CN222334495U

CN222334495U - Pressure-adjustable mechanical sealing element

Info

Publication number: CN222334495U
Application number: CN202421183259.XU
Authority: CN
Inventors: 徐卫忠
Original assignee: Zhangjiagang Xingyu Petrochemical Machinery Co ltd
Current assignee: Zhangjiagang Xingyu Petrochemical Machinery Co ltd
Priority date: 2024-05-28
Filing date: 2024-05-28
Publication date: 2025-01-10
Anticipated expiration: 2034-05-28

Abstract

The utility model relates to the technical field of mechanical sealing elements, in particular to a pressure-adjustable mechanical sealing element which comprises a rotating shaft, a base and an adjusting component, wherein the base is arranged on the surface of the rotating shaft, a movable ring module is arranged on the surface of the rotating shaft, a static ring is arranged on the inner wall of the base, the static ring is sleeved on the surface of the rotating shaft, the static ring is abutted against the sealing end of the movable ring module, the adjusting component is arranged on the surface of the rotating shaft, the adjusting component comprises a limiting unit, the limiting unit comprises a T-shaped lantern ring, the T-shaped lantern ring is sleeved with the surface of the rotating shaft, a threaded hole is formed in the outer circumference of the T-shaped lantern ring, and a locking gasket is arranged on the inner wall of the T-shaped lantern ring, which is positioned in the threaded hole. According to the utility model, the adjusting assembly is arranged, so that the adjustment operation of the mechanical sealing element is more convenient, the problems of complicated adjusting structure and poor applicability of the mechanical sealing element are reduced, and the applicability and the adjusting efficiency of the mechanical sealing element are further improved.

Description

Pressure-adjustable mechanical sealing element

Technical Field

The utility model relates to the technical field of mechanical sealing elements, in particular to a pressure-adjustable mechanical sealing element.

Background

The mechanical sealing element belongs to one of precise and complex mechanical basic elements, is a key component of various pumps, reaction synthesis kettles, turbine compressors, submersible motors and other equipment, can effectively prevent sealed mediums (such as liquid, gas and the like) from leaking from a gap between a rotating shaft and a static component, ensures the sealing performance of equipment or a system, maintains normal working pressure and prevents medium loss.

The prior art is such as the utility model of publication number CN117869590A, this patent discloses a pressure adjustable mechanical seal, this patent adopts the sealed axle, the inside of sealed axle is provided with adjusting part, be provided with fixed subassembly on the outer wall of sealed axle, the sealed axle is pegged graft in sealing part's inside, adjusting part includes the slot, the slot is seted up in sealed axle's one end, the inside grafting of slot has the inserted bar, first screw has been seted up to the one end of inserted bar, the inside threaded connection of first screw has first screw, the upper end sliding connection of first screw is inside first double-layered groove, drive the inserted bar through promoting first screw and remove, the inserted bar drives the second screw and removes, the second screw promotes the lantern ring, and then adjust the lantern ring to the extrusion of spring, make the elasticity of spring change, just so can adjust the pressure to the slip ring, make slip ring and taper ring keep a stable extrusion state, so can solve the problem that the slip ring wearing and tearing are serious or seal shape is not enough, the sealing ring is pegged graft through compensating mechanism to the sealing ring, make the mechanical seal keep sufficient sealing effect always, but if the pressure that the spring provided is too low, the sealing ring's pressure that can cause the sealing ring is too low, the sealing ring's that the sealing ring is damaged, if the face is provided, the frictional effect that can be reduced when the friction is provided, the plane is damaged, if the sealing ring is damaged, can be caused by the surface, the friction effect is greatly is reduced.

The inventor finds that in daily work, in the process of sealing equipment by means of a mechanical sealing element, the existing adjustable mechanical sealing element has the problems that the design of an adjusting structure is complex, the use and the operation are complicated, and when the mechanical sealing element is designed, a part of the structure is positioned in a rotating shaft, so that the setting of the adjusting structure is difficult, and when the mechanical sealing element faces a rotating shaft with standard specification, the adjusting structure is difficult to realize an adjusting effect, so that the applicability of the adjusting structure is poor, and the popularization and the utilization are difficult.

Disclosure of utility model

The utility model aims to solve the defects that in the prior art, when a rotating shaft facing standard specifications exists, an adjusting structure is difficult to realize an adjusting effect, so that the applicability of the adjusting structure is poor and the adjusting structure is difficult to popularize and utilize.

In order to achieve the aim, the pressure-adjustable mechanical sealing element comprises a rotating shaft, a base and an adjusting component, wherein the base is arranged on the surface of the rotating shaft, a movable ring module is arranged on the surface of the rotating shaft, a static ring is arranged on the inner wall of the base and sleeved on the surface of the rotating shaft, the static ring is abutted to the sealing end of the movable ring module, and the adjusting component is arranged on the surface of the rotating shaft;

The adjusting assembly comprises a limiting unit, the limiting unit comprises a T-shaped lantern ring, the T-shaped lantern ring is sleeved with the surface of the rotating shaft, a threaded hole is formed in the outer circumference of the T-shaped lantern ring, a locking gasket is mounted on the inner wall of the threaded hole of the T-shaped lantern ring, a fastening bolt is connected with the inner wall of the threaded hole in a threaded manner, the fastening bolt is abutted to the cambered surface of the rotating shaft, a groove is formed in the outer circumference of the T-shaped lantern ring, and a limiting hole is formed in the side surface of the T-shaped lantern ring;

The adjusting component further comprises an extrusion unit, the extrusion unit comprises a guide post, the guide post is fixedly connected with the side surface of the T-shaped lantern ring, a guide sleeve is sleeved on the surface of the guide post, an extrusion ring is fixedly connected with the side surface of the guide sleeve, the extrusion ring is abutted against the side surface of the movable ring module, a threaded sleeve is fixedly connected with the side surface of the extrusion ring, an adjusting bolt is connected with the inner wall of the T-shaped lantern ring, which is located in the limiting hole, in a rotating mode, and the adjusting bolt is in threaded connection with the inner wall of the threaded sleeve.

Preferably, the number of the threaded holes is three, the three threaded holes are arranged in a circumferential array with respect to the T-shaped lantern ring, and the operator can install the fastening bolt through the threaded holes formed in the surface of the T-shaped lantern ring, so that the fastening bolt can be screwed into the threaded holes, and the T-shaped lantern ring is locked on the surface of the rotating shaft.

Preferably, the locking gasket is sleeved with the threaded portion of the fastening bolt, the number of the fastening bolts is three, the fastening bolts are arranged in a circumferential array with respect to the rotating shaft, the fastening bolts are in butt joint with the surface of the locking gasket, and the stability of the fastening bolts in a fastening state can be improved and the firmness of the fastening bolts is improved through the locking gasket arranged on the surface of the fastening bolts.

Preferably, the groove is located under the limiting hole, the inner wall of the groove is arc-shaped, and the groove is formed under the limiting hole, so that a worker can insert a tool into a groove hole on the surface of the adjusting bolt, and adjustment operation is performed.

Preferably, the number of the guide posts is two, the two guide posts are arranged in bilateral symmetry with respect to the rotating shaft, the guide sleeve is matched with the number of the guide posts, and the position of the extrusion ring can be restrained through the matching of the guide sleeve and the guide posts, so that the stability of the extrusion ring in a moving state is ensured.

Preferably, the extrusion ring is sleeved on the surface of the rotating shaft, the height of the threaded sleeve is equal to that of the guide sleeve, and the extrusion ring arranged at the joint of the rotating shaft and the movable ring module can be matched with the adjusting bolt and the threaded sleeve to extrude the movable ring module when the adjusting bolt is rotated by a worker, so that the moving range of the movable ring module is adjusted, and the pressure of the sealing piece is adjusted.

Compared with the prior art, the utility model has the advantages and positive effects that:

According to the utility model, when the pressure of the mechanical sealing element is required to be regulated by arranging the regulating component, the regulating bolt is rotated under the constraint of the T-shaped lantern ring, the regulating bolt is meshed with the threaded sleeve when rotating, the threaded sleeve is meshed with the regulating bolt to push the extrusion ring, the extrusion ring is displaced under the guidance of the guide sleeve and the guide post, the moving ring module is extruded in the moving process, the movable distance of the moving ring module is compressed under the extrusion of the extrusion ring, meanwhile, the spring in the moving ring module is extruded, the pressure between the moving ring module and the stationary ring is increased, and then the regulation of the pressure of the mechanical sealing element can be realized.

Drawings

FIG. 1 is a schematic perspective view of a mechanical seal with adjustable pressure according to the present utility model;

FIG. 2 is a schematic cross-sectional view of a mechanical seal with adjustable pressure according to the present utility model;

FIG. 3 is a schematic bottom view of a pressure-adjustable mechanical seal according to the present utility model;

FIG. 4 is a schematic view showing an adjusting assembly of a pressure-adjustable mechanical seal according to the present utility model;

Fig. 5 is a schematic view of the structure a in fig. 4 of a pressure-adjustable mechanical seal according to the present utility model.

Legend description:

1. the device comprises a rotating shaft, 2 parts of a base, 3 parts of a moving ring module, 4 parts of a static ring, 5 parts of an adjusting assembly, 51 parts of a limiting unit, 511 parts of a T-shaped lantern ring, 512 parts of a threaded hole, 513 parts of a locking gasket, 514 parts of a fastening bolt, 515 parts of a groove, 516 parts of a limiting hole, 52 parts of an extruding unit, 521 parts of a guide post, 522 parts of a guide sleeve, 523 parts of an extruding ring, 524 parts of a threaded sleeve, 525 parts of an adjusting bolt.

Detailed Description

Referring to fig. 1-5, the utility model provides a pressure-adjustable mechanical sealing element, which comprises a rotating shaft 1, a base 2 and an adjusting component 5, wherein the base 2 is arranged on the surface of the rotating shaft 1, a movable ring module 3 is arranged on the surface of the rotating shaft 1, a static ring 4 is arranged on the inner wall of the base 2, the static ring 4 is sleeved on the surface of the rotating shaft 1, the static ring 4 is abutted to the sealing end of the movable ring module 3, and the adjusting component 5 is arranged on the surface of the rotating shaft 1.

In the embodiment, the adjusting component 5 comprises a limiting unit 51, the limiting unit 51 comprises a T-shaped lantern ring 511, the T-shaped lantern ring 511 is sleeved with the surface of the rotating shaft 1, a threaded hole 512 is formed in the outer circumference of the T-shaped lantern ring 511, a locking gasket 513 is arranged on the inner wall of the T-shaped lantern ring 511 located in the threaded hole 512, a fastening bolt 514 is connected with the inner wall of the T-shaped lantern ring 511 located in the threaded hole 512 in a threaded manner, the fastening bolt 514 abuts against the cambered surface of the rotating shaft 1, a groove 515 is formed in the outer circumference of the T-shaped lantern ring 511, and a limiting hole 516 is formed in the side surface of the T-shaped lantern ring 511;

The adjusting assembly 5 further comprises a squeezing unit 52, the squeezing unit 52 comprises a guide post 521, the guide post 521 is fixedly connected with the side surface of the T-shaped lantern ring 511, a guide sleeve 522 is sleeved on the surface of the guide post 521, a squeezing ring 523 is fixedly connected with the side surface of the guide sleeve 522, the squeezing ring 523 abuts against the side surface of the movable ring module 3, a threaded sleeve 524 is fixedly connected with the side surface of the squeezing ring 523, an adjusting bolt 525 is rotatably connected with the inner wall of the limiting hole 516, and the adjusting bolt 525 is in threaded connection with the inner wall of the threaded sleeve 524.

Specifically, the number of the threaded holes 512 is three, the three threaded holes 512 are arranged in a circumferential array with respect to the T-shaped collar 511, and the fastening bolt 514 can be installed by an operator through the threaded holes 512 formed in the surface of the T-shaped collar 511, so that the fastening bolt 514 can be screwed into the threaded holes 512, and the T-shaped collar 511 is locked on the surface of the rotating shaft 1.

Specifically, the locking washer 513 is sleeved with the threaded portion of the fastening bolts 514, the number of the fastening bolts 514 is three, the three fastening bolts 514 are arranged in a circumferential array with respect to the rotating shaft 1, and the fastening bolts 514 are abutted against the surface of the locking washer 513.

In this embodiment, the stability of the fastening bolt 514 in the fastened state can be increased and the firmness of the fastening bolt 514 can be improved by the anti-loosening washer 513 mounted on the surface of the fastening bolt 514.

Specifically, the groove 515 is located right below the limiting hole 516, the inner wall of the groove 515 is arc-shaped, and the groove 515 is formed right below the limiting hole 516, so that a worker can insert a tool into a slot hole on the surface of the adjusting bolt 525 to perform an adjusting operation.

In this embodiment, the number of the guide posts 521 is two, the two guide posts 521 are symmetrically arranged about the rotation axis 1, and the guide sleeve 522 is matched with the number of the guide posts 521.

In the present embodiment, the position of the pressing ring 523 is restrained by the engagement of the guide sleeve 522 with the guide post 521, and the stability of the pressing ring 523 in the moving state is ensured.

Specifically, the extrusion ring 523 is sleeved on the surface of the rotating shaft 1, the height of the threaded sleeve 524 is equal to that of the guide sleeve 522, and the extrusion ring 523 installed at the joint of the rotating shaft 1 and the movable ring module 3 can be matched with the adjusting bolt 525 and the threaded sleeve 524 to extrude the movable ring module 3 when a worker rotates the adjusting bolt 525, so that the moving range of the movable ring module 3 is adjusted, and the pressure of a sealing element is adjusted.

The mechanical seal pressure adjusting device comprises a working principle that when the pressure of a mechanical seal is required to be adjusted, an adjusting bolt 525 is rotated under the constraint of a T-shaped sleeve ring 511, the adjusting bolt 525 is meshed with a threaded sleeve 524 when being rotated, the threaded sleeve 524 is meshed with the adjusting bolt 525 to push a squeezing ring 523, the squeezing ring 523 is displaced under the guidance of a guiding sleeve 522 and a guiding column 521, a moving ring module 3 is squeezed in the moving process, the moving distance of the moving ring module 3 is compressed under the squeezing of the squeezing ring 523, meanwhile, a spring in the moving ring module 3 is squeezed, the pressure between the moving ring module 3 and a stationary ring 4 is increased, the pressure of the mechanical seal can be adjusted immediately, and by arranging an adjusting assembly 5, the mechanical seal adjusting operation is more convenient, the problems of complicated mechanical seal adjusting structure and poor applicability are further solved, and the applicability and the adjusting efficiency of the mechanical seal are further improved.

Claims

1. The mechanical sealing element with the adjustable pressure comprises a rotating shaft (1), a base (2) and an adjusting component (5), and is characterized in that the base (2) is arranged on the surface of the rotating shaft (1), a movable ring module (3) is arranged on the surface of the rotating shaft (1), a static ring (4) is arranged on the inner wall of the base (2), the static ring (4) is sleeved on the surface of the rotating shaft (1), the static ring (4) is abutted to the sealing end of the movable ring module (3), and the adjusting component (5) is arranged on the surface of the rotating shaft (1);

The adjusting component (5) comprises a limiting unit (51), the limiting unit (51) comprises a T-shaped lantern ring (511), the T-shaped lantern ring (511) is sleeved with the surface of the rotating shaft (1), a threaded hole (512) is formed in the outer circumference of the T-shaped lantern ring (511), a locking gasket (513) is mounted on the inner wall of the threaded hole (512) of the T-shaped lantern ring (511), a fastening bolt (514) is connected with the inner wall of the threaded hole (512) in a threaded mode, the fastening bolt (514) is abutted to the cambered surface of the rotating shaft (1), a groove (515) is formed in the outer circumference of the T-shaped lantern ring (511), and a limiting hole (516) is formed in the side surface of the T-shaped lantern ring (511);

The adjusting component (5) further comprises an extrusion unit (52), the extrusion unit (52) comprises a guide post (521), the guide post (521) is fixedly connected with the side surface of the T-shaped lantern ring (511), a guide sleeve (522) is sleeved on the surface of the guide post (521), an extrusion ring (523) is fixedly connected with the side surface of the guide sleeve (522), the extrusion ring (523) is abutted against the side surface of the movable ring module (3), a threaded sleeve (524) is fixedly connected with the side surface of the extrusion ring (523), an adjusting bolt (525) is rotatably connected with the inner wall of the T-shaped lantern ring (511) located in the limiting hole (516), and the adjusting bolt (525) is in threaded connection with the inner wall of the threaded sleeve (524).

2. A pressure-adjustable mechanical seal according to claim 1, wherein the number of threaded holes (512) is three, the three threaded holes (512) being arranged in a circumferential array about the T-collar (511).

3. The pressure-adjustable mechanical seal according to claim 1, wherein the locking washer (513) is sleeved with threaded portions of fastening bolts (514), the number of the fastening bolts (514) is three, the three fastening bolts (514) are arranged in a circumferential array with respect to the rotating shaft (1), and the fastening bolts (514) are abutted against the surface of the locking washer (513).

4. The pressure-adjustable mechanical seal of claim 1, wherein the groove (515) is located directly below the limiting hole (516), and an inner wall of the groove (515) is arranged in an arc shape.

5. A pressure-adjustable mechanical seal according to claim 1, wherein the number of the guide posts (521) is two, the two guide posts (521) are arranged symmetrically about the rotation axis (1), and the guide sleeve (522) is matched with the number of the guide posts (521).

6. A pressure-adjustable mechanical seal according to claim 1, wherein the squeeze ring (523) is in socket engagement with the surface of the shaft (1) and the threaded sleeve (524) is equal in height to the guide sleeve (522).