CN100448544C

CN100448544C - Roller grinder

Info

Publication number: CN100448544C
Application number: CNB2006100324966A
Authority: CN
Inventors: 夏纪勇; 王大臣
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-31
Filing date: 2006-10-31
Publication date: 2009-01-07
Anticipated expiration: 2026-10-31
Also published as: CN1943863A

Abstract

The roller grinder includes feeding port, discharging port, grinding roll, grinding disc, main shaft, main shaft bearing, support, grinding roll shaft, grinding roll bearing, and casing. The main shaft is provided with swivel joint with single or several holes for fluid to pass through, and corresponding oil and gas holes communicated to the passages in the swivel joint, so that lubricant can pass through the grinding roll bearing or clean gas can enter to the sealing device for isolation avoiding dust or ore slurry to enter the bearing. The present invention has long service life of bearing and less failures of the roller grinder.

Description

A kind of roller mill

Technical field

The present invention relates to a kind of roller mill, especially relate to a kind of roller mill that is applicable to the various material grindings of industry such as metallic ore, nonmetallic ore, the energy, metallurgy, chemical industry, new material.

Background technology

The basic principle of roller mill is by will treating that grind materials places between grinding roller and the mill (or bull ring), utilizes mechanical force such as spring force, hydraulic coupling or the centrifugal force that produced by rotation etc., and material is rolled pulverizing.The milling equipment of this utilization material bed extruding pulverization principle is compared and is utilized the milling equipment of shearing, impulsive force to have characteristics such as mill efficiency height, power consumption is low, wearing and tearing are little.Roller mill is of a great variety, and vertical, horizontal two big classes are arranged, and divides into not only: mill rotation, grinding roller motionless relatively (not revolving round the sun) and grinding roller rotation but also with respect to the mill revolution, mill does not rotate two types.

Chinese patent discloses a kind of vertical roll grinder No. 94110912.7, its mill can move down and deflection with lower casing, grinding roller is equipped with by the support activity in the mill top, support is contained on the support by main shaft, and when main shaft made the support rotation, grinding roller rotated synchronously, and rotation under the effect of friction and material resistance, charging aperture is positioned at grinding machine top, and material is crushed by grinding roller, and the material after the pulverizing is by outside the discharging sleeve pipe discharge machine on the lower casing.

Chinese patent also discloses a kind of vertical roll grinder No. 99233773.9, its mill is installed in the support, maintain static, grinding roller is equipped with by floral disc, rocking arm, hinge in the mill inboard, and floral disc is contained on the bearing block by main shaft, when main shaft makes the floral disc rotation, grinding roller rotates synchronously, and rotation under the effect of friction and material resistance, and charging aperture is positioned at grinding machine top, material is crushed by grinding roller, and the material after the pulverizing is by outside the discharging opening discharge machine of bottom.

Common edge runner is the grinding machine of another structure, and grinding roller is by the drive unit driven rotary, and mill maintains static, and material is by crushed under the gravity of grinding roller or other grinding power effect.

Above-mentioned roller mill, because the grinding roller rotation is revolved round the sun with respect to mill again, grinding roller is in dust many (dry method grindings) or has in the adverse circumstances of ore pulp (wet grinding), the revolution of grinding roller requires to be equipped with main shaft bearing, the rotation inevitable requirement of grinding roller is equipped with the grinding roller bearing, and the lubricated and sealing of its bearing is the key technical problem that this kind equipment faces.Because grinding roller revolution, the lubricated general employing of bearing is regularly grease-added, routine techniques means such as labyrinth type or rotating shaft outside framework oil seal are adopted in sealing, because dust or ore pulp are brought into bearing inevitably, the heat of machine operation generation can not in time be taken out of outside the machine in addition, makes lubricant retrogradation, the exsiccation of bearing, and oil sealing is quick-wearing very, cause bearing short service life, the grinding machine operation troubles is many.

United States Patent (USP) discloses a kind of roller for No. 3337142 and has milled and control device, promptly grind the Raymond machine that power is lubricated the grinding roller bearing simultaneously by the hydraulic motor control roll of setting up with main shaft revolution synchronously, material enters mill by the charging aperture that is positioned at the middle part, after being rolled by grinding roller, blow from bottom to top to classifier by wind, outside machine was taken on top out of, meal dropped down onto between grinding roller and bull ring and refaces fine powder after the classification by air-flow.Be with general Raymond machine difference, this grinding machine has been set up high-pressure oil pipe 76 the outer passage 59 by main core portion of hydraulic oil slave has been entered pipeline 81, enter oil motor 52 again, the low pressure oil of coming out from oil motor 52, one side from oil return pipe 82 and passage 65,63 outside 72 discharge machines, by oil pipe 92 the grinding roller bearing is lubricated on the other hand, oil motor and hookup 53,54,34,37,38 thereof etc. form the qualification of grinding roller position and the control of roller pressure, improve the abrasive dust effect.But, the device of these increases makes structure become very complicated, pipe joint is many, oil motor and most pipe joint be the pressure height not only, and oil easily leaks, and is in vibration, impact conditions, lubricated and the sealing of its bearing is not effectively solved yet in addition, therefore, operation troubles must be many, and the beneficial effect of its acquisition is had a greatly reduced quality.

Summary of the invention

The objective of the invention is to overcome the grinding roller rotation again with respect to the above-mentioned defective of the roller mill of mill revolution, provide a kind of bearing long service life, the roller mill that operation troubles is few.

The objective of the invention is to be achieved through the following technical solutions:

It comprises charging aperture, discharging opening, grinding roller, mill, main shaft, main shaft bearing, support, the grinding roller axle, grinding roller bearing, casing, described casing comprises support, support can be positioned at top or the middle part or the bottom of casing, and described charging aperture is located at the top or the middle part of casing, the top of described casing, middle part or bottom are provided with discharging opening, described mill is located at the casing inboard, grinding roller is equipped with by support in mill top or inboard, and support passes through main shaft, main shaft bearing is installed on the bearing block, establishes the main shaft bearing sealing device between main shaft and bearing block, described bearing block is installed on the casing, main shaft is connected with drive unit, makes main axis rotation by drive unit, and described grinding roller is installed on the grinding roller axle, the grinding roller axle is rack-mount by the grinding roller bearing, or the grinding roller axle is rack-mount, and grinding roller is installed on the grinding roller axle by the grinding roller bearing, also is provided with the sealing that the grinding roller associated sealing arrangement for bearings is used for the grinding roller bearing; It is characterized in that; described main shaft is provided with that slave is imported clean gas outward or/and the swivel joint that lubricant is used; described swivel joint moved end is installed on the main shaft by flange; quiet end and at least one pipeline (preferred 2-3 root) link; moving; be provided with sealing device between quiet end; the clean gas that is provided with the outer input of slave in the swivel joint is or/and single channel that lubricant can pass through or multichannel hole; be provided with in the main shaft axially; horizontal clean gas is or/and the lubricant passageway hole; the clean gas of swivel joint is or/and the respective channel perforation in lubricant passageway and the main shaft; described main shaft clean gas or/and the lubricant passageway hole be communicated with grinding roller bearing or/and grinding roller associated sealing arrangement for bearings by tube connector; being convenient to lubricant enters the grinding roller bearing or passes in and out from the grinding roller bearing; make clean gas enter sealing device and play buffer action; thereby make dust or ore pulp be difficult to enter the grinding roller bearing, bearing is shielded from this device.

Described swivel joint moved end can be installed on the main shaft with main axis rotation by flange; Set sealing device between dynamic and static end can prevent that interchannel from interpenetrating or and external environment connect.During main axis rotation, the pipeline that connects mutually with quiet end is with main axis rotation, and utilizes swivel joint to carry gas, liquid or other fluid continuously to the main shaft of rotation.

In general, the speed of mainshaft is lower, and working environment is better than grinding roller, and conventional lubricated, sealing means can satisfy instructions for use substantially, can be by aforesaid pipeline with lubricant and sealing gas input main shaft bearing or main shaft bearing sealing device.But ought also can directly utilize the interconnection on the main shaft to realize technological improvement lubricated and sealing means in case of necessity.

Technical scheme of the present invention has following concrete mode at least: 1, adopt single pass swivel joint, slave is imported clean gas outward, by passage on the main shaft and tube connector etc., enters the grinding roller associated sealing arrangement for bearings, or also enters the main shaft bearing sealing device simultaneously again; 2, adopt single pass swivel joint, the outer batch (-type) ground input of slave lubricant by passage on the main shaft and tube connector etc., enters the grinding roller bearing, or also enters the main shaft bearing sealing device simultaneously again; 3, adopt twin-channel swivel joint, a passage slave is imported clean gas outward, again by passage on the main shaft and tube connector etc., enter the grinding roller associated sealing arrangement for bearings, or also entering the main shaft bearing sealing device simultaneously, the outer batch (-type) ground input of another passage slave lubricant is again by passage on the main shaft and tube connector etc., enter the grinding roller bearing, or also enter the main shaft bearing sealing device simultaneously; 4, adopt twin-channel swivel joint, a passage slave is imported clean gas outward, again by passage on the main shaft and tube connector etc., enter the grinding roller associated sealing arrangement for bearings, or also enter the main shaft bearing sealing device simultaneously, the outer continous way of another passage slave ground input lubricant, this moment, main shaft was provided with three passages, except that inlet channel, be provided with each passage of oil-feed and oil return, the lubricant (comprising oil) that enters from swivel joint is by oil inlet passage on the main shaft and tube connector etc., enter the grinding roller bearing, make lubricant enter main shaft bearing by the drainback passage on oil return pipe and the main shaft again, lubricant is drawn outside the machine, form the mode of being back to back of lubricant from the bearing block perforate.From as can be seen with upper type, can also adopt single pass swivel joint, form being back to back of lubricant; Or the like.

The present invention is revolved round the sun with respect to mill again for the grinding roller rotation, and mill does not rotate a kind of technological improvement of such roller mill.

Compare with existing roller mill, the present invention adopts swivel joint with in lubricant or clean gas (the being generally air) reader, and the bearing life of grinding machine is improved, and the grinding machine fault is few, the running rate height.

The present invention is applicable to the dry method grinding of the various materials of industry such as metallic ore, nonmetallic ore, the energy, metallurgy, chemical industry, new material, also is suitable for wet grinding.When being used for the dry method grinding clean gas use in input sealing continuously again,, can be provided with that dust arrester is handled dusty gas in case dust pollution owing to constantly having sealing gas to enter in the machine.

Description of drawings

Fig. 1 is the structural representation of one embodiment of the invention;

Fig. 2 is interior pipeline of main shaft and fluid (oil, a gas) passage structure for amplifying schematic diagram embodiment illustrated in fig. 1.

Among the figure: the 1-swivel joint; The 2-main shaft; The 3-main shaft bearing; 4-main shaft bearing sealing device; The 5-bearing block; The 6-spreading disk; Casing among the 7-; 8-rocking arm cover; The 9-hinge; 10-grinding roller bearing; 11-grinding roller associated sealing arrangement for bearings; 12-grinding roller axle; The 13-grinding roller; The 14-support; The 15-mill; The 16-discharging opening; The 17-support; The 18-charging aperture; 101-air inlet (in access opening is arranged); 102-oil-in (in access opening is arranged); 201-main shaft inlet channel; 202-main shaft oil inlet passage; 203-main shaft drainback passage; The 301-inlet pipe connection; 302-oil-feed tube connector; 303-oil return tube connector; 503-oil return outlet.

The specific embodiment

The invention will be further described below in conjunction with embodiment.

With reference to accompanying drawing 1,2, present embodiment comprises charging aperture 18, discharging opening 16, grinding roller 13, mill 15, main shaft 2, main shaft bearing 3, support 17, grinding roller axle 12, grinding roller bearing 10, middle casing 7, described casing comprises support 14, support 14 is positioned at the casing bottom, the top of described casing is provided with charging aperture 18, and the bottom of described casing is provided with discharging opening 16, and described mill 15 is located at the casing inboard, grinding roller 13 is equipped with by support 17 in mill 15 inboards, support 17 is by main shaft 2, main shaft bearing 3 is installed on the bearing block 5 that is provided with oil return outlet 503, and 5 of main shaft 2 and bearing blocks are established main shaft bearing sealing device 4, and described bearing block 5 is installed on the casing, main shaft 2 is connected with drive unit, described grinding roller 13 is installed on the grinding roller axle 12, and grinding roller axle 12 is installed on the support 17 by grinding roller bearing 10, and grinding roller bearing 10 is provided with sealing device 11; Main shaft 2 is provided with swivel joint 1, be provided with the air inlet that fluid can pass through (in access opening is arranged) 101 in the swivel joint 1, oil-in (in access opening is arranged) 102, be provided with inlet channel 201 in the main shaft 2, oil inlet passage 202, drainback passage 203 (has manhole in the main shaft, insert 2 concentric pipes and corresponding joint again, in just forming, in, outer three access openings, interior is inlet channel 201, in be oil inlet passage 202, outer is drainback passage 203), the inlet channel 101 of swivel joint 1 (in access opening is arranged) connects with inlet channel 201 in the main shaft 2, and the oil inlet passage 102 of swivel joint 1 (in access opening is arranged) connects with oil inlet passage 202 in the main shaft 2; Inlet channel 201 in the main shaft 2 is communicated with grinding roller associated sealing arrangement for bearings 11 by inlet pipe connection 301 pipes; oil inlet passage 202 in the main shaft 2 is communicated with grinding roller bearing 10 by oil-feed tube connector 302; drainback passage 203 in the main shaft 2 is communicated with grinding roller bearing 10 by oil return tube connector 303; being convenient to lubricating oil or other lubricant enters grinding roller bearing 10 or flows out from grinding roller bearing 10; and make clean gas enter 11 buffer actions of grinding roller associated sealing arrangement for bearings; make dust or ore pulp be difficult to enter grinding roller bearing 10, bearing is shielded.

Described swivel joint 1 moved end is installed on the main shaft 2 by flange, and with main shaft 2 rotations, quiet end and 2 pipelines link, and between dynamic and static end sealing device are arranged, and prevent that interchannel from interpenetrating or and external environment connect.

Present embodiment adopts twin-channel swivel joint 1, inlet channel 101 slaves are imported clean gas outward, again by inlet channel 201 and inlet pipe connection 301 on the main shaft 2, enter grinding roller associated sealing arrangement for bearings 10, another is the outer continous way of oil inlet passage 102 a slaves ground input lubricant, main shaft 2 is provided with three passages, except that inlet channel 201, also be provided with oil inlet passage 202 and drainback passage 203, the lubricant that enters from swivel joint 1 is by oil inlet passage 202 and oil-feed tube connector 302 on the main shaft 2, enter grinding roller bearing 10, make lubricant enter main shaft bearing 3 by the drainback passage on oil return tube connector 303 and the main shaft 203 again, from the oil return of bearing block 5 outlet 503 lubricant is drawn outside the machine, form the mode of being back to back of lubricant, and can take away bearing because the heat that material grinding produces.

Claims

1, a kind of roller mill, comprise charging aperture, discharging opening, grinding roller, mill, main shaft, main shaft bearing, support, the grinding roller axle, the grinding roller bearing, casing, described casing comprises support, support is positioned at top or the middle part or the bottom of casing, described charging aperture is located at the top or the middle part of casing, the top of described casing, middle part or bottom are provided with discharging opening, described mill is located at the casing inboard, grinding roller is equipped with by support in mill top or inboard, support passes through main shaft, main shaft bearing is installed on the bearing block, establish the main shaft bearing sealing device between main shaft and bearing block, described bearing block is installed on the casing, main shaft is connected with drive unit, described grinding roller is installed on the grinding roller axle, and the grinding roller axle is rack-mount by the grinding roller bearing, or the grinding roller axle is rack-mount, grinding roller is installed on the grinding roller axle by the grinding roller bearing, the grinding roller bearing is provided with sealing device, it is characterized in that, described main shaft is provided with slave and imports clean gas outward, the perhaps swivel joint used of clean gas and lubricant, described swivel joint moved end is installed on the main shaft by flange, and quiet end and at least one pipeline link, and is moving, be provided with sealing device between quiet end, be provided with the clean gas of the outer input of slave in the swivel joint, perhaps single channel or the multichannel hole that can pass through of clean gas and lubricant is provided with in the main shaft axially, horizontal clean gas, the perhaps access opening of clean gas and lubricant, the clean gas of swivel joint, perhaps the respective channel in clean gas and lubricant passageway and the main shaft connects, described main shaft clean gas, and perhaps clean gas and lubricant passageway hole are communicated with grinding roller bearing or/and grinding roller associated sealing arrangement for bearings by tube connector.

2, roller mill according to claim 1 is characterized in that, described swivel joint is a single channel, and slave is imported clean gas outward, again by passage on the main shaft and tube connector, enters the grinding roller associated sealing arrangement for bearings, or also enters the main shaft bearing sealing device simultaneously.

3, roller mill according to claim 1, it is characterized in that, described swivel joint is a binary channels, and a passage slave is imported clean gas outward, again by passage on the main shaft and tube connector, enter the grinding roller associated sealing arrangement for bearings, or also entering the main shaft bearing sealing device simultaneously, the outer batch (-type) ground input of another passage slave lubricant is again by passage on the main shaft and tube connector, enter the grinding roller bearing, or also enter the main shaft bearing sealing device simultaneously.

4, roller mill according to claim 1, it is characterized in that, described swivel joint is a binary channels, a passage slave is imported clean gas outward, again by passage on the main shaft and tube connector, enter the grinding roller associated sealing arrangement for bearings, or also enter the main shaft bearing sealing device simultaneously, the outer continous way of another passage slave ground input lubricant, this moment, main shaft was provided with three passages, except that inlet channel, be provided with each passage of oil-feed and oil return, the lubricant that enters from swivel joint is by oil inlet passage on the main shaft and tube connector, enter the grinding roller bearing, make lubricant enter main shaft bearing by the drainback passage on oil return pipe and the main shaft again, lubricant is drawn outside the machine, form the mode of being back to back of lubricant from the bearing block perforate.