CN210265846U - Multi-spring type mechanical sealing device - Google Patents

Abstract

The utility model relates to a mechanical seal technical field discloses a multi-spring type mechanical seal device, including the main shaft, main shaft left side cover is equipped with the axle sleeve, and axle sleeve right side cover is equipped with the end cover, the first spacing axle of axle sleeve left side sliding connection, first spacing axle lean on the first extension spring of outside one end fixed connection, and first extension spring other end fixed connection axle sleeve is outside, first spacing axle is leaned on device center one end joint to locate the left first spacing groove of main shaft, the main shaft is outside to the end cover right-hand member cover is located, and the spacing axle of end cover right side sliding connection second, the spacing axle of second lean on outside one end fixed connection second extension spring. The utility model is suitable for an among the mechanical seal device, through setting up first spacing groove and the cooperation of first spacing axle, the cooperation of second spacing groove and the spacing axle of second to axle sleeve and end cover are at the epaxial rigidity of main shaft, have guaranteed that axle sleeve and end cover can not control and throw off, thereby make the leakproofness of whole device better.

Description

Multi-spring type mechanical sealing device

Technical Field

The utility model relates to a mechanical seal technical field specifically is a multi-spring type mechanical seal device.

Background

In the rapidly developing modern industry, the use environment of the mechanical sealing element is changing profoundly, and the requirements on the working condition are more strict. The operating conditions are developing in the direction of high speed, high pressure, low temperature, high vacuum, large size, micro size, etc. Taking petrochemical engineering as an example, the development direction of petrochemical pump is large-scale, speed-regulating, electromechanical integration and complete pump product. Dong Cheng sealing member tells you standardization, serialization and universalization, multiple varieties, wide performance, long service life and high reliability. The sealing for the mechanical pump is developed towards large-scale and specialized directions, and particularly, the sealing technology and the product development are fast, wherein the sealing technology is suitable for high-pressure and speed-regulating turbines, high-temperature, low-temperature and ultra-low-temperature pumps, speed-regulating pumps, corrosion-resistant pumps, pumps for conveying viscous media and pumps with solid particle media.

Chinese patent (No. CN 208935380U) discloses a multi-spring mechanical sealing device, which comprises a gland, a rotating shaft and a shaft sleeve, wherein the shaft sleeve is sleeved on the rotating shaft, the gland is sleeved at the right end of the shaft sleeve, the gland passes through a pin and a mounting seat at the rear end, a cushion pad is arranged between the mounting seat and the shaft sleeve, a fastening ring is sleeved at the right side of the cushion pad, a mounting groove is arranged at the inner side of the mounting seat, the utility model can effectively play a role of sealing by matching the corresponding movable ring sealing ring and the static ring sealing ring through the corresponding movable ring and the static ring end surface, and simultaneously, the design of the grooves at the inner sides of the movable ring and the static ring through the matching of the clamping grooves on the shaft sleeve enables the corresponding movable ring sealing ring and the static ring sealing ring to be more bonded, the device can realize the sealing effect to a certain degree, but can move left and right, thereby reducing the sealing effect of the entire device and thus requiring improvement of the device.

SUMMERY OF THE UTILITY MODEL

The utility model provides a many spring type mechanical seal device has solved the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a multi-spring type mechanical seal device, includes the main shaft, and main shaft left side cover is equipped with the axle sleeve, and axle sleeve right side cover is equipped with the end cover, the first spacing axle of axle sleeve left side sliding connection, first spacing axle lean on the first extension spring of outside one end fixed connection, and first extension spring other end fixed connection axle sleeve is outside, first spacing axle is by device center one end joint to locate the left first spacing groove of main shaft, the main shaft is outside to end cover right-hand member cover is located, the spacing axle of end cover right side sliding connection second, and the spacing axle of second leans on outside one end fixed connection second extension spring, and the other end fixed connection axle sleeve of second extension spring is outside, the spacing axle of second leans on device center one end joint to locate the second.

As a preferred technical scheme of the utility model, the axle sleeve left end is equipped with first sealing washer, and the axle sleeve right side is equipped with the second sealing washer.

As an optimized technical scheme of the utility model, the main shaft outside is located to first sealing washer and second sealing washer all cover.

As a preferred technical scheme of the utility model, the end cover left side is equipped with the third sealing washer, and the end cover right side is equipped with the fourth sealing washer.

As an optimized technical scheme of the utility model, the axle sleeve right side is located to the third sealing washer cover.

As an optimized technical scheme of the utility model, the main shaft right side is located to the fourth sealing washer cover.

As a preferred technical scheme of the utility model, axle sleeve right-hand member sliding connection slide bar, slide bar right-hand member fixed connection kicking block.

As an optimized technical solution of the utility model, the outside cover of slide bar is equipped with the spring.

The utility model discloses have following useful part:

the utility model is suitable for an among the mechanical seal device, through setting up first spacing groove and the cooperation of first spacing axle, the cooperation of second spacing groove and the spacing axle of second to axle sleeve and end cover are at the epaxial rigidity of main shaft, have guaranteed that axle sleeve and end cover can not control and throw off, thereby make the leakproofness of whole device better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a multi-spring mechanical sealing device.

Fig. 2 is a partially enlarged schematic view of a in fig. 1.

FIG. 3 is a schematic view of a spindle of a multi-spring mechanical seal device.

Fig. 4 is a schematic structural diagram of a shaft sleeve in a multi-spring mechanical sealing device.

Fig. 5 is a partially enlarged view of B in fig. 4.

FIG. 6 is a schematic diagram of an end cap of a multi-spring mechanical seal device.

In the figure: 1. a main shaft; 2. a shaft sleeve; 3. an end cap; 4. a first limit groove; 5. a second limit groove; 6. a first seal ring; 7. a first limit shaft; 8. a first tension spring; 9. a second seal ring; 10. a third seal ring; 11. a fourth seal ring; 12. a second limit shaft; 13. a second tension spring; 14. a slide bar; 15. a spring; 16. and (7) a top block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example one

Referring to fig. 1-6, a multi-spring mechanical sealing device includes a main shaft 1, a shaft sleeve 2 is sleeved on the left side of the main shaft 1, a first sealing ring 6 is disposed at the left end of the shaft sleeve 2, a second sealing ring 9 is disposed on the right side of the shaft sleeve 2, the first sealing ring 6 and the second sealing ring 9 are both sleeved outside the main shaft 1, the first sealing ring 6 and the second sealing ring 9 can ensure the sealing between the shaft sleeve 2 and the main shaft 1, an end cover 3 is sleeved on the right side of the shaft sleeve 2, a third sealing ring 10 is disposed on the left side of the end cover 3, a fourth sealing ring 11 is disposed on the right side of the end cover 3, the third sealing ring 10 is sleeved on the right side of the shaft sleeve 2, the fourth sealing ring 11 is sleeved on the right side of the main shaft 1, the fourth sealing ring 11 can ensure the.

The utility model discloses a main shaft, including main shaft 1, first spacing axle 7, first extension spring 8 other end fixed connection axle sleeve 2 outside, first spacing axle 7 leans on device center one end joint to locate the left first spacing groove 4 of main shaft 1, the 3 right-hand member covers of end cover are located main shaft 1 outside, and the 3 right sides sliding connection second of end cover is spacing 12, and the spacing axle 12 of second leans on outside one end fixed connection second extension spring 13, and the other end fixed connection axle sleeve 2 outside of second extension spring 13, the spacing axle 12 of second leans on device center one end joint to locate the second spacing groove 5 of main shaft 1 right-hand member.

Example two

The other contents of this embodiment are the same as those of the first embodiment, except that: the right end of the shaft sleeve 2 is slidably connected with a sliding rod 14, the right end of the sliding rod 14 is fixedly connected with a top block 16, and a spring 15 is sleeved outside the sliding rod 14. For the installation of whole device of convenience, all adopt clearance fit between first spacing axle 7 and the first spacing groove 4 and between spacing axle 12 of second and the second spacing groove 5, whole device can be comparatively light installation this moment, but after installing, owing to be clearance fit, can rock a lot between spacing axle and the spacing groove, rocking of device can influence the stable of sealing washer sealed, consequently, set up spring 15 and promote kicking block 16, promote axle sleeve 2 and end cover 3 to both sides, thereby make the position of spacing axle and spacing groove can be fixed, thereby make fixing that whole device can be stable outside main shaft 1.

In the implementation process of the utility model, the shaft sleeve 2 is firstly sleeved outside the main shaft 1, when the shaft sleeve is sleeved, the first limit shaft 7 is pulled outwards, the shaft sleeve 2 is firstly sleeved outside the main shaft 1, then the first limit shaft 7 is loosened, the shaft sleeve 2 is slid on the main shaft 1, when the first limit shaft 7 is slid to the upper part of the first limit groove 4, the first tension spring 8 pushes the first limit shaft 7 into the first limit groove 4, a click sound is heard to indicate that the shaft sleeve 2 is completely installed, the end cover 3 is sleeved on the right side of the main shaft 1, and similarly, the second limit shaft 12 is pulled like the outer side during installation, when the end cover 3 is sleeved on the main shaft 1, the second limit shaft 12 is loosened, along with the movement of the shaft sleeve 2, when the second limit shaft 12 moves to the upper part of the second limit groove 5, the second tension spring 13 pulls the second limit shaft 12 into the second limit groove 5, and a click sound is heard to indicate that the end cover 3 is installed completely; the utility model is suitable for an among the mechanical seal device, through setting up first spacing groove 4 and the cooperation of first spacing axle 7, second spacing groove 5 cooperates with spacing axle 12 of second to axle sleeve 2 and end cover 3 are fixed in the position on main shaft 1, have guaranteed that axle sleeve 2 can not control with end cover 3 and throw off, thereby make the leakproofness of whole device better.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (8)

1. The utility model provides a multi-spring type mechanical seal device, includes main shaft (1), and main shaft (1) left side cover is equipped with axle sleeve (2), and axle sleeve (2) right side cover is equipped with end cover (3), its characterized in that, axle sleeve (2) left side sliding connection first spacing axle (7), first spacing axle (7) lean on first extension spring (8) of outside one end fixed connection, and first extension spring (8) other end fixed connection axle sleeve (2) are outside, first spacing axle (7) lean on device center one end joint to locate main shaft (1) left first spacing groove (4), main shaft (1) outside is located to end cover (3) right-hand member cover, and end cover (3) right side sliding connection second spacing axle (12), and outside one end fixed connection second extension spring (13) are leaned on to second spacing axle (12), and the other end fixed connection axle sleeve (2) outside of second extension spring (13), the second spacing axle (12) lean on device center one end joint to locate the second spacing axle (1) right-hand member A groove (5).

2. A multi-spring mechanical seal according to claim 1, wherein the left end of the shaft sleeve (2) is provided with a first seal ring (6), and the right side of the shaft sleeve (2) is provided with a second seal ring (9).

3. A multi-spring mechanical seal device according to claim 2, wherein the first seal ring (6) and the second seal ring (9) are both sleeved outside the main shaft (1).

4. A multi-spring mechanical seal according to claim 1, wherein the end cap (3) is provided with a third seal ring (10) on the left side and a fourth seal ring (11) on the right side.

5. A multi-spring mechanical seal according to claim 4 wherein said third seal ring (10) is sleeved on the right side of the shaft sleeve (2).

6. A multi-spring mechanical seal device according to claim 4 or 5, wherein the fourth seal ring (11) is sleeved on the right side of the main shaft (1).

7. A multi-spring type mechanical sealing device according to claim 1, wherein the right end of the shaft sleeve (2) is slidably connected with a sliding rod (14), and the right end of the sliding rod (14) is fixedly connected with a top block (16).

8. A multi-spring mechanical seal according to claim 7 wherein said sliding rod (14) is externally sheathed with a spring (15).

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