, and a gap is provided between the upper ring and the lower ring;

[0018] The outer and inner sides of the upper ring and the lower ring are provided with fenders 5, and the fenders of the upper ring and the lower ring are arranged at intervals, so that the fenders of the outer and inner sides of the upper ring and the lower ring form a labyrinth sealing enclosure;

[0019] A gap is provided between the rolling steel ball and the spherical body formed by the upper hemispherical groove and the lower hemispherical groove;

[0020] The width of the upper ring and the lower ring is 1.8 to 2.5 times the diameter of the rolling steel ball.

[0021] The principle of this device is: when the high-efficiency concentrator is running, the rotary mechanism rotates driven by the power mechanism, so that the scraping device and the auxiliary rake device scrape the precipitated sludge into the aggregate pile pit at the bottom of the pool and discharge it by the underflow pump. The utility model widens the upper and lower rings of the central rotary bearing and increases the thickness to prevent the steel balls in the bearing from crushing the outer edge of the raceway, and sets mud guards on the inner and outer diameters of the new upper and lower rings to form a labyrinth sealing enclosure, which can effectively reduce the entry of slurry into the rotary mechanism and prevent hard foreign objects from entering the rotary mechanism to cause mechanical damage. In addition, there is a gap between the rolling body steel ball and the spherical body formed by the upper hemispherical groove and the lower hemispherical groove, so that even if mud enters the bearing, it can be squeezed out during rotation.

Claims

1. A high-efficiency concentrator central slewing bearing, characterized in that: It consists of an upper ring, a lower ring, and rolling steel balls; The bottom end of the upper ring is evenly distributed with a plurality of upper grooves, the top end of the lower ring is evenly distributed with a plurality of lower grooves, the upper ring is located above the lower ring, the rolling body steel ball is arranged in the spherical body formed by the upper grooves and the lower grooves, and a gap is arranged between the upper ring and the lower ring; The outer side and inner side of the upper ring and the lower ring are provided with fenders, and the fenders of the upper ring and the lower ring are arranged at intervals, so that the fenders of the outer side and the inner side of the upper ring and the lower ring form a labyrinth sealing enclosure.

2. The high-efficiency concentrator central slewing bearing according to claim 1, characterized in that: A gap is arranged between the rolling body steel ball and the spherical body formed by the upper hemispherical groove and the lower hemispherical groove.

3. The high-efficiency concentrator central slewing bearing according to claim 1, characterized in that: The width of the upper ring and the lower ring is 1.8 to 2.5 times the diameter of the rolling steel ball.

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