CN210566254U

CN210566254U - Mechanical seal of bearing separation type stirrer

Info

Publication number: CN210566254U
Application number: CN201921146149.5U
Authority: CN
Inventors: 刘翔; 黄志均; 陈智军; 杨文斌; 李进波; 彭传发; 王成信; 罗珊; 刘剑龙; 赖腾骏
Original assignee: Sichuan Sdms Machinery Sealing Element Manufacturing Co ltd
Current assignee: Sichuan Sdms Machinery Sealing Element Manufacturing Co ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-05-19
Anticipated expiration: 2029-07-19

Abstract

The utility model discloses a mechanical seal of a bearing separation type stirrer, which comprises a shaft sleeve fixedly sleeved on a main shaft, and a movable ring and a static ring which are mutually matched and sealed; the movable ring is fixed on the shaft sleeve, the static ring is connected with the pump shell through the flushing water jacket, and the rear end of the static ring is provided with a compensating spring; the method is characterized in that: a bearing is fixedly sleeved on the main shaft behind the shaft sleeve; the outer ring surface of the bearing is fixedly connected with the bearing seat, and the rear end of the bearing is provided with a sealing cover; the flushing water jacket, the bearing seat and the sealing cover are connected through bolts. The mechanical seal with the structure has the advantages that the bearing assembly and the sealing assembly are designed in a split mode, so that the whole mechanical seal can be respectively transported and installed, and the labor intensity of workers is reduced. Meanwhile, the bearing does not need to be installed on the shaft sleeve, so that the sealing ring is more convenient and quicker to detach and replace, and the time for maintaining equipment is saved.

Description

Mechanical seal of bearing separation type stirrer

Technical Field

The utility model relates to a mechanical seal, especially a stirrer mechanical seal.

Background

The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, reaction kettles, compressors, and the like. Since the drive shaft extends through the inside and outside of the apparatus, there is a circumferential gap between the shaft and the apparatus through which the medium in the apparatus leaks out, and if the pressure in the apparatus is lower than atmospheric pressure, air leaks into the apparatus, so that a shaft seal device must be provided to prevent leakage. The shaft seal has many kinds, and the mechanical seal has the advantages of small leakage amount, long service life and the like, so the mechanical seal is the most important shaft sealing mode in the devices in the world. Mechanical seals, also called face seals, are defined in the relevant national standards as follows: "means for preventing fluid leakage, which is composed of at least one pair of end faces perpendicular to the rotation axis, and which are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal. "

The mechanical seal of the stirrer is provided with a bearing, and the bearing is used for fixing the rotating shaft and the cavity and preventing the mechanical seal from being damaged due to radial runout of the rotating shaft. Usually, the bearing of the stirrer seal is arranged on the shaft sleeve, and the sealing ring and the like are assembled into a whole, so that the mechanical seal is heavy and inconvenient to install. And because the bearing needs to be tightly matched on the shaft sleeve, the mechanical seal is inconvenient to disassemble and maintain.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a bearing disconnect-type agitator mechanical seal carries out split type design installation with bearing assembly and seal assembly.

In order to solve the technical problem, the technical scheme of the utility model is to adopt a mechanical seal of a bearing separation type stirrer, which comprises a shaft sleeve fixedly sleeved on a main shaft and a movable ring and a static ring which are mutually matched and sealed; the movable ring is fixed on the shaft sleeve, the static ring is connected with the pump shell through the flushing water jacket, and the rear end of the static ring is provided with a compensating spring; the method is characterized in that: a bearing is fixedly sleeved on the main shaft behind the shaft sleeve; the outer ring surface of the bearing is fixedly connected with the bearing seat, and the rear end of the bearing is provided with a sealing cover; the flushing water jacket, the bearing seat and the sealing cover are connected through bolts.

As an improvement, the rear end of the shaft sleeve is provided with a positioning ring. For fixing the position of the sleeve.

As a further improvement, the rear end of the flushing water jacket is sealed by a framework oil seal. The framework oil seal is used for sealing washing water.

As another further improvement, framework oil seals are arranged on the inner annular surfaces of the bearing seat and the sealing cover. For sealing the lubricating oil that provides lubrication to the bearings.

The utility model discloses an useful part lies in: the mechanical seal with the structure has the advantages that the bearing assembly and the sealing assembly are designed in a split mode, so that the whole mechanical seal can be respectively transported and installed, and the labor intensity of workers is reduced. Meanwhile, the bearing does not need to be installed on the shaft sleeve, so that the sealing ring is more convenient and quicker to detach and replace, and the time for maintaining equipment is saved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The labels in the figure are: the device comprises a bearing seat 1, a flushing water jacket 2, a shaft sleeve 3, a main shaft 4, a bearing 5, a movable ring 6, a stationary ring 7, a sealing cover 8, a framework oil seal 9, a bolt 10 and a positioning ring 11.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the specific embodiments.

As shown in fig. 1, the utility model comprises a shaft sleeve 3 fixedly sleeved on a main shaft 4, a movable ring 6 and a stationary ring 7 which are mutually matched and sealed; the rear end of the shaft sleeve 3 is provided with a positioning ring 11. The movable ring 6 is fixed on the shaft sleeve 3, the static ring 7 is connected with the pump shell through the washing water jacket 2, and the rear end of the static ring 7 is provided with a compensation spring; a bearing 5 is fixedly sleeved on the main shaft 4 behind the shaft sleeve 3; the outer ring surface of the bearing 5 is fixedly connected with the bearing seat 2, and the rear end of the bearing 5 is provided with a sealing cover 8; the flushing water jacket 2, the bearing seat 1 and the sealing cover 8 are connected by bolts 10.

The rear end of the flushing water jacket 2 is sealed by a framework oil seal 9. And framework oil seals are arranged on the inner annular surfaces of the bearing seat 1 and the sealing cover 8.

When the sealing device works, the movable ring 6 and the static ring 7 are matched and sealed. The bearing 5 is installed on the main shaft 4, and the bearing seat 1 and the sealing cover 8 are connected with the washing water jacket 2 by bolts 10 to form an integral body. When the bearing assembly is disassembled, the bearing assembly (comprising the bearing 5, the bearing seat 1 and the cover 8) and the sealing assembly (the movable ring 6, the static ring 7, the compensating spring, the flushing water jacket 2 and the like) can be separated only by disassembling the bolt 10.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims

1. A mechanical seal of a bearing separation type stirrer comprises a shaft sleeve fixedly sleeved on a main shaft, and a movable ring and a stationary ring which are mutually matched and sealed; the movable ring is fixed on the shaft sleeve, the static ring is connected with the pump shell through the flushing water jacket, and the rear end of the static ring is provided with a compensating spring; the method is characterized in that: a bearing is fixedly sleeved on the main shaft behind the shaft sleeve; the outer ring surface of the bearing is fixedly connected with the bearing seat, and the rear end of the bearing is provided with a sealing cover; the flushing water jacket, the bearing seat and the sealing cover are connected through bolts.

2. The bearing split agitator mechanical seal of claim 1, wherein: and the rear end of the shaft sleeve is provided with a positioning ring.

3. The bearing split agitator mechanical seal of claim 1, wherein: the rear end of the flushing water jacket is sealed by a framework oil seal.

4. The bearing split agitator mechanical seal of claim 1, wherein: and framework oil seals are arranged on the inner annular surfaces of the bearing seat and the sealing cover.