Mechanical seal assembly with buffer structure

Abstract

The utility model provides a mechanical seal assembly with a buffer structure, which comprises a mechanical seal structural body, the mechanical seal structural body comprises a seal plug ring, the rear end of the seal plug ring is provided with an abutting inner ring, the rear end of the abutting inner ring is connected with a spring assembly, and the rear end of the spring assembly is provided with an abutting outer ring. A buffer inner layer ring is arranged in the middle of the sealing plug ring, detachable gaskets are symmetrically and movably connected to the front end and the rear end of the buffer inner layer ring, and notches are symmetrically formed in the upper side and the lower side of the front end and the rear end of the buffer inner layer ring. The outer wall fitting precision is guaranteed through butt joint of the clamping grooves and the protruding blocks of the buffering inner layer ring, then the outer protruding rings of the protruding columns are annularly embedded into the butt joint ring grooves through pressing to achieve connection, meanwhile, the connection tightness is enhanced by means of magnetic connection of the metal inner disc and the magnetic inner ring piece, looseness caused by vibration is prevented, and stable sealing performance is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mechanical seal assembly with buffer structure belongs to sealed assembly technical field. BACKGROUND

[0002] Mechanical seal assembly is a device for preventing fluid (liquid or gas) between the rotating shaft and stationary parts of mechanical equipment leakage. It is a kind of precision sealing device, mainly through the close adhesion between dynamic ring and static ring to realize sealing function, and in various complex working conditions (such as high temperature, high pressure, high speed rotation, corrosive medium, etc.) can effectively prevent fluid leakage.

[0003] A kind of mechanical seal assembly of Chinese patent number CN212177867U, including bearing mechanism, static sealing mechanism and dynamic sealing mechanism, the bearing mechanism includes installation shell and the connecting shaft through inside, the inside both ends of the installation shell are sealingly connected with the static sealing mechanism, and sealing sleeve is arranged on the outer wall of the connecting shaft;Two adjusting rings are pushed out by adjusting mechanism, and the pressure applied by dynamic sealing ring to static sealing mechanism is reduced, the pressure of static sealing mechanism is reduced, prevent its long time in pressure state, improve its service life, can be adjusted according to the use state of equipment;

[0004] Since the sealing plug is a relatively complete and multiple-part assembly, when the sealing plug is partially worn, the entire sealing plug needs to be replaced if the surface ring cannot be individually disassembled and replaced, increasing the maintenance material cost and unnecessary expenses.

[0005] Therefore, a mechanical seal assembly with a buffer structure is provided. UTILITY MODEL CONTENTS

[0006] Therefore, the utility model provides a mechanical seal assembly with a buffer structure to solve or alleviate the technical problems in the prior art, at least to provide a beneficial choice.

[0007] The technical scheme of the utility model is as follows: a mechanical seal assembly with a buffer structure, comprising a mechanical seal structure, the mechanical seal structure comprising a sealing plug ring, the rear end of the sealing plug ring being provided with an abutting inner ring, the rear end of the abutting inner ring being connected with a spring assembly, the rear end of the spring assembly being provided with an abutting outer ring, the middle part of the sealing plug ring being provided with a buffer inner layer ring, the front and rear ends of the buffer inner layer ring being symmetrically connected with detachable gaskets, the front and rear ends of the buffer inner layer ring being symmetrically provided with notches on the upper and lower sides, the inner side wall of the notch being provided with a butt joint groove, one end of the detachable gasket close to the buffer inner layer ring being fixedly connected with a pair of protruding columns, one end of the protruding column close to the butt joint groove being fixedly connected with an outer protruding ring, and the corresponding outer protruding ring and butt joint groove are mutually engaged.

[0008] Further preferably, the inner side wall of the notch is fixedly connected with a magnetic inner ring piece, and one end of the protruding column close to the magnetic inner ring piece is fixedly connected with a metal inner disc.

[0009] Further preferably, the left and right ends of the buffer inner layer ring are symmetrically provided with protruding blocks.

[0010] Further preferably, one end of the detachable gasket close to the buffer inner layer ring is fixedly connected with a clamping groove, and the corresponding clamping groove and protruding block are clamped with each other.

[0011] Further preferably, the left and right ends of the buffer inner layer ring are symmetrically provided with protruding blocks.

[0012] Further preferably, the left and right ends of the buffer inner layer ring are symmetrically provided with protruding blocks.

[0013] Further preferably, the left and right ends of the buffer inner layer ring are symmetrically provided with protruding blocks.

[0014] The embodiment of the utility model has the following advantages due to the adoption of the above technical scheme.

[0015] Firstly, the detachable gasket is arranged on the left and right ends of the buffer inner layer ring of the sealing plug ring as a replacement part, when the detachable gasket is installed, the outer wall fitting precision is ensured by the butt joint of the clamping groove and the protruding block of the buffer inner layer ring, and then the outer protruding ring of the protruding column is embedded into the butt joint ring groove to realize the connection by pressing, and meanwhile, the connection tightness is enhanced by the magnetic connection of the metal inner disc and the magnetic inner ring piece, so that the loosening caused by vibration is prevented, and the sealing performance stability is ensured.

[0016] Secondly, when the sealing plug ring needs to be replaced due to wear, the cover plate ring of the detachable gasket is turned over to expose the sharp corner inner groove, and the buffer inner layer ring can be easily removed and replaced by taking the sharp corner inner groove as a fulcrum, so that the convenient replacement mode can effectively reduce the maintenance cost and time cost, improve the use effect of the mechanical sealing structure, prolong the service life, reduce the downtime of the equipment caused by the replacement of the sealing part, improve the reliability and economy of the equipment operation, ensure the continuity and efficiency of the production.

[0017] The above summary is only for the purpose of the description and is not intended to limit in any way. In addition to the above described illustrative aspects, embodiments, and features, further aspects, embodiments, and features of the utility model will be readily apparent from the drawings and the following detailed description, which must be considered in connection with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 Structure schematic view of mechanical seal structure body of the present application;

[0020] Figure 2 Explosion structure schematic view of mechanical seal structure body of the present application;

[0021] Figure 3 Structure schematic view of seal plug ring of the present application;

[0022] Figure 4 Explosion structure schematic view of seal plug ring of the present application.

[0023] Reference signs: 1, mechanical seal structure body; 2, seal plug ring; 3, abutting inner ring; 4, spring assembly; 5, abutting outer ring; 6, detachable gasket; 7, clamping groove; 8, protruding block; 9, sharp corner inner groove; 10, cover plate ring; 11, protruding column; 12, butt joint ring groove; 13, outer protruding ring; 14, metal inner disc; 15, magnetic inner ring piece; 16, wear-resistant coating; 17, buffer inner layer ring; 18, notch. DETAILED DESCRIPTION

[0024] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0025] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0026] Embodiment 1

[0027] As Figures 1-4As shown, the utility model embodiment provides a kind of mechanical seal assembly with buffer structure, including mechanical seal structure body 1, mechanical seal structure body 1 includes sealing plug ring 2, the rear end of sealing plug ring 2 is provided with abutting inner ring 3, the rear end of abutting inner ring 3 is connected with spring assembly 4, the rear end of spring assembly 4 is installed with abutting outer ring 5, the middle part of sealing plug ring 2 is provided with buffer inner layer ring 17, and the front and rear ends of buffer inner layer ring 17 are symmetrically movably connected with detachable gasket 6, and the front and rear ends of buffer inner layer ring 17 are symmetrically provided with recess 18 on the upper and lower sides, the inner side wall of recess 18 is provided with butt joint ring groove 12, one end of detachable gasket 6 close to buffer inner layer ring 17 is fixedly connected with a pair of protruding column 11, one end of protruding column 11 close to butt joint ring groove 12 is fixedly connected with outer convex ring 13, corresponding outer convex ring 13 and butt joint ring groove 12 are mutually engaged, the inner side wall of recess 18 is fixedly connected with magnetic inner ring piece 15, one end of protruding column 11 close to magnetic inner ring piece 15 is fixedly connected with metal inner disc 14, corresponding two metal inner discs 14 and magnetic inner ring piece 15 are magnetically connected, the left and right ends of buffer inner layer ring 17 are symmetrically provided with protruding block 8, one end of detachable gasket 6 close to buffer inner layer ring 17 is fixedly connected with clamping groove 7, and corresponding clamping groove 7 and protruding block 8 are mutually engaged, sealing plug ring 2 and abutting inner ring 3 and spring assembly 4 and abutting outer ring 5 are in mutual abutting engagement state, and the outer wall surface of detachable gasket 6 is fixedly connected with wear-resistant coating 16.

[0028] By setting detachable gasket 6 as replacement piece on the left and right ends of the buffer inner layer ring 17 of sealing plug ring 2, when installing, first, butt joint is guaranteed by the butt joint of clamping groove 7 and protruding block 8 of buffer inner layer ring 17 to ensure the precision of outer wall fitting, then, by pressing, the outer convex ring 13 of protruding column 11 is embedded in butt joint ring groove 12 to realize connection, and at the same time, the magnetic connection of metal inner disc 14 and magnetic inner ring piece 15 is used to enhance the connection tightness, prevent loosening caused by vibration, and ensure stable sealing performance.

[0029] Embodiment 2

[0030] As Figure 4 shown, in one embodiment, the outer side of the front and rear ends of buffer inner layer ring 17 is symmetrically provided with sharp corner inner groove 9, one end of detachable gasket 6 close to buffer inner layer ring 17 is fixedly connected with cover ring 10, cover ring 10 covers outside sharp corner inner groove 9, and the two detachable gaskets 6 outside buffer inner layer ring 17 are detachably connected.

[0031] By setting the sharp corner inner groove 9, when the sealing plug ring 2 surface needs to be replaced due to wear, the operator can open the cover plate ring 10 fixedly connected on the detachable gasket 6 and located on the outside of the sharp corner inner groove 9 symmetrically opened on the front and rear ends of the buffer inner layer ring 17, exposing the sharp corner inner groove 9. At this time, the operator can easily detach the buffer inner layer ring 17 from the outside of the sealing plug ring 2 by inserting the fingertips into the sharp corner inner groove 9 as a fulcrum, and then performing replacement work. Through this convenient and efficient replacement method, the maintenance cost and time cost can be effectively reduced, the overall mechanical sealing structure 1 can be greatly improved in use effect, the service life can be prolonged, the equipment downtime caused by replacement of the sealing element can be reduced, and the reliability and economy of equipment operation can be improved.

[0032] The utility model discloses a sealing plug ring 2 and the abutment inner ring 3 and spring assembly 4 still abutment outer ring 5 between mutual abutment in this scheme The combination of a sealing mechanism is formed, which is installed on the output shaft of the mechanical component, thereby playing a very critical sealing role. In the actual operation process, the sealing plug ring 2 is directly in frequent contact with the sealing medium and is in a dynamic friction environment, and becomes an easy-to-wear part during use. To effectively solve the problem of easy wear and tear of the sealing plug ring 2 and inconvenient replacement, two detachable gaskets 6 as replacement parts can be arranged at the left and right ends of the buffer inner ring 17 in the sealing plug ring 2. The detachable gasket 6 is first connected to the protruding block 8 symmetrically opened at the left and right ends of the buffer inner ring 17 through the clamping groove 7. Through this ingenious structure design, the detachable gasket 6 and the outer wall of the buffer inner ring 17 can be accurately fitted, ensuring the initial precision and stability of the connection between the two. Then, the operator presses the two protruding columns 11 on the detachable gasket 6, and the outer convex ring 13 fixedly connected to the end of the protruding column 11 is deeply inserted into the butt circle groove 12 opened in the corresponding position of the buffer inner ring 17, so as to realize the smooth connection between the detachable gasket 6 and the buffer inner ring 17. On this basis, the metal inner disc 14 fixedly connected to the inner wall of the notch 18 and the magnetic inner ring piece 15 fixedly connected to the inner wall of the notch 18 are magnetically connected, further improving the connection tightness of the detachable gasket 6, the protruding column 11 and the buffer inner ring 17, effectively preventing the connection from loosening due to vibration and other factors during equipment operation, thereby ensuring the stability of the sealing performance of the entire sealing mechanism combination. When the sealing plug ring 2 surface needs to be replaced due to wear, the operator can open the cover ring 10 fixedly connected to the sharp corner inner groove 9 symmetrically opened on the left and right sides of the buffer inner ring 17 and located outside the sharp corner inner groove 9, exposing the sharp corner inner groove 9. At this time, the operator can easily detach the buffer inner ring 17 from the outside of the sealing plug ring 2 by inserting the fingertip into the sharp corner inner groove 9 as a fulcrum, and then performing replacement work. Through this convenient and efficient replacement method, the maintenance cost and time cost can be effectively reduced, the use effect of the overall mechanical sealing structure 1 can be greatly improved, the service life can be prolonged, the equipment downtime caused by replacement of the sealing part can be reduced, and the reliability and economy of equipment operation can be improved.

[0033] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this. Any skilled person in the art can easily think of various changes or replacements within the technical scope disclosed by the utility model, which should be covered within the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A mechanical seal assembly with a buffer structure, comprising a mechanical seal structure (1), characterized in that: The mechanical seal structure (1) includes a sealing plug ring (2), the rear end of the sealing plug ring (2) is provided with an abutting inner ring (3), the rear end of the abutting inner ring (3) is connected with a spring assembly (4), the rear end of the spring assembly (4) is installed with an abutting outer ring (5), the middle part of the sealing plug ring (2) is provided with a buffer inner layer ring (17), the front and rear ends of the buffer inner layer ring (17) are symmetrically and movably connected with detachable gaskets (6), the upper and lower sides of the front and rear ends of the buffer inner layer ring (17) are symmetrically provided with notches (18), the inner side wall of the notch (18) is provided with a butt joint ring groove (12), one end of the detachable gasket (6) close to the buffer inner layer ring (17) is fixedly connected with a pair of protruding columns (11), one end of the protruding column (11) close to the butt joint ring groove (12) is fixedly connected with an outer convex ring (13), and the corresponding outer convex ring (13) and butt joint ring groove (12) are mutually clamped.

2. A mechanical seal assembly having a buffer structure according to claim 1, characterized in that: The inner side wall of the notch (18) is fixedly connected with a magnetic inner ring piece (15), and one end of the protruding column (11) close to the magnetic inner ring piece (15) is fixedly connected with a metal inner disc (14).

3. A mechanical seal assembly having a buffer structure according to claim 2, wherein: The corresponding two metal inner discs (14) and magnetic inner ring pieces (15) are magnetically connected, and the left and right ends of the buffer inner layer ring (17) are symmetrically provided with protruding blocks (8).

4. A mechanical seal assembly having a buffer structure according to claim 3, wherein: One end of the detachable gasket (6) close to the buffer inner layer ring (17) is fixedly connected with a clamping groove (7), and the corresponding clamping groove (7) and protruding block (8) are mutually clamped.

5. The mechanical seal assembly with a buffer structure according to claim 1, wherein: The outer sides of the front and rear ends of the buffer inner layer ring (17) are symmetrically provided with sharp corner inner grooves (9), and one end of the detachable gasket (6) close to the buffer inner layer ring (17) is fixedly connected with a cover ring (10).

6. A mechanical seal assembly having a buffer structure according to claim 5, wherein: The cover ring (10) covers the outside of the sharp corner inner groove (9), and the two detachable gaskets (6) outside the buffer inner layer ring (17) are detachably connected.

7. The mechanical seal assembly with a buffer structure according to claim 1, wherein: The sealing plug ring (2), the abutting inner ring (3), the spring assembly (4) and the abutting outer ring (5) are in a mutually abutting and clamping state, and the outer wall surface of the detachable gasket (6) is fixedly connected with a wear-resistant coating (16).

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