CN214305282U

CN214305282U - Pressing sheet type sealing device

Info

Publication number: CN214305282U
Application number: CN202023214446.4U
Authority: CN
Inventors: 黄金
Original assignee: Sichuan Kelang Seal Co ltd
Current assignee: Sichuan Kelang Seal Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-09-28
Anticipated expiration: 2030-12-28

Abstract

The utility model discloses a tabletting type sealing device, which is characterized by comprising a static ring component, a movable ring component abutted against the static ring component and a pressing component abutted against the movable ring component; the pressing assembly comprises a spring outer sleeve (7), a push ring (6) which is arranged in the spring outer sleeve (7) and is abutted to the movable ring assembly, and an annular elastic sheet (9) which is arranged in the spring outer sleeve (7) and is positioned between the push ring (6) and the bottom of the spring outer sleeve (7). The utility model discloses be provided with annular shell fragment, this annular shell fragment is coniform, and is provided with outer fringe slotted hole and inner edge slotted hole on it, therefore annular shell fragment has fine elasticity, can satisfy the demand that promotes the rotating ring, can not influence elasticity because of taking place the contact with granule medium or thick viscous medium moreover.

Description

Pressing sheet type sealing device

Technical Field

The utility model relates to a mechanical seal field specifically indicates a preforming formula sealing device.

Background

The mechanical seal is a device for solving the problem of sealing between a rotating shaft and a machine body, and is formed by at least one pair of end faces perpendicular to the rotating shaft, which are kept to be attached and relatively slide under the action of fluid pressure and the elastic force of a compensation mechanism and under the cooperation of auxiliary sealing, so that the device for preventing fluid leakage is formed. The existing mechanical seal is provided with a spring between the movable ring and the transmission sleeve, the movable ring always keeps stable abutting pressure with the stationary ring when rotating along with the rotating shaft through the spring, the movable ring is pushed to move forwards under the condition that the sealing surface is abraded, the sealing effect caused by abrasion compensation is reduced, and the effect of the mechanical seal is ensured. However, the pushing spring generally uses a common spring wound by a steel wire spiral, the elastic coefficient of the common spring is small, the thrust range is narrow, and a longer spring is needed to achieve the set thrust, so that the pushing spring is difficult to avoid contact with a granular medium or a viscous medium, the pushing spring is stuck by the medium, or the damping is increased, so that the compensation failure or unstable sealing of the pushing spring is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve above-mentioned problem, provide an adopt novel shell fragment to replace traditional ordinary spring to prevent the preforming formula sealing device that spring compensation became invalid.

The purpose of the utility model is realized through the following technical scheme: a tablet pressing type sealing device comprises a static ring assembly, a moving ring assembly and a pressing assembly, wherein the moving ring assembly is abutted against the static ring assembly; the pressing assembly comprises a spring outer sleeve, a push ring which is arranged in the spring outer sleeve and is abutted against the movable ring assembly, and an annular elastic sheet which is arranged in the spring outer sleeve and is positioned between the push ring and the bottom of the spring outer sleeve; the annular elastic sheet is conical, one end with a small diameter is abutted to the push ring, and one end with a large diameter is abutted to the bottom of the spring jacket.

An inner edge slotted hole is circumferentially arranged at one end, close to the central axis, of the annular elastic sheet, and an outer edge slotted hole is circumferentially arranged at one end, far away from the central axis, of the annular elastic sheet; the inner edge slotted hole and the outer edge slotted hole are distributed along the length direction of the annular elastic sheet.

The inner edge slotted holes and the outer edge slotted holes are alternately distributed.

The bottom of the spring outer sleeve is provided with a buffer groove, and the large-diameter end of the annular elastic sheet is clamped into the buffer groove.

The movable ring assembly comprises a movable ring with one end positioned in the spring jacket and provided with an installation cavity, and a movable ring seal arranged in the installation cavity; the movable ring is abutted against the static ring component.

The spring sleeve is characterized in that a concave cavity is formed in the inner wall of the spring sleeve, a moving ring retaining ring is installed in the concave cavity, a moving ring retaining shoulder is arranged on the moving ring, and the moving ring retaining shoulder can abut against the moving ring retaining ring when the moving ring moves forwards.

The static ring component comprises a static ring sleeve and a static ring arranged in the static ring sleeve; the static ring is abutted with the dynamic ring.

And a static ring seal is arranged between the static ring sleeve and the static ring.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

(1) the utility model discloses be provided with annular shell fragment, this annular shell fragment is coniform, and is provided with outer fringe slotted hole and inner edge slotted hole on it, therefore annular shell fragment has fine elasticity, can satisfy the demand that promotes the rotating ring, can not influence elasticity because of taking place the contact with granule medium or thick viscous medium moreover.

(2) The utility model discloses a rotating ring is provided with the rotating ring and keeps off the shoulder, and the inner wall of spring coat is provided with the rotating ring retaining ring, keeps off the cooperation of shoulder and rotating ring retaining ring through the rotating ring and prevents that the rotating ring axial displacement is too big, and influences sealing performance.

Drawings

Fig. 1 is a sectional view of the utility model in use.

Fig. 2 is a top view of the ring-shaped elastic piece of the present invention.

Fig. 3 is a side view of the ring-shaped elastic piece of the present invention.

Fig. 4 is a sectional view of the spring housing of the present invention.

Fig. 5 is a sectional view of the movable ring of the present invention.

The reference numbers in the above figures refer to: 1-stationary ring sleeve, 2-stationary ring seal, 3-stationary ring, 4-moving ring retainer ring, 5-moving ring, 6-push ring, 7-spring jacket, 8-rotating shaft, 9-annular elastic sheet, 10-moving ring seal, 11-outer edge slotted hole, 12-inner edge slotted hole, 13-buffer slot, 14-moving ring retaining shoulder, 15-ampere

And (6) loading into a cavity.

Detailed Description

The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.

Examples

As shown in fig. 1, the tablet-type sealing device of the present invention comprises a stationary ring assembly, a movable ring assembly and a pressing assembly respectively mounted on a rotating shaft 8. The movable ring assembly is connected with the static ring assembly in an abutting mode, and the pressing assembly is connected with the movable ring assembly in an abutting mode.

Specifically, the pressing assembly comprises a spring outer sleeve 7, a push ring 6 which is arranged in the spring outer sleeve 7 and is abutted to the movable ring assembly, and an annular elastic sheet 9 which is arranged in the spring outer sleeve 7 and is positioned between the push ring 6 and the bottom of the spring outer sleeve 7. When installed, the spring housing 7 is installed on the device.

The annular elastic sheet 9 is used for tightly abutting against the moving ring assembly, as shown in fig. 2 and 3, the annular elastic sheet 9 is conical, one end with a small diameter abuts against the push ring 6, and one end with a large diameter abuts against the bottom of the spring housing 7. The bottom of the spring outer sleeve 7 is provided with a buffer groove 13; after the whole sealing device is installed, the outer part of the annular elastic sheet 9 is in a pressed state, and the large-diameter end of the annular elastic sheet 9 is clamped into the buffer groove 13.

An inner edge slotted hole 12 is circumferentially arranged at one end of the annular elastic sheet 9 close to the central axis thereof, and an outer edge slotted hole 11 is circumferentially arranged at one end far away from the central axis; the inner edge slot hole 12 and the outer edge slot hole 11 are distributed along the length direction of the annular elastic sheet 9. In addition, the inner edge slot holes 12 and the outer edge slot holes 11 are alternately distributed. The annular elastic sheet 9 can provide uniform elastic force for the movable ring assembly.

As shown in fig. 1 and 5, the rotating ring assembly comprises a rotating ring 5 with one end located in a spring housing 7 and a mounting cavity 15, and a rotating ring seal 10 installed in the mounting cavity 15; the movable ring 5 is abutted with the static ring component.

Because the movable ring may move axially when the device is used, as shown in fig. 4, a concave cavity is formed in the inner wall of the spring housing 7, a movable ring retaining ring 4 is installed in the concave cavity, a movable ring retaining shoulder 14 is arranged on the movable ring 5, the movable ring retaining shoulder 14 can abut against the movable ring retaining ring 4 when the movable ring 5 moves forwards, and the movable ring 5 can be prevented from being separated from the spring housing 7 through the movable ring retaining ring 4.

As shown in fig. 1, the stationary ring assembly includes a stationary ring housing 1, a stationary ring 3 installed in the stationary ring housing 1; the stationary ring 3 abuts against the moving ring 5. And a static ring seal 2 is arranged between the static ring sleeve 1 and the static ring 3 so as to improve the sealing performance of the device. When the device is installed, the static ring sleeve 1 is installed on the device.

When the movable ring is used, after a sealing surface between the static ring 3 and the movable ring 5 is abraded or the movable ring 5 axially moves, the annular elastic sheet 9 can push the movable ring 5, so that the movable ring 5 can be attached to the static ring 3.

The above embodiments have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the details of the above embodiments, and the technical idea of the present invention can be modified to various simple modifications, which all belong to the protection scope of the right of the present invention, as long as it does not violate the idea of the present invention.

As described above, the utility model discloses alright fine realization.

Claims

1. A tabletting type sealing device is characterized by comprising a static ring component, a moving ring component and a pressing component, wherein the moving ring component is abutted with the static ring component; the pressing assembly comprises a spring outer sleeve (7), a push ring (6) which is arranged in the spring outer sleeve (7) and is abutted against the movable ring assembly, and an annular elastic sheet (9) which is arranged in the spring outer sleeve (7) and is positioned between the push ring (6) and the bottom of the spring outer sleeve (7); the annular elastic sheet (9) is conical, one end with a small diameter is abutted with the push ring (6), and one end with a large diameter is abutted with the bottom of the spring outer sleeve (7).

2. A wafer-type sealing device according to claim 1, wherein one end of the ring-shaped elastic sheet (9) close to the central axis thereof is circumferentially provided with an inner edge slot (12), and the other end thereof away from the central axis is circumferentially provided with an outer edge slot (11); the inner edge slotted hole (12) and the outer edge slotted hole (11) are distributed along the length direction of the annular elastic sheet (9).

3. A tablet press seal according to claim 2 wherein the inner edge slots (12) and outer edge slots (11) are alternately arranged.

4. A tablet press seal according to claim 3 characterised in that the bottom of the spring housing (7) is provided with a buffer groove (13) and the large diameter end of the annular spring plate (9) snaps into the buffer groove (13).

5. A sheeting seal as claimed in claim 4 wherein said rotating ring assembly comprises a rotating ring (5) having a mounting cavity (15) at one end thereof located within said spring housing (7), a rotating ring seal (10) mounted within said mounting cavity (15); the movable ring (5) is abutted against the static ring component.

6. A tabletting sealing device according to claim 5, wherein a cavity is formed in the inner wall of the spring housing (7), a rotating ring retainer (4) is mounted in the cavity, a rotating ring stop shoulder (14) is arranged on the rotating ring (5), and the rotating ring stop shoulder (14) can abut against the rotating ring retainer (4) when the rotating ring (5) moves forward.

7. A sheetable seal according to claim 6, wherein the stationary ring assembly comprises a stationary ring sleeve (1), a stationary ring (3) mounted within the stationary ring sleeve (1); the static ring (3) is abutted with the dynamic ring (5).

8. A sheeted seal according to claim 7, wherein a stationary ring seal (2) is arranged between the stationary ring sleeve (1) and the stationary ring (3).