CN210068933U

CN210068933U - Mechanical seal

Info

Publication number: CN210068933U
Application number: CN201920612735.8U
Authority: CN
Inventors: 陈益春
Original assignee: Wenzhou Risheng Seal Manufacturing Co Ltd
Current assignee: Wenzhou Risheng Seal Manufacturing Co Ltd
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-02-14
Anticipated expiration: 2029-04-29

Abstract

The utility model discloses a mechanical seal, including rotating ring seat, rotating ring, spring and spring holder, the rotating ring seat is ring shape setting, is equipped with the ring channel on the outer rampart of rotating ring seat, still is equipped with the logical groove of four at least intercommunication ring channels and interior rampart in the rotating ring seat, it is equipped with the ball to lead to the inslot, the opening bore that leads to the groove is less than the diameter of ball, the opening that leads to the groove is located one side of ring channel diapire, is equipped with the screw thread on the opposite side, ring channel female thread fit has the adjustable ring, the adjustable ring is close to and is equipped with on leading to groove open-ended side and supports the clamping ring, the interior rampart and the ball of supporting the clamping ring are. After improvement, the sealing performance of the mechanical seal is improved, and the product quantity is increased.

Description

Mechanical seal

Technical Field

The utility model relates to a seal part field, more specifically says that it relates to a mechanical seal.

Background

The mechanical seal mainly comprises the seal between the rotating shaft and the sealing element, the seal between the movable ring and the static ring of the sealing element, and the seal between the sealing element and the mounting hole position. When the working surface of the movable ring and the working surface of the static ring work under the condition of relatively high-speed rotation, because the power for rotating the movable ring generally comes from a main shaft of a motor, vibration in the rotating process is inevitable, the frequency of the vibration is usually high, and an elastic part, such as a spring or a bellows, is generally arranged in the mechanical seal in the axial direction, so that compensation is provided for the vibration in the axial direction.

However, after the shaft and the moving ring of the sealing element work in a long-term vibration environment, looseness can easily occur, and a gap is easily generated between the shaft and the moving ring, so that suspended particles in liquid enter a sealing surface, and the sealing reliability is greatly reduced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a sealing performance is good, the mechanical seal that can adjust.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the mechanical seal comprises a movable ring seat, a movable ring, a spring and a spring seat, wherein the movable ring seat is arranged in a circular ring shape, an annular groove is formed in the outer annular wall of the movable ring seat, at least four through grooves communicated with the annular groove and the inner annular wall are further formed in the movable ring seat, balls are arranged in the through grooves, the opening calibers of the through grooves are smaller than the diameters of the balls, the openings of the through grooves are located on one side of the bottom wall of the annular groove, threads are arranged on the other side of the bottom wall of the annular groove, an adjusting ring is matched with the inner threads of the annular groove, a pressing ring is arranged on one side, close to the opening of the through grooves, of the.

The utility model discloses further set up to: the ball includes half body and lower half body on being the hemisphere setting, be equipped with the elastic ring between half body and the lower half body.

The utility model discloses further set up to: the annular groove is covered with an annular cover plate, an annular clamping groove for the annular cover plate to be embedded is arranged on one side wall of the annular groove, and a raised annular clamping ring is arranged on the other side wall of the annular groove.

By adopting the technical scheme, when the movable ring and the movable ring seat are loosened, the pressing ring can extrude the ball to move towards the inner ring wall of the movable ring through screwing the adjusting ring, so that the effect of firmly pressing against the movable ring is achieved, the sealing performance between the movable ring and the shaft can be enhanced, and the sealing performance and the service life of the whole product are improved.

Drawings

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

FIG. 2 is an exploded view of the rotating ring seat;

fig. 3 is a partial sectional view of the first embodiment of the present invention;

fig. 4 is a partial sectional view of the present invention.

1. A movable ring seat; 10. an annular groove; 11. a through groove; 12. an annular neck; 13. an annular collar; 2. a moving ring; 3. a spring; 4. a spring seat; 5. a ball bearing; 50. an upper half body; 51. a lower half body; 52. an elastic ring; 6. an adjusting ring; 60. pressing the ring; 7. an annular cover plate.

Detailed Description

The mechanical seal embodiment of the present invention is further described with reference to fig. 1 to 4.

The mechanical seal comprises a movable ring seat 1, a movable ring 2, a spring 3 and a spring seat 4, wherein the movable ring seat 1 is arranged in a ring shape, an annular groove 10 is formed in the outer annular wall of the movable ring seat 1, at least four through grooves 11 communicated with the annular groove 10 and the inner annular wall are further formed in the movable ring seat 1, balls 5 are arranged in the through grooves 11, the opening caliber of each through groove 11 is smaller than the diameter of each ball 5, the opening of each through groove 11 is located on one side of the bottom wall of the corresponding annular groove 10, threads are arranged on the other side of the bottom wall of the corresponding annular groove 10, an adjusting ring 6 is matched with the threads in the annular groove 10, a pressing ring 60 is arranged on one side, close to the opening of the corresponding annular groove 11, of the inner annular wall of. The ball 5 comprises an upper half body 50 and a lower half body 51 which are arranged in a hemispherical shape, and an elastic ring 52 is arranged between the upper half body 50 and the lower half body 51. The annular groove 10 is covered with an annular cover plate 7, one side wall of the annular groove 10 is provided with an annular clamping groove 12 for the annular cover plate 7 to be embedded, and the other side wall is provided with a raised annular clamping ring 13.

The rotating ring 2 is a rubber ring, after long-term operation, the rotating ring 2 is loosened with the shaft, the pressing ring 60 on the adjusting ring 6 is driven to displace by screwing the adjusting ring 6, the pressing ring 60 is obliquely arranged with the surface of the ball 5, the pressing ring 60 is closer to the ball 5, more parts of the ball 5 can be driven to be pressed towards the rotating ring 2, and the tightness between the rotating ring 2 and the shaft is better. The sealing ring is suitable for sealing a sealing piece loosened after long-term use, and then the annular groove 10 is sealed through the annular cover plate 7. One end of the annular cover plate 7 is clamped in the annular clamping groove 12, and the other end of the annular cover plate is clamped and limited through the annular clamping ring 13, so that the installation work of the annular cover plate 7 can be completed. An elastic ring 52 is arranged between the upper half body 50 and the lower half body 51 of the ball 5, so that the tightness of the ball 5 when being pressed against a shaft can be improved, and meanwhile, the vibration force generated during working can be buffered, and the sealing performance of the whole sealing element is better.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a mechanical seal, includes rotating ring seat, rotating ring, spring and spring holder, its characterized in that: the movable ring seat is arranged in a ring shape, an annular groove is formed in the outer annular wall of the movable ring seat, at least four through grooves communicated with the annular groove and the inner annular wall are further formed in the movable ring seat, balls are arranged in the through grooves, the opening caliber of each through groove is smaller than the diameter of each ball, the opening of each through groove is located on one side of the bottom wall of the corresponding annular groove, threads are arranged on the other side of the bottom wall of the corresponding annular groove, an adjusting ring is in threaded fit with the annular groove, a pressing ring is arranged on one side face, close to the opening of the corresponding through groove, of the adjusting ring, the inner.

2. A mechanical seal according to claim 1, wherein: the ball includes half body and lower half body on being the hemisphere setting, be equipped with the elastic ring between half body and the lower half body.

3. A mechanical seal according to claim 2, wherein: the annular groove is covered with an annular cover plate, an annular clamping groove for the annular cover plate to be embedded is arranged on one side wall of the annular groove, and a raised annular clamping ring is arranged on the other side wall of the annular groove.