CN213685281U

CN213685281U - Leak protection mechanical seal spare

Info

Publication number: CN213685281U
Application number: CN202022457600.4U
Authority: CN
Inventors: 熊川
Original assignee: Chengdu Lianfa Hengda Machinery Co ltd
Current assignee: Chengdu Lianfa Hengda Machinery Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-07-13
Anticipated expiration: 2030-10-30

Abstract

The utility model relates to a leak protection mechanical seal spare, including the axle sleeve, the movable ring cover, the pressure spring, the cassette, the rotating ring, quiet ring and mechanical gland, the axle sleeve outside is provided with the separation blade, the movable ring cover is established on the axle sleeve and with the separation blade butt, the pressure spring is installed in the rotating ring cover, the pressure spring cover is established the axle sleeve outside, the cassette joint is in the rotating ring cover and with pressure spring one end butt, the rotating ring is installed the movable ring cover is kept away from one of separation blade is served, mechanical gland is hollow, mechanical gland one end is provided with the ring piece, quiet ring joint is in the ring piece with between the rotating ring. The utility model discloses can effectively improve mechanical seal's leak protection performance, avoid impurity to get into to the equipment is simple, the after-sales maintenance of being convenient for.

Description

Leak protection mechanical seal spare

Technical Field

The utility model relates to a sealing member technical field especially relates to a leak protection mechanical seal spare.

Background

The mechanical seal is a shaft seal device of rotary machinery, also called end face seal, and is a device for preventing fluid leakage, which is formed by that at least a pair of end faces vertical to a rotary axis are kept jointed with a rotary shaft under the action of fluid pressure and the elastic force of a compensation mechanism and under the matching of auxiliary seal, and the end faces slide relatively.

The common mechanical sealing structure is composed of a static ring (static ring), a rotating ring (moving ring), an elastic element spring seat, a set screw, an auxiliary sealing ring of the rotating ring, an auxiliary sealing ring of the static ring and other elements, and an anti-rotation pin is fixed on a gland to prevent the static ring from rotating. When the existing mechanical sealing element is used, fluid leakage is easily caused, and the practicability is poor.

SUMMERY OF THE UTILITY MODEL

Therefore, the leakage-proof mechanical sealing element is needed to be provided aiming at the condition that the existing mechanical sealing element is poor in leakage prevention, the leakage-proof performance of the mechanical sealing element can be effectively improved, impurities are prevented from entering, the assembly is simple, and the maintenance after sale is convenient.

The utility model provides a leak protection mechanical seal spare, includes the axle sleeve, the movable ring cover, the pressure spring, the cassette, the rotating ring, quiet ring and mechanical seal gland, the axle sleeve outside is provided with the separation blade, the movable ring ways establish on the axle sleeve and with the separation blade butt, the pressure spring is installed in the rotating ring cover, the pressure spring cover is established the axle sleeve outside, the cassette joint is in the rotating ring cover and with pressure spring one end butt, the rotating ring is installed the movable ring cover is kept away from one of separation blade is served, mechanical seal gland is hollow, mechanical seal gland one end is provided with the ring piece, quiet ring joint is in the ring piece with between the rotating ring.

Preferably, the movable ring sleeve is provided with a protrusion on the inner side wall of one end, away from the blocking piece, the clamping seat comprises a fixing piece and a sleeve, the sleeve penetrates through the fixing piece, and the edge of the fixing piece corresponds to the protrusion and is provided with a notch.

Preferably, a movable ring sealing ring is arranged between the movable ring and the fixed plate.

Preferably, a boss is arranged at one end of the static ring adjacent to the ring piece, and a static ring sealing ring is mounted on the boss.

Preferably, one end of the shaft sleeve, which is adjacent to the movable ring sleeve, is provided with a locking hole.

The utility model discloses an useful part lies in: 1. the movable ring sleeve is matched with the clamping seat to install the pressure spring, so that the pressure spring is prevented from being misplaced, the sealing effect is reduced, and fluid is leaked out; 2. the movable ring sleeve, the pressure spring and the movable ring are integrally arranged on the shaft sleeve, so that the assembly is very convenient, and the fluid can be prevented from overflowing from the shaft sleeve.

Drawings

FIG. 1 is a schematic view of a leak-proof mechanical seal according to one embodiment;

FIG. 2 is a cross-sectional view of a leak-proof mechanical seal;

fig. 3 is a schematic perspective view of the card holder.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1-2, a leakage-proof mechanical sealing element includes a shaft sleeve 1, a movable ring sleeve 2, a pressure spring 3, a clamping seat 4, a movable ring 5, a stationary ring 6 and a mechanical sealing cover 7, wherein a blocking piece 11 is arranged on the outer side of the shaft sleeve 1, the movable ring sleeve 2 is sleeved on the shaft sleeve 1 and is abutted to the blocking piece 11, the pressure spring 3 is installed in the movable ring sleeve 2, the pressure spring 3 is sleeved on the outer side of the shaft sleeve 1, the clamping seat 4 is clamped in the movable ring sleeve 2 and is abutted to one end of the pressure spring 3, the movable ring 5 is installed at one end of the movable ring sleeve 2 far away from the blocking piece 11, the mechanical sealing cover 7 is hollow, a ring piece 71 is arranged at one end of the mechanical sealing cover 7, and the stationary ring 6 is clamped between the ring piece 71 and the movable ring 5. Specifically, in this embodiment, the mechanical seal cover 7 is used to cover the machine body, and the mechanical seal cover 7 is hollow, so that the shaft sleeve 1 is conveniently mounted and the shaft sleeve 1 is protected. And, set up separation blade 11 in the axle sleeve 1 outside, utilize separation blade 11 butt to live movable ring cover 2, prevent that movable ring cover 2 from shifting on axle sleeve 1, and, it has pressure spring 3 to fill between movable ring cover 2 and axle sleeve 1, when sealing gland 1 is connected with the organism, pressure spring 3 is compressed, utilize movable ring cover 2 cooperation cassette 4 to restrict the installation space of pressure spring 3, take place the dislocation when preventing the compression of pressure spring 3, lead to pressure spring 3 by sharp wearing and tearing, life reduces. Furthermore, a movable ring 5 is arranged at the port of the movable ring sleeve 2, and after a bearing (not shown in the figure) is inserted into the shaft sleeve 1, the movable ring sleeve 2 and the movable ring 5 can rotate along with the bearing, so that a better sealing effect can be achieved, and fluid is prevented from overflowing along with the shaft sleeve 1.

As shown in fig. 1 to 3, a protrusion 21 is disposed on an inner side wall of one end of the movable ring sleeve 2 away from the blocking plate 11, the clamping seat 4 includes a fixing plate 41 and a sleeve 42, the sleeve 42 penetrates through the fixing plate 41, and an edge of the fixing plate 41 is provided with a notch 411 corresponding to the protrusion 21. Specifically, for the convenience of installing the clamping pressure spring 3, prevent that the pressure spring 3 from popping out, set up protruding 21 at the 2 inner walls of movable ring cover, and set up breach 411 at the limit portion of stationary blade 41, after the pressure spring 3 embolias movable ring cover 2 in, operating personnel holds sleeve pipe 42, aim at protruding 21 with breach 411, can insert movable ring cover 2 with cassette 4 in, half a circle of rotation again, make protruding 21 misplace with breach 411, can clamp cassette 4 in movable ring cover 2, prevent that the pressure spring 3 from shifting.

As shown in fig. 1 to 2, a dynamic ring seal 51 is provided between the dynamic ring 5 and the stationary plate 41. Specifically, the movable ring seal ring 51 is arranged between the movable ring 5 and the fixed plate 41 and clamped, so that the movable ring seal ring 51 can be prevented from deforming to cause the overflow of fluid.

As shown in fig. 1-2, a boss 61 is arranged at one end of the stationary ring 6 adjacent to the ring piece 71, and a stationary ring seal ring 62 is mounted on the boss 61. Specifically, the stationary ring 6 is made of graphite, and the stationary ring 6 is matched with the ring piece 71 to clamp the stationary ring sealing ring 62, so that the stationary ring sealing ring 62 is always in a stationary state, and the relatively tight sealing effect is better.

As shown in fig. 1-2, a locking hole 12 is formed at one end of the shaft sleeve 1 adjacent to the movable ring sleeve 2. Specifically, the outlet of the shaft sleeve 1 is provided with a locking hole 12, so that the cross section area of the shaft sleeve is reduced, and the overflow of fluid along the bearing is prevented.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A leak-proof mechanical seal, characterized by: the mechanical seal device comprises a shaft sleeve, a movable ring sleeve, a pressure spring, a clamping seat, a movable ring, a static ring and a mechanical seal cover, wherein a separation blade is arranged on the outer side of the shaft sleeve, the movable ring sleeve is sleeved on the shaft sleeve and abutted against the separation blade, the pressure spring is installed in the movable ring sleeve, the pressure spring is sleeved on the outer side of the shaft sleeve, the clamping seat is clamped in the movable ring sleeve and abutted against one end of the pressure spring, the movable ring is installed on one end, away from the separation blade, of the movable ring sleeve, the mechanical seal cover is hollow, a ring piece is arranged at one end of the mechanical seal cover, and the static ring is clamped between the ring piece and the movable ring.

2. A leak-proof mechanical seal as defined in claim 1, wherein: the movable ring sleeve is far away from a bulge is arranged on the inner side wall of one end of the separation blade, the clamping seat comprises a fixing piece and a sleeve, the sleeve penetrates through the fixing piece, and a notch is formed in the edge of the fixing piece corresponding to the bulge.

3. A leak-proof mechanical seal as defined in claim 2, wherein: and a moving ring sealing ring is arranged between the moving ring and the fixed plate.

4. A leak-proof mechanical seal as defined in claim 3, wherein: the static ring and the adjacent end of the ring piece are provided with a boss, and a static ring sealing ring is installed on the boss.

5. The leak-proof mechanical seal of claim 4, wherein: and one end of the shaft sleeve, which is adjacent to the movable ring sleeve, is provided with a locking hole.