CN2217481Y - Rolling-bearing ball-crusher - Google Patents

Abstract

The utility model relates to a ball mill with a rolling bearing. The rolling bearing replaces a bush structure and a positioning anchor which prevents axial displacement, the service life of the utility model is increased, and oil consumption, water consumption and electricity consumption are saved. The ball mill can be widely used for industrial fields such as cements, mines, ceramics, electric power, metallurgy, etc.

Description

The rolling bearing ball mill

The utility model relates to a kind of improvement of main bearing of ball grinding mill.This machine is widely used in the grinding of industrial circle Central Plains such as cement, mine, pottery, electric power, metallurgy, fuel.

The structure of grinding machine, generally by cylindrical shell, liner plate and partition panel (in the cylindrical shell), bistrique, charging and discharging device and transmission device are formed.Cylindrical shell is angle, a hollow garden, forms with the roll of steel plate weldering, and the cylindrical shell two ends are ring flanges, in order to be connected with bistrique.Bistrique is made up of hollow shaft, bearing, flat conical head and ring flange.The barrel diameter of grinding machine is 1.2～4.0 meters of ∮, and tube length is more than 4.5～10 meter, the following grinding machine of general 2.2 * 6.5 meters specifications of ∮, and its draw ratio is less, is called ball mill again.General grinding machine all assembles sliding bearing.Because the grinding machine dead weight is very heavy, adds steel ball or forging abrasive body, the block raw material of processing, so the dynamic and static load of grinding machine is very big.Therefore temperature regime all is the problem that professional's utmost point is paid close attention in the structure of bearing and material and the production.

Existing grinding machine main shaft bearing is the bearing shell structure, and its material is babbit or mixes the low amounts of resin material and make.In order not damage in the bearing general axis tile structure spiral coil cooling tube is arranged, earlier be pressed into lubricating oil between the bearing and the diameter of axle at the grinding machine prestart simultaneously with the oil pump high pressure, make hollow shaft at the grinding machine prestart just by high pressure oil film jack-up, to reduce the friction between the metal surface, therefore grinding machine year oil consumption, the water consumption with the sliding friction bearing is very big, with regard to 2.2 * 6.5 meters ball mill opinions of ∮, about 10 tons of year oil consumption, about 15000 tons of water consumption.

The purpose of this utility model is to adopt large-size rolling bearing structure (about ∮ is more than 1.0 meters), replaces original bearing shell, and the change sliding friction is rolling friction, thereby has improved the service life of ball mill, also a large amount of consumptions of saving oil, water, electricity.

The technical solution of the utility model is the main grinding wheel head structure that improves on existing grinding machine basis, keeps existing ring flange, main shaft and cylindrical shell syndeton, removes members such as bearing shell cooling water, hydraulic oil pump.

It is characterized in that:

(1) with there being 3000 type rolling bearings 3 of automatic aligning function to be connected with quill shaft 4;

(2) 4 of rolling bearing 3 and quill shafts are fixing with locating ring 7, in order to stop the axial displacement of bearing;

(3) in the rolling bearing 3 with alignment pins 5 stoping the revolutions at random of bearing outer ring, with the compensation variation of axial position of turning;

(4) rolling bearing 3 is by lubricating cup 6 place's fattens, without high pressure liquid oil.

Advantage of the present utility model: reduced power consumption 20～40%, 8～10 tons of annual fuel-economizings, grinding machine is without cooling water conserve water consumption, because rolling friction, damage of bearings is few.Therefore improved the motor-driven rate of rotation of ball milling, general bearing prolongs more than 10 times service life.

Description of drawings:

Fig. 1: rolling bearing ball mill

Among the figure: 1. cylindrical shell 2. bearing blocks 3. rolling bearings 4. quill shafts 5. alignment pins 6. lubricating cups 7. locating rings

Fig. 2: existing bearing shell body

Among the figure: 1. watt 2. watts of bodies of lining

Embodiment:

This machine has been used in the raw material of shaft kiln, the grinding of grog in cement industry.

Claims (1)

1. a rolling bearing ball mill is made up of cylindrical shell, bistrique, charging/discharging device and transmission device, it is characterized in that:

(1) with there being 3000 type rolling bearings 3 of automatic aligning function to be connected with quill shaft 4;

(2) 4 of rolling bearing 3 and quill shafts are fixing with locating ring 7,

(3) use fixedly Internal and external cycle displacement of alignment pin 5 in the rolling bearing 3.

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