CN212657244U

CN212657244U - Combined seal

Info

Publication number: CN212657244U
Application number: CN202021318304.XU
Authority: CN
Inventors: 郭庆召; 王书华
Original assignee: Chongqing Zhaoquan Technology Co ltd
Current assignee: Chongqing Zhaoquan Technology Co ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-03-05
Anticipated expiration: 2030-07-08

Abstract

The utility model discloses a combined seal, which comprises an inner ring seal sleeve and an outer ring seal with double seal lips, wherein the inner ring seal sleeve is positioned at the end part of a vertical grinding roller and is arranged on the vertical grinding roller through a bearing, and the outer ring seal is arranged at the tail part of the inner ring seal sleeve and is positioned in an external connecting part; the utility model relates to a rationally, simple structure guarantees to install and has sufficient lubricating oil in the bearing of founding the grinding roller at the during operation to prevent that lubricating oil from leaking, and this combined seal life is longer, overcomes too the ordinary problem of restoreing the grinding roller of founding, for enterprise reduce cost.

Description

Combined seal

Technical Field

The utility model relates to a mechanical seal subassembly specifically says so a combination is sealed.

Background

The existing vertical mill grinding roller seal is in contact operation with metal, so that the abrasion and the damage are easy, the service life of a bearing is short, the oil leakage and the poor sealing can occur after the operation time of the grinding roller main shaft seal is too long under a high-temperature working condition, and after the seal failure bearing runs and lacks lubrication, the bearing is damaged due to the fact that no oil film is used for protection, and the temperature is too high; the grinding roller assembly of the vertical grinding roller can be replaced only by turning out the grinding roller assembly from the cavity of the vertical grinding roller regardless of replacing the seal or the bearing. According to the vertical mills of different models, the dead weight of the grinding roller is respectively between 26 tons and 50 tons according to different models, a large amount of manpower, material resources and financial resources are needed, the machine is stopped, great loss is caused to production, lubricating oil is supplemented to the grinding roller after oil leakage is sealed, production is maintained in an oil leakage state, pollution is caused to the environment, and meanwhile lubricating oil is wasted.

SUMMERY OF THE UTILITY MODEL

Therefore, in order to overcome the defects, the utility model provides a sealing assembly with reasonable design and simple structure, which ensures that the bearing arranged on the grinding roller of the vertical mill has enough lubricating oil during working and prevents the lubricating oil from leaking; the reasonable design inner ring seal cover is sealed with the outer ring that has double seal lip, can prevent the leakage of lubricating oil to this combination seal life is longer, reduces the number of times of restoreing the grinding roller of founding, for enterprise reduce cost.

The utility model discloses a realize like this, construct a combination seal, it is sealed including the inner ring seal cover with the outer loop that has the double seal lip, the inner ring seal cover is located the tip of founding the grinding roller and installs in founding the grinding roller through the bearing, outer loop seal installation is in inner ring seal cover afterbody and is located the outer part.

Preferably, the outer ring seal is sequentially provided with a large through hole and a small through hole in the front and at the back, and the large through hole and the small through hole are respectively provided with an annular large sealing lip and an annular small sealing lip.

Preferably, the large through hole has a hole wall extending inwards, and a locking ring for facilitating the large sealing lip to be tightly attached to the outer wall of the bearing is mounted on the outer side of the hole wall.

Preferably, the inner ring sealing sleeve is made of polytetrafluoroethylene materials.

Preferably, the outer ring seal is formed by compressing fluorine glue.

The utility model discloses following beneficial effect has:

the utility model has reasonable design and simple structure, is a sealing component, ensures that the bearing arranged on the grinding roller of the vertical mill has enough lubricating oil during working, and prevents the lubricating oil from leaking; the reasonable design inner ring seal cover and the outer ring seal that has double seal lips can prevent the leakage of lubricating oil, and outer ring seal through double seal lips is high in reliability, and the performance is good.

Meanwhile, a large through hole and a small through hole are sequentially formed in the front and the back of the outer ring seal, an annular large sealing lip and an annular small sealing lip are respectively formed in the large through hole and the small through hole, the large through hole is provided with a hole wall extending inwards, and a locking ring convenient for the large sealing lip to be tightly attached to the outer wall of the bearing is installed on the outer side of the hole wall. The large and small sealing lips have small effect, so that the sealing effect is better, the attaching effect is better through the effect of the locking ring, and the sealing performance is high;

simultaneously the outer ring seal adopts fluorine to press and forms, and the inner ring seal cover adopts polytetrafluoroethylene to make, and after the two combine, can not damage sealed night under the condition that does not have lubricating oil, and this polytetrafluoroethylene has superstrong self-lubricating nature and high temperature resistant 190 degrees for whole sealed life is longer, overcomes the problem of the upright mill grinding roller of too ordinary restoration, for enterprise reduce cost.

Drawings

FIG. 1 is a general schematic view of the present invention;

FIG. 2 is a schematic cross-sectional view of the outer ring seal of the present invention;

in the figure: 1. grinding the roller in a vertical mill; 2. an inner ring seal sleeve; 3. a bearing; 4. sealing an outer ring; 4.1, large through holes; 4.2, small through holes; 4.3, a large sealing lip; 4.4, a small sealing lip; 5. an outer connecting part.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings 1-2, wherein the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-2, the utility model provides a combination seal herein, including inner ring seal cover 2 and the outer ring seal 4 that has two lips, the inner ring seal cover is located the tip of founding grinding roller 1 and installs in founding the grinding roller through bearing 3, outer ring seal 4 installs in the 2 afterbody of inner ring seal cover and is located outer part 5.

In this embodiment, the outer ring seal 4 is sequentially provided with a large through hole 4.1 and a small through hole 4.2 in the front and at the back, and a large annular seal lip 4.3 and a small annular seal lip 4.4 are respectively provided in the large through hole and the small through hole.

In this embodiment, the large through hole has a hole wall extending inward, and a locking ring 4.5 for facilitating the close contact of the large seal lip with the outer wall of the bearing is attached to the outer side of the hole wall.

In this embodiment, the inner ring seal cartridge is made of a teflon material.

In this embodiment, the outer ring seal is formed by pressing fluorine glue.

The utility model relates to a sealing component, when in use, an inner ring sealing sleeve is arranged at the end part of a grinding roller of a vertical mill, a bearing is arranged on the inner ring sealing sleeve, an external component is arranged on the bearing, an outer ring is arranged at the rear part in a sealing way and is clamped and arranged through an external component; through outer ring seal and the cooperation of inner ring seal cover, when guaranteeing the bearing rotation, have sufficient lubricating oil to this lubricating oil portion leaks.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A composite seal, characterized by: including inner ring seal cover (2) and outer ring seal (4) that have the double seal lip, the inner ring seal cover is located the tip of founding grinding roller (1) and installs in founding the grinding roller through bearing (3), outer ring seal (4) are installed in inner ring seal cover (2) afterbody and are located outer part (5).

2. The composite seal of claim 1, wherein: big through-hole (4.1) and little through-hole (4.2) have been seted up in proper order around outer ring seal (4) to annular big seal lip (4.3) and little seal lip (4.4) have been seted up respectively to big through-hole and little through-hole inside.

3. The composite seal of claim 2, wherein: the big through hole is provided with a hole wall extending inwards, and a locking ring (4.5) convenient for tightly attaching the big sealing lip to the outer wall of the bearing is arranged on the outer side of the hole wall.

4. The composite seal of claim 1, wherein: the inner ring sealing sleeve is made of polytetrafluoroethylene materials.

5. The composite seal of claim 1, wherein: the outer ring seal is formed by pressing fluorine glue.