CN203023312U

CN203023312U - Lower bearing protection device of vertical mill powder concentrator

Info

Publication number: CN203023312U
Application number: CN 201220653872
Authority: CN
Inventors: 申占民; 赵剑波; 容红
Original assignee: Sinoma (tianjin) Powder Technology Equipment Co Ltd; Sinoma Technology and Equipment Group Co Ltd
Current assignee: Sinoma (tianjin) Powder Technology Equipment Co Ltd; Sinoma Technology and Equipment Group Co Ltd
Priority date: 2012-11-30
Filing date: 2012-11-30
Publication date: 2013-06-26
Anticipated expiration: 2022-11-30

Abstract

The utility model discloses a lower bearing protection device of a vertical mill powder concentrator. The device comprises a radial labyrinth seal, an oil seal and an annular air channel which is formed among a bearing seat, a lower cover and an oil reservoir and surrounds a bearing, wherein the bearing seat is fixedly connected with an air inlet pipe communicated with the annular air channel; an annular air outlet communicated with the annular air channel is formed between the lower cover and the oil reservoir; the air inlet pipe is communicated with the atmosphere; and the oil reservoir is fixedly connected with the bearing seat. The device disclosed by the utility model can guarantee the lubrication of a bearing, reduces the temperature around the bearing, and seals the bearing to avoid abrasion, thus the bearing is effectively protected, the service life of the bearing is prolonged, the effective operation rate of a mill is greatly improved, and the maintenance cost can be remarkably saved for a user. Moreover, the device disclosed by the utility model is of a simple and compact structure and high reliability, and is convenient to manufacture and mount.

Description

Roller mill separator lower bearing protective gear

Technical field

The utility model relates to a kind of bearing protection device, particularly relates to a kind of roller mill separator lower bearing protective gear.

Background technique

Powder concentrator is widely used in the production of the powders materials such as raw grinding, pulverized coal preparation, cement grinding and slag milling, and its rotor lower bearing is in mill, and its ambient temperature is generally higher, and operating mode is abominable.This has just proposed very high requirement to the protection of bearing.General powder concentrator in the running, the powder concentrator bearing in mill is all to be under hot environment to move, if the sealing of bearing and lubrication effect are bad, more easily causes the damage of bearing.Bearing causes very disadvantageous consequence in case damage will cause whole set equipment not move to production.

At present, although the home and abroad is used for the mode that the device of roller mill separator lower bearing protection also adopts grease lubrication, considers to arrange bearing and prevent the protective gear that generates heat.Because the temperature of upward flow is higher, sealing and lubrication effect are bad in addition, cause bearing temperature rise too fast, make greatly reduce the working life of bearing, and damaging phenomenon often has generation.

Summary of the invention

The utility model provides a kind of roller mill separator lower bearing protective gear for solving the technical problem that exists in known technology, and this device can prevent damage of bearings, and with the working life of prolongation bearing, and cost is lower, and lubricating grease is difficult for revealing.

The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is: a kind of roller mill separator lower bearing protective gear, described bearing is arranged on the rotating shaft assembly parts, bearing inner race coordinates with rotating shaft, bearing outer ring coordinates with bearing support, and this device comprises rotating shaft assembly parts, gland, described bearing support and the lower cover that sets gradually from top to bottom;

Be formed with the radial labyrinth sealing between described rotating shaft assembly parts and described gland;

Be provided with oil sealing between described gland and spacer sleeve, described spacer sleeve is packed in described rotating shaft;

Described bearing support is provided with inner ring and the outer ring of spring bearing, be formed with on described bearing support between bearing support inner ring and bearing support outer ring and downward opening annular groove, the lower end of described bearing support outer ring is connected with described lower cover, the upper end of described bearing support outer ring is connected with described gland, the lower end of described bearing support inner ring and the upper end of oil storage pool are affixed, and described lower cover is stretched out in the lower end of described oil storage pool;

Be formed with between described bearing support, described lower cover and described oil storage pool and be centered around described bearing annular passage on every side, be connected with the air intake pipe that communicates with described annular passage on described bearing support, be formed with the annular exhaust outlet that communicates with described annular passage between described lower cover and described oil storage pool, described air intake pipe communicates with atmosphere.

Advantage and the good effect that the utlity model has are: one) designed the annular passage of a casting around the powder concentrator bearing, it can reduce temperature variation with certain thickness.Be communicated with annular passage by the outer air intake pipe of introducing of mill simultaneously, the cold wind that passes into can enter in mill after bearing is protected continuously, and discharges outside mill with upward flow, bearing temperature is remained under low-temperature condition work; Two) adopt labyrinth and oil sealing two seals to stop that dust enters bearing inside, sealing effect is good; Three) pass into lubricant grease constantly for bearing and oil sealing by bearing support.

In sum; above three kinds of measures synergy; can guarantee the lubricated of bearing; can also reduce bearing temperature on every side, stuffing box bearing makes it not frayed; thereby effectively protect bearing; extend the working life of bearing, and then greatly improve effective running rate of grinding machine, can also save a considerable maintenance cost for the user simultaneously.And the utility model is simple in structure, compact, reliability is high, be convenient to manufacturing and installation.

Description of drawings

Fig. 1 is structural representation of the present utility model;

In figure: 1, rotating shaft assembly parts, 2, gland, 3, bearing, 4, air intake pipe, 5, lower cover, 6, end cap, 7, oil storage pool, 8, bearing support, 9, spacer sleeve, 10, baffle ring, 11, oil sealing.

Embodiment

For further understanding summary of the invention of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:

See also Fig. 1, a kind of roller mill separator lower bearing protective gear, described bearing 3 is arranged on rotating shaft assembly parts 1, and bearing inner race coordinates with rotating shaft, and bearing outer ring coordinates with bearing support 8, and this device comprises rotating shaft assembly parts 1, the gland 2 that sets gradually from top to bottom; Described bearing support 8 and lower cover 5; Be formed with the radial labyrinth sealing between described rotating shaft assembly parts 1 and described gland 2; Be provided with oil sealing 11 between described gland 2 and spacer sleeve 9, oil sealing 11 is fixed on gland 2 by baffle ring 10, described spacer sleeve 9 is contained in described rotating shaft, described bearing inner race upper end is carried out spacing, and described bearing inner race lower end is undertaken spacing by the end cap 6 that is fixed in the rotating shaft lower end; Described bearing support 8 is provided with the outer ring of spring bearing, be formed with on described bearing support 8 between bearing support inner ring and bearing support outer ring and downward opening annular groove, the lower end of described bearing support outer ring is connected with described lower cover 5, and the upper end of described bearing support outer ring is connected with described gland 2; The upper end of the lower end of described bearing support inner ring and oil storage pool 7 is affixed, described lower cover 5 is stretched out in the lower end of described oil storage pool 7, be provided with oil hole on described bearing support 8, be provided with drain oil in the bottom of described oil storage pool 7, the bearing lubrication grease is stored in oil storage pool 7 planted agent's periodic cleanings; Be formed with between described bearing support 8, described lower cover 5 and described oil storage pool 7 and be centered around described bearing 3 annular passage on every side, be connected with the air intake pipe 4 that communicates with described annular passage on described bearing support 8, be formed with the annular exhaust outlet that communicates with described annular passage between described lower cover 5 and described oil storage pool 7, described air intake pipe 4 is connected or directly communicates with atmosphere with the blower fan of powder concentrator outside.Described bearing outer ring is undertaken spacing by the outer ring of gland 2 and described bearing support.

The erection sequence of said apparatus is as follows:

One) with spacer sleeve 9 be contained in rotating shaft;

Two) be fixed on gland 2 with baffle ring 10 after oil sealing 11 being filled up lubricating grease;

Three) bearing 3 is filled up in the bearing support 8 of packing into after lubricating grease, be connected with bolt with the assembly parts of gland 2, then insert rotating shaft assembly parts 1, and fixing with end cap 6;

Four) be installed into airduct 4, oil storage pool 7 and lower cover 5.Working principle of the present utility model:

Roller mill separator in the running, the powder concentrator lower bearing in mill is under the condition of high temperature and moves.The utility model arranges an annular passage by the periphery at bearing, and passes into cold wind, bearing and hot air isolating are on every side left, so bearing will remain working state at low temperatures.Utilize simultaneously labyrinth and oil sealing two seals that dust is blocked in outside bearing, not frayed with the protection bearing.In addition, allow all be full of lubricating grease in bearing and oil sealing, avoid producing dry friction between they and axle and spacer sleeve.The utility model is protected bearing by above three structural designs, can prevent the damage of bearing, extends the working life of bearing.So not only can improve effective running rate of grinding machine, also save a considerable economic cost because keeping in repair and producing for the user.

Although the above is described preferred embodiment of the present utility model by reference to the accompanying drawings; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away from the scope situation that the utility model aim and claim protect, can also make a lot of forms, within these all belong to protection domain of the present utility model.

Claims

1. roller mill separator lower bearing protective gear, described bearing is arranged on the rotating shaft assembly parts, and bearing inner race coordinates with rotating shaft, and bearing outer ring coordinates with bearing support, it is characterized in that, this device comprises rotating shaft assembly parts, gland, described bearing support and the lower cover that sets gradually from top to bottom;