CN202538836U

CN202538836U - Grinding roller sealing structure of vertical roller mill

Info

Publication number: CN202538836U
Application number: CN 201120426610
Authority: CN
Inventors: 董金利; 马会来; 朱华
Original assignee: TIANJIN SINOMA ENGINEERING RESEARCH CENTER Co Ltd; Sinoma (tianjin) Powder Technology Equipment Co Ltd; Sinoma Technology and Equipment Group Co Ltd
Current assignee: TIANJIN SINOMA ENGINEERING RESEARCH CENTER Co Ltd; Sinoma (tianjin) Powder Technology Equipment Co Ltd; Sinoma Technology and Equipment Group Co Ltd
Priority date: 2011-11-02
Filing date: 2011-11-02
Publication date: 2012-11-21
Anticipated expiration: 2021-11-02

Abstract

The utility model discloses a grinding roller sealing structure of a vertical roller mill, which comprises a shaft sleeve fixed on a roller shaft of a grinding roller and a transparent cover arranged on the shaft sleeve in a sleeving manner; two skeleton oil seals are formed between the transparent cover and the shaft sleeve; a pressing plate arranged on the shaft sleeve in a sleeving manner is arranged on the outer sides of the two skeleton oil seals and fixedly installed on the transparent cover; a groove is formed in an inner circle of the pressing plate; a metal sealing stacking ring is installed in the groove and comprises a moving ring; fixed rings closed to the moving ring are respectively arranged on two sides of the moving ring and are circumferentially fixed on the shaft sleeve; and the moving ring is circumferentially fixed in the groove. The grinding roller sealing structure of the vertical roller mill has the benefits that the grinding roller sealing reliability of the vertical roller mill is improved, the grinding roller sealing service life of the vertical roller mill is prolonged, and the bearing damage probability is reduced; as the metal sealing stacking ring is made of a metal material and is thermally processed, the metal sealing stacking ring is not liable to abrade, has a long service life and is convenient to maintain and replace; and the grinding roller sealing structure of the vertical roller mill has the advantages of simple structure, simplicity and convenience in processing and manufacturing and lower cost and is very suitable to be used under bad working conditions of high temperature and high dust.

Description

A kind of vertical roller grinder grinding roller hermetically-sealed construction

Technical field

The utility model relates to a kind of hermetically-sealed construction, particularly relates to a kind of vertical roller grinder grinding roller hermetically-sealed construction.

Background technology

Vertical roller grinder is widely used in raw grinding, pulverized coal preparation, the production of powder body materials such as cement grinding and slag milling; And the Vertical Mill grinding roller is grinding parts main in the grinding machine, descends grinding roller to be in the encirclement of high concentrate dust in working order, and this has just proposed very high requirement to the protection of the bearing in the grinding roller; The grinding roller bearing is because manufacturing is meticulous, and bearing capacity is big, in case get into dust; Will certainly produce fatal destruction to bearing,, and involve great expense again because it is very high to installation accuracy and environmental requirement; To cause whole set equipment not move in case damage, production will be caused very disadvantageous consequence.

Be used at present protect bearing to prevent that into grey seal form from mainly cooperating the form of outside high velocity air envelope dirt with rubber framework grease seal both at home and abroad, but in practice, dust arrive the rubber framework grease seal place easily; Through accumulation oil sealing is worn and torn, thereby cause the situation that lubricating oil leaks in the grinding roller to take place repeatedly, serious is that dust entering bearing is inner; Make the bearing spot corrosion until scrapping,, comprise changing twice rubber framework grease seal envelope lubricating oil into though seal form is constantly improved; Seal dirt together; But still have very big potential safety hazard, in case these rubber seals and dust granules produce friction, just can in very short time, wear and tear.

Summary of the invention

The utility model provides a kind of good sealing effect, the vertical roller grinder grinding roller hermetically-sealed construction of long working life for solving the technical problem that exists in the known technology.

The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: a kind of vertical roller grinder grinding roller hermetically-sealed construction; Comprise axle sleeve that is fixed on the grinding roller roll shaft and the lid that passes through that is sleeved on the axle sleeve; Between said lid and said axle sleeve, be provided with the twice outside framework oil seal, be provided with the pressing plate that is sleeved on the said axle sleeve in the outside of the said outside framework oil seal of twice, said pressing plate is packed in and covers; The interior circle of said pressing plate is provided with groove; The folded ring of metal sealing is installed in the said groove, and the folded ring of said metal sealing comprises that a slice rotating ring, said rotating ring both sides respectively have the stationary ring that is close to it; Said stationary ring circumferentially is fixed on the said axle sleeve, and said rotating ring circumferentially is fixed in the groove.

Advantage and the good effect that the utlity model has are: be employed in the structure that the twice outside framework oil seal outside installs the folded ring of metal sealing additional; Use the principle of expansion ring seale and labyrinth seal; Make impurity such as dust through many throttle clearance, and produce very big energy consumption, make impurity such as extraneous dust almost not have energy to get into the rubber oil sea place; The effect of envelope dirt is fine; Improve the reliability of vertical roller grinder grinding roller sealing, prolonged the working life of vertical roller grinder grinding roller sealing, reduced the probability of damage of bearings; Encircle this as metal material because of the metal sealing is folded again, and through Overheating Treatment, so not easy to wear, long working life, convenient maintenance and replacement; And the utility model is simple in structure, and processing and manufacturing is easy, and cost is lower, is highly suitable for the bad working environment of high temperature with high dust.

Description of drawings

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

Among the figure: 1, pass through lid, 2, spacer ring, 3, outside framework oil seal, 4, axle sleeve, 51, stationary ring, 52, rotating ring, 6, pressing plate.

The specific embodiment

For further understanding summary of the invention, characteristics and the effect of the utility model, the following examples of giving an example now, and conjunction with figs. specifies as follows:

See also Fig. 1, a kind of vertical roller grinder grinding roller hermetically-sealed construction comprises that the axle sleeve that is fixed on the grinding roller roll shaft 4 covers 1 with being sleeved on the axle sleeve 4 thoroughly; Cover thoroughly 1 and axle sleeve 4 between be provided with twice outside framework oil seal 3, be provided with the pressing plate 6 that is sleeved on the axle sleeve 4 in the outside of twice outside framework oil seal 3, pressing plate 6 is packed in and covers on 1; The interior circle of pressing plate 6 is provided with groove; The folded ring of metal sealing is installed in the groove, and the folded ring of metal sealing comprises that a slice rotating ring 52, rotating ring 52 both sides respectively have the stationary ring 51 that is close to it; Stationary ring 51 circumferentially is fixed on the axle sleeve 4, and rotating ring 52 circumferentially is fixed in the groove.

The operation principle of the utility model:

Cover thoroughly 1 and axle sleeve 4 between twice outside framework oil seal 3 is installed, separate with spacer ring 2 between the twice outside framework oil seal 3, be used to prevent that the lubricating oil of grinding roller inside from leaking outside; In the outside of twice outside framework oil seal 3, the folded ring of metal sealing is installed, between pressing plate 6 and axle sleeve 4 as main envelope dirt parts; The folded ring of this metal sealing is made up of one group of metallic laminations, and wherein two seize covers are static, hole rotation that a slice is bloated; Utilize the principle of expansion ring seale and labyrinth seal; Make impurity such as dust through many throttle clearance, and produce very big energy consumption, make impurity such as extraneous dust almost not have energy to get into the rubber oil sea place.In addition, the contact site of it and associated part is little, has lowered friction, thereby has reduced the generation of heating and wearing and tearing greatly, so play the effect of good blocks dust.

Although combine accompanying drawing that the preferred embodiment of the utility model is described above; But the utility model is not limited to the above-mentioned specific embodiment, and the above-mentioned specific embodiment only is schematically, is not restrictive; Those of ordinary skill in the art is under the enlightenment of the utility model; Not breaking away under the scope situation that the utility model aim and claim protect, can also make a lot of forms, these all belong within the protection domain of the utility model.

Claims

1. a vertical roller grinder grinding roller hermetically-sealed construction comprises axle sleeve that is fixed on the grinding roller roll shaft and the lid that passes through that is sleeved on the axle sleeve between said lid and said axle sleeve, being provided with the twice outside framework oil seal; Be provided with the pressing plate that is sleeved on the said axle sleeve in the outside of the said outside framework oil seal of twice, said pressing plate is packed in and covers, and it is characterized in that; The interior circle of said pressing plate is provided with groove; The folded ring of metal sealing is installed in the said groove, and the folded ring of said metal sealing comprises that a slice rotating ring, said rotating ring both sides respectively have the stationary ring that is close to it; Said stationary ring circumferentially is fixed on the said axle sleeve, and said rotating ring circumferentially is fixed in the groove.