CN217463220U

CN217463220U - Shaft sleeve for mechanical seal

Info

Publication number: CN217463220U
Application number: CN202220397693.2U
Authority: CN
Inventors: 金莲忠
Original assignee: Jiashan Tianyu New Material Co ltd
Current assignee: Jiashan Tianyu New Material Co ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-09-20
Anticipated expiration: 2032-02-25

Abstract

The utility model discloses a shaft sleeve for mechanical seal, including shaft sleeve, holding ring, spring, rotating ring, quiet ring, gland, shaft sleeve, holding ring, spring, rotating ring, quiet ring set gradually on the main shaft, the bottom and the holding ring butt of shaft sleeve, the bottom and the spring butt of holding ring, the bottom and the gland butt of spring, the inner wall and the rotating ring and the quiet ring contact of gland, the bottom and the quiet ring contact of rotating ring; the novel spindle is characterized in that a fixing groove is formed in the spindle sleeve, a buffer ring is arranged in the fixing groove and used for reducing friction between the spindle sleeve and the spindle, a spindle sleeve sealing ring is further arranged in the spindle sleeve, the outer wall of the spindle sleeve sealing ring is connected with the spindle sleeve, and the inner wall of the spindle sleeve sealing ring is in contact with the spindle. Be provided with buffering circle and axle sleeve sealing washer in the axle sleeve, can reduce the wearing and tearing between axle sleeve and the main shaft, improve the life of axle sleeve.

Description

Shaft sleeve for mechanical seal

Technical Field

The utility model relates to a mechanical seal technical field especially involves a shaft sleeve for mechanical seal.

Background

The mechanical seal is a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in fit and relatively slide under the action of fluid pressure and the elasticity of a compensation mechanism and the cooperation of an auxiliary seal.

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.

In the use process of the existing mechanical seal, the rotation of a shaft can cause repeated impact abrasion in the shaft sleeve, further cause the damage of the shaft sleeve and require frequent replacement, so that the structure is needed to be improved to overcome the defects.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a shaft sleeve for mechanical seal, current mechanical seal in the use, the rotation of axle can cause repeated impact wear in the axle sleeve, and then causes the axle sleeve to damage, the problem that needs frequent change.

The above technical purpose of the utility model is realized with following technical scheme:

a shaft sleeve for mechanical sealing comprises a shaft sleeve, a positioning ring, a spring, a movable ring, a static ring and a gland, wherein the shaft sleeve, the positioning ring, the spring, the movable ring and the static ring are sequentially arranged on a main shaft;

the novel spindle is characterized in that a fixing groove is formed in the spindle sleeve, a buffer ring is arranged in the fixing groove and used for reducing friction between the spindle sleeve and the spindle, a spindle sleeve sealing ring is further arranged in the spindle sleeve, the outer wall of the spindle sleeve sealing ring is connected with the spindle sleeve, and the inner wall of the spindle sleeve sealing ring is in contact with the spindle.

The utility model discloses a further set up to: the inner wall of the movable ring is provided with an installation groove, and a movable ring sealing ring is arranged in the installation groove.

The utility model discloses a further set up to: and a static ring sealing ring is arranged on the outer side of the static ring.

The utility model discloses a further set up to: the movable ring, the static ring and the shaft sleeve are all made of pressureless sintered silicon carbide.

The utility model discloses a further set up to: the buffer ring is made of rubber.

The utility model discloses a further set up to: the shaft sleeve sealing ring is made of alumina ceramics.

To sum up, the utility model discloses following beneficial effect has:

be provided with buffering circle and axle sleeve sealing washer in the axle sleeve, can reduce the wearing and tearing between axle sleeve and the main shaft, improve the life of axle sleeve, the axle sleeve adopts non-pressure sintering carborundum material to make, itself has good wear resistance, can reduce the wearing and tearing in the use.

Drawings

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

Fig. 2 is a partial enlarged view of the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the drawings and the specific embodiments.

As shown in fig. 1 to 2, the present invention provides a shaft sleeve for mechanical seal, including a shaft sleeve 11, a positioning ring 13, a spring 14, a moving ring 16, a stationary ring 19, and a gland 15, wherein the shaft sleeve 11, the positioning ring 13, the spring 14, the moving ring 16, and the stationary ring 19 are sequentially disposed on a main shaft 10, the bottom of the shaft sleeve 11 abuts against the positioning ring 13, the bottom of the positioning ring 13 abuts against the spring 14, the bottom of the spring 14 abuts against the gland 15, the inner wall of the gland 15 contacts with the moving ring 16 and the stationary ring 19, and the bottom of the moving ring 16 contacts with the stationary ring 19;

the inner part of the shaft sleeve 11 is provided with a fixing groove, a buffer ring 20 is arranged in the fixing groove and used for reducing friction between the shaft sleeve 11 and the main shaft 10, the inner part of the shaft sleeve 11 is also provided with a shaft sleeve sealing ring 12, the outer wall of the shaft sleeve sealing ring 12 is connected with the shaft sleeve 11, and the inner wall of the shaft sleeve sealing ring 12 is contacted with the main shaft 10.

The utility model discloses a further set up to: the inner wall of the moving ring 16 is provided with a mounting groove, and a moving ring sealing ring 17 is arranged in the mounting groove.

The utility model discloses a further set up to: and a static ring sealing ring 18 is arranged on the outer side of the static ring 19.

The utility model discloses a further set up to: the dynamic ring 16, the static ring 19 and the shaft sleeve 11 are all made of pressureless sintered silicon carbide.

The utility model discloses a further set up to: the cushion ring 20 is made of rubber.

The utility model discloses a further set up to: the shaft sleeve sealing ring 12 is made of alumina ceramics.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the designated devices or elements must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art. As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The shaft sleeve for mechanical sealing is characterized by comprising a shaft sleeve (11), a positioning ring (13), a spring (14), a moving ring (16), a static ring (19) and a gland (15), wherein the shaft sleeve (11), the positioning ring (13), the spring (14), the moving ring (16) and the static ring (19) are sequentially arranged on a main shaft (10), the bottom of the shaft sleeve (11) is abutted against the positioning ring (13), the bottom of the positioning ring (13) is abutted against the spring (14), the bottom of the spring (14) is abutted against the gland (15), the inner wall of the gland (15) is contacted with the moving ring (16) and the static ring (19), and the bottom of the moving ring (16) is contacted with the static ring (19);

the novel spindle is characterized in that a fixing groove is formed in the shaft sleeve (11), a buffer ring (20) is arranged in the fixing groove and used for reducing friction between the shaft sleeve (11) and the spindle (10), a shaft sleeve sealing ring (12) is further arranged in the shaft sleeve (11), the outer wall of the shaft sleeve sealing ring (12) is connected with the shaft sleeve (11), and the inner wall of the shaft sleeve sealing ring (12) is in contact with the spindle (10).

2. The shaft sleeve for mechanical seal according to claim 1, wherein the inner wall of the rotating ring (16) is provided with an installation groove, and a rotating ring sealing ring (17) is arranged in the installation groove.

3. A sleeve for mechanical seal according to claim 1, wherein the stationary ring (19) is provided with a stationary ring seal (18) on the outside.

4. The shaft sleeve for mechanical seal according to claim 1, wherein the dynamic ring (16), the static ring (19) and the shaft sleeve (11) are all made of pressureless sintered silicon carbide.

5. A sleeve for mechanical seal according to claim 1, wherein said cushion ring (20) is made of rubber.

6. The shaft sleeve for mechanical seal according to claim 1, wherein the shaft sleeve sealing ring (12) is made of alumina ceramic.