CN212745053U

CN212745053U - Mechanical seal with high stability

Info

Publication number: CN212745053U
Application number: CN202021521761.9U
Authority: CN
Inventors: 张竺翔; 王斌; 邬晨辉
Original assignee: Ningbo Anmu Sealing Technology Co ltd
Current assignee: Ningbo Anmu Sealing Technology Co ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2021-03-19
Anticipated expiration: 2030-07-24

Abstract

The utility model provides a mechanical seal with high stability belongs to mechanical seal technical field. It has solved the current poor problem of mechanical seal stability. The utility model relates to a mechanical seal with high stability includes axis body, quiet ring holder, rotating ring holder, bellows, bottom tube, card pipe, quiet ring, supporting seat, spring and rotating ring. Wherein, make up into a whole through the part with supporting seat, card pipe, quiet ring and bottom tube for quiet ring is when bearing the torsion of rotating ring, and supporting seat, snap ring and bottom ring are also corresponding shares suitable torsion, thereby make whole bellows in the use, be difficult for being damaged, secondly, make bellows and quiet ring in the use, have better stability, so, prolonged the life of this bellows.

Description

Mechanical seal with high stability

Technical Field

The utility model belongs to the technical field of mechanical seal spare, a mechanical seal with high stability is related to.

Background

Mechanical seals are widely used in pumps, compressors, and mixing machines. The leakage path between a rotating part (such as a shaft) and a static structure cavity is cut off, and harmful media in the cavity are prevented from leaking to the outside. The mechanical seal is typically comprised of a moving component fixed to the shaft and a stationary component fixed to the housing.

The static mechanical seal is a common mechanical seal element and comprises a rubber bellows seal ring, a pressure element, a pair of metal seats capable of transmitting torque, a spring seat and a seal ring; the movable assembly is relatively simple and consists of a movable ring and a rubber sealing element. The dynamic ring and the static ring are a pair of friction pairs with high flatness, and form a sealing surface under the action of a pressure element. The clearance between the two parts in relative rotation is in the micron order, so that the leakage of the internal fluid from the sealing surface can be effectively prevented. The springs of the static assembly are compressed during installation to provide a positive pressure on the sealing surfaces. This positive pressure must offset the thrust that sealed inside fluid pressure caused and just can keep sealed face closed, but mechanical seal of this type is when the equipment, and rubber bellows is direct mount on quiet ring seat, and when leading to the torsion of quiet ring driven ring, rubber bellows takes place easily to be driven, promptly for the condition that skids takes place for rubber bellows and quiet ring seat, causes rubber bellows wearing and tearing to become invalid.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a mechanical seal with high stability.

The purpose of the utility model can be realized by the following technical proposal: a mechanical seal having high stability, comprising:

axis body, quiet ring seat and rotating ring seat all overlap and are established on the axis body, its characterized in that:

the corrugated pipe is sleeved on the side surface of the static ring seat and comprises a bottom pipe and a clamping pipe, the bottom pipe and the clamping pipe are integrally formed, the static ring is clamped inside the clamping pipe, a supporting seat is sleeved on the outer side of the clamping pipe, and one end, close to the clamping pipe, of the bottom pipe is connected with the supporting seat;

the spring is arranged between the bottom tube and the supporting seat;

the movable ring is clamped in the movable ring seat and is in contact with the static ring.

In the above mechanical seal with high stability, an anti-drop ring for preventing the tube clamping from deforming is arranged at one end of the support seat away from the bottom tube.

In the above mechanical seal with high stability, one end of the support seat close to the bottom tube is inserted into the fastening ring, the fastening ring is connected with the bottom tube through glue, and the support seat moves relative to the fastening ring.

In the mechanical seal with high stability, the bottom tube is provided with a spring seat for connecting a spring.

In the above mechanical seal with high stability, the bottom surface of the bottom tube is provided with at least two filling grooves.

In the above mechanical seal with high stability, the filling groove is filled with glue.

In the above mechanical seal with high stability, the rotating ring is vulcanized.

In one of the above mechanical seals with high stability, the bellows is made of rubber.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses in, make up into a whole through the part with supporting seat, card pipe, quiet ring and bottom tube for quiet ring is when bearing the torsion of rotating ring, and supporting seat, snap ring and bottom ring are also corresponding shares suitable torsion, thereby makes whole bellows in the use, is difficult for being damaged, secondly, makes bellows and quiet ring in the use, has better stability, so, has prolonged the life of this bellows.

2. Block the outside motion of card pipe through supporting seat and anticreep ring, effectively increased the leakproofness between card pipe and the quiet ring, simultaneously, also increased the stability of being connected between card pipe and the quiet ring.

3. At least two filling grooves have been seted up to the bottom surface of bottom tube, and the filling inslot is filled with glue, through the setting of this structure, has effectively increased fastness and stability between bottom tube and the quiet ring seat for this mechanical seal is at the during operation, and the bottom tube can be static relative quiet ring seat all the time.

Drawings

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

Fig. 2 is a partial structural schematic view of fig. 1.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-2, the mechanical seal with high stability of the present invention includes a shaft body 100, a stationary seat 200, a movable seat 400, a bellows 300, a bottom tube 310, a clamping tube 320, a stationary ring 321, a supporting seat 322, a spring 210, and a movable ring 410.

The static ring seat 200 and the moving ring seat 400 are both sleeved on the shaft body 100, the corrugated tube 300 is sleeved on the side surface of the static ring seat 200, the corrugated tube 300 comprises a bottom tube 310 and a clamping tube 320, the bottom tube 310 and the clamping tube 320 are integrally formed, a static ring 321 is clamped inside the clamping tube 320, a support seat 322 is sleeved outside the clamping tube 320, one end of the bottom tube 310 close to the clamping tube 320 is connected with the support seat 322, the spring 210 is installed between the bottom tube 310 and the support seat 322, the moving ring 410 is clamped in the moving ring seat 400, the moving ring 410 is in contact with the static ring 321, the moving ring 410 moves relative to the static ring 321 in the working process, and in the process, the static ring seat 200 is static relative to the shaft body 100, so that the spring 210 always has a certain elasticity on the support seat 322, so as to ensure the sealing performance between the moving ring 410 and the static ring 321, and then, the support seat 322 wraps the clamping tube 320 because the static ring 321 is clamped in the clamping tube 320, and one end of the supporting seat 322 is movably connected with one end of the bottom tube 310 close to the clamping tube 320, so that the supporting seat 322, the clamping tube 320, the stationary ring 321 and the bottom tube 310 can be integrated, and therefore when the stationary ring 321 bears the torsion of the moving ring 410, the supporting seat 322, the clamping ring and the bottom ring correspondingly share the appropriate torsion, so that the whole corrugated tube 300 is not easily damaged in the using process, and secondly, the corrugated tube 300 and the stationary ring 321 have better stability in the using process, so that the service life of the corrugated tube 300 is prolonged.

One end that supporting seat 322 kept away from bottom tube 310 is equipped with the anticreep ring 322a that is used for preventing card pipe 320 deformation, in the process of the relative quiet ring 321 motion of rotating ring 410, block in card pipe 320 all the time because of quiet ring 321, supporting seat 322 and anticreep ring 322a cover are in the snap ring outside all the time, make supporting seat 322 and anticreep ring 322a block card pipe 320 and move to the outside, so, effectively increased the leakproofness between card pipe 320 and the quiet ring 321, and simultaneously, the stability of being connected between card pipe 320 and the quiet ring 321 has also been increased.

The side cover of bottom tube 310 is equipped with fastening ring 311, the one end that supporting seat 322 is close to bottom tube 310 is inserted and is located fastening ring 311, be connected through glue between fastening ring 311 and the bottom tube 310, the relative fastening ring of supporting seat removes, when the installation, one end that people need keep away from anticreep ring 322a with supporting seat 322 is inserted and is located in fastening ring 311, and overlap fastening ring 311 at the one end that bottom tube 310 is close to card pipe 320, and fill glue between fastening ring 311 and bottom tube 310, so that fastening ring 311 can stabilize the cover and fix on bottom tube 310, thereby make supporting seat 322, fastening ring 311 and bottom tube 310 be close to the one end three of card pipe 320 and can stably connect, so, the fastness of bellows 300 in the use has further been strengthened.

An annular groove 312 for installing the fastening ring 311 is formed in the side surface of the bottom tube 310, and the fastening ring 311 is clamped in the annular groove 312, so that the fastening ring 311 is prevented from sliding on the bottom tube 310 when the spring 210 gives a certain elastic force to the supporting seat 322.

Be equipped with the spring holder 220 that is used for connecting spring 210 on the bottom tube 310, during the installation, people need install spring holder 220 on bellows 300 to support the one end of spring 210 on spring holder 220, the other end of spring 210 supports on supporting seat 322, and insert the side of locating the tighrening ring with the one end of spring, make this mechanical seal during operation, spring 210 can continue to provide elasticity for supporting seat 322, in order to guarantee the leakproofness between quiet ring 321 and the rotating ring 410.

At least two filling grooves 313 have been seted up to bottom tube 310's bottom surface, and the filling is filled with glue in filling groove 313, and through the setting of this structure, effectively increased fastness and stability between bottom tube 310 and stationary ring seat 200 for this mechanical seal is at the during operation, and bottom tube 310 can be static relatively stationary ring seat 200 all the time.

The utility model discloses in, vulcanize also known as cross-linking, curing, add crosslinking adjuvant such as vulcanizer and promoter in rubber, under certain temperature, pressure condition, make the process that the line type macromolecule changed into three-dimensional network structure, owing to adopt sulphur to realize natural rubber's cross-linking at the earliest, so called vulcanize, and the rotating ring 410 after the vulcanization processing has effectively increased the area of contact between rotating ring 410 and the quiet ring 321 to reduce the possibility of leaking between fluid driven ring 410 and the quiet ring 321.

The bellows 300 is made of rubber so that the bellows 300 has a certain flexibility, and thus, when the spring 210 gives an elastic force to the supporting seat 322, the joint of the bottom tube 310 and the clip tube is stretched by a certain length in the axial direction of the shaft body, and at the same time, the end of the supporting seat inserted into the fastening ring moves outward of the fastening ring to increase the sealability between the stationary ring 321 and the movable ring 410, but in the process, the end of the supporting seat inserted into the fastening ring is still inserted into the fastening ring.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A mechanical seal having high stability, comprising: axis body, quiet ring seat and rotating ring seat all overlap and are established on the axis body, its characterized in that:

the spring is arranged between the bottom tube and the supporting seat;

2. A mechanical seal with high stability according to claim 1, wherein the end of the supporting seat away from the bottom tube is provided with a slip-off preventing ring for preventing the deformation of the clamping tube.

3. A mechanical seal with high stability as claimed in claim 1, wherein a fastening ring is sleeved on the side of the bottom tube, one end of the supporting seat near the bottom tube is inserted into the fastening ring, the fastening ring and the bottom tube are connected by glue, and the supporting seat moves relative to the fastening ring.

4. A mechanical seal with high stability according to claim 1, wherein the bottom tube is provided with a spring seat for connecting a spring.

5. A mechanical seal with high stability according to claim 1, wherein the bottom surface of the bottom tube is provided with at least two filling grooves.

6. A mechanical seal with high stability according to claim 5, wherein said filling groove is filled with glue.

7. A mechanical seal with high stability according to claim 1, wherein said rotating ring is vulcanized.

8. A mechanical seal of high stability according to claim 1, wherein said bellows is made of rubber.