CN214999400U

CN214999400U - Novel mechanical sealing structure suitable for high pressure

Info

Publication number: CN214999400U
Application number: CN202120437471.4U
Authority: CN
Inventors: 施阳春; 刘楠楠
Original assignee: Kunshan Fu Industrial Equipment Co ltd
Current assignee: Kunshan Fu Industrial Equipment Co ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-12-03
Anticipated expiration: 2031-03-01

Abstract

The utility model discloses a novel mechanical sealing structure suitable for high pressure, which belongs to the technical field of mechanical sealing, and comprises an axis body, wherein the surface of the axis body is sleeved with an axis sleeve, the surface of the axis sleeve is sleeved with a gland, a sealing ring structure is arranged between the axis sleeve and the gland, an anti-rotation structure is arranged between the axis sleeve and the gland and on one side of the sealing ring structure, and a gasket is arranged on one side of the gland; the utility model discloses a setting of axle sleeve, seal ring structure and rotation-proof structure, the axle sleeve can be pressed the sealed ring structure of moving when following the axis body rotation, breach between quiet ring and the rotating ring is pressed and is held together, makes the surface of quiet ring and rotating ring hug closely in the inboard of axle sleeve and gland to realize sealed purpose, through the setting of this device, can effectively solve the not high pressure resistant problem of mechanical seal and prevent changeing the not good problem of effect, makes the mechanical seal stability improve, makes the mechanical seal withstand higher pressure, thereby increase mechanical seal life.

Description

Novel mechanical sealing structure suitable for high pressure

Technical Field

The utility model relates to a mechanical seal technical field specifically is a novel mechanical seal structure suitable for it is highly compressed.

Background

The mechanical seal is a shaft seal device of rotating machinery, the sealing ring is the most main element of the mechanical seal, the sealing ring is an annular sealing element with a notch, the sealing ring is placed in an annular groove of a sleeve, the sleeve and a shaft rotate together, and the sealing ring is tightly pressed on the inner hole wall of a static element by the elasticity of the pressed notch, so that the sealing effect can be achieved.

The existing sealing ring structure needs to be embedded and protected, and the shaft sleeve is of a split structure and cannot bear larger pressure; the anti-rotation structure adopts a pin structure, so that the pressure resistance degree is low, and the anti-rotation failure and other conditions are easy to occur when the pressure is too high; the service life of the mechanical seal is reduced, so that a novel mechanical seal structure suitable for high pressure needs to be provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be applicable to highly compressed novel mechanical seal structure, possess the advantage that promotes mechanical seal high pressure resistance, increase mechanical seal life to solve 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 be applicable to highly compressed novel mechanical seal structure, includes the axis body, the axle sleeve has been cup jointed on the surface of axis body, the gland has been cup jointed on the surface of axle sleeve, be equipped with the sealing ring structure between axle sleeve and the gland, one side that just is located the sealing ring structure between axle sleeve and the gland is equipped with prevents changeing the structure, one side of gland is equipped with the gasket, one side threaded connection of gasket has the fitting bolt, the one end of fitting bolt runs through the gasket and extends to the outside of gasket and the surface threaded connection of gland.

Preferably, the sealing ring structure includes quiet ring, one side of quiet ring is provided with the rotating ring, be equipped with the connecting axle between quiet ring and the axle sleeve, the surface of connecting axle and the surperficial roll connection of axle sleeve and quiet ring.

Preferably, the surface of the shaft sleeve is provided with a groove, a static ring rubber ring is fixedly mounted in the inner cavity of the groove, and one side, far away from the groove, of the static ring rubber ring is attached to the surface of the static ring.

Preferably, the anti-rotation structure comprises a fixture block, one side of the fixture block is clamped with the surface of the movable ring, a spring is fixedly mounted on the other side of the fixture block, and one side, far away from the fixture block, of the spring is fixedly mounted on the surface of the gland.

Preferably, the inner wall of axle sleeve has seted up the spout, the inner chamber of spout is equipped with the axle sleeve rubber ring, the axle sleeve rubber ring is kept away from the surface laminating of one side of spout and axis body.

Preferably, one side of the shaft sleeve is fixedly provided with a positioning ring, and the top of the positioning ring is in threaded connection with a driving screw.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a setting of axle sleeve, seal ring structure and rotation-proof structure, the axle sleeve can be pressed the sealed ring structure of moving when following the axis body rotation, breach between quiet ring and the rotating ring is pressed and is held together, makes the surface of quiet ring and rotating ring hug closely in the inboard of axle sleeve and gland to realize sealed purpose, through the setting of this device, can effectively solve the not high pressure resistant problem of mechanical seal and prevent changeing the not good problem of effect, makes the mechanical seal stability improve, makes the mechanical seal withstand higher pressure, thereby increase mechanical seal life.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the point A in FIG. 1 according to the present invention;

fig. 3 is an enlarged view of the point B in fig. 1 according to the present invention.

In the figure: 1. a shaft body; 2. a shaft sleeve; 3. a gland; 4. a seal ring structure; 401. a stationary ring; 402. a moving ring; 403. a connecting shaft; 5. an anti-rotation structure; 501. a clamping block; 502. a spring; 6. a gasket; 7. a locking bolt; 8. a groove; 9. a stationary ring rubber ring; 10. a chute; 11. a shaft sleeve rubber ring; 12. positioning rings; 13. the screw is driven.

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.

Referring to fig. 1 and 2, the present invention provides a technical solution: a novel mechanical sealing structure suitable for high pressure comprises a shaft body 1, wherein a shaft sleeve 2 is sleeved on the surface of the shaft body 1, a sliding groove 10 is formed in the inner wall of the shaft sleeve 2, a shaft sleeve rubber ring 11 is arranged in an inner cavity of the sliding groove 10, one side, away from the sliding groove 10, of the shaft sleeve rubber ring 11 is attached to the surface of the shaft body 1, a positioning ring 12 is fixedly installed on one side of the shaft sleeve 2, and a driving screw 13 is connected to the top of the positioning ring 12 in a threaded mode;

the connection part between the shaft sleeve 2 and the shaft body 1 can be sealed by arranging the shaft sleeve rubber ring 11, so that fluid is prevented from overflowing, the positioning ring 12 is made of HT200 material through the arrangement of the positioning ring 12 and the driving screw 13, the material has certain strength, wear resistance, corrosion resistance and shock absorption, and can bear larger stress, and the sealing ring can be positioned by arranging the positioning ring 12, so that the stability of sealing work is ensured;

referring to fig. 1 and 2, a gland 3 is sleeved on the surface of a shaft sleeve 2, a sealing ring structure 4 is arranged between the shaft sleeve 2 and the gland 3, the sealing ring structure 4 comprises a stationary ring 401, a movable ring 402 is arranged on one side of the stationary ring 401, a connecting shaft 403 is arranged between the stationary ring 401 and the shaft sleeve 2, the surface of the connecting shaft 403 is in rolling connection with the surfaces of the shaft sleeve 2 and the stationary ring 401, a groove 8 is formed in the surface of the shaft sleeve 2, a stationary ring rubber ring 9 is fixedly arranged in an inner cavity of the groove 8, and one side, far away from the groove 8, of the stationary ring rubber ring 9 is attached to the surface of the stationary ring 401;

through the arrangement of the sealing ring structure 4, the structure is made of tungsten carbide materials and has the advantages of high strength and corrosion resistance, the static ring 401 and the shaft sleeve 2 can be connected together through the arrangement of the connecting shaft 403, the static ring rubber ring 9 can be fixed through the groove 8, and the static ring rubber ring 9 can be used for sealing and damping the static ring 401 and the shaft sleeve 2;

referring to fig. 1 and 3, an anti-rotation structure 5 is disposed between the shaft sleeve 2 and the gland 3 and on one side of the sealing ring structure 4, the anti-rotation structure 5 includes a fixture block 501, one side of the fixture block 501 is clamped with the surface of the rotating ring 402, the other side of the fixture block 501 is fixedly provided with a spring 502, one side of the spring 502 away from the fixture block 501 is fixedly mounted with the surface of the gland 3, one side of the gland 3 is provided with a gasket 6, one side of the gasket 6 is in threaded connection with a locking bolt 7, and one end of the locking bolt 7 penetrates through the gasket 6 and extends to the outside of the gasket 6 to be in threaded connection with the surface of the gland 3;

through the setting of rotation-proof structure 5, can fix the locking to sealing ring structure 4, spring 502 can fix the position of fixture block 501, prevents that it from producing comparatively obvious displacement at the in-process of motion, and gasket 6 and locking bolt 7's setting can be fixed gland 3.

The working principle is as follows: when the axis body 1 is at the pivoted in-process, through 11 zonulae occludens of axle sleeve rubber ring between axle sleeve 2 and the axis body 1, axle sleeve 2 follows the rotation of axis body 1 this moment, axle sleeve 2 presses dynamic seal ring structure 4 at the pivoted in-process, breach between quiet ring 401 and the rotating ring 402 is pressed together this moment, make the surface of quiet ring 401 and rotating ring 402 hug closely in axle sleeve 2 and gland 3's inboard, thereby realize sealed purpose, prevent that setting up of rotating-proof structure 5 can fix sealing ring structure 4, prevent that it from following axle sleeve 2 and rotating, influence sealed effect.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a be applicable to highly compressed novel mechanical seal structure, includes axis body (1), its characterized in that: the utility model discloses a gland structure, including axis body (1), gland (3), shaft sleeve (2), gland (3) have been cup jointed on the surface of axis body (1), be equipped with between shaft sleeve (2) and gland (3) seal ring structure (4), one side that just is located seal ring structure (4) between shaft sleeve (2) and gland (3) is equipped with prevents changeing structure (5), one side of gland (3) is equipped with gasket (6), one side threaded connection of gasket (6) has latch bolt (7), the one end of latch bolt (7) runs through gasket (6) and extends to the outside of gasket (6) and the surface threaded connection of gland (3).

2. The novel mechanical seal structure suitable for high pressure according to claim 1, characterized in that: the sealing ring structure (4) comprises a static ring (401), a dynamic ring (402) is arranged on one side of the static ring (401), a connecting shaft (403) is arranged between the static ring (401) and the shaft sleeve (2), and the surface of the connecting shaft (403) is in rolling connection with the surfaces of the shaft sleeve (2) and the static ring (401).

3. The novel mechanical seal structure suitable for high pressure according to claim 2, characterized in that: the surface of the shaft sleeve (2) is provided with a groove (8), a static ring rubber ring (9) is fixedly mounted in an inner cavity of the groove (8), and one side, away from the groove (8), of the static ring rubber ring (9) is attached to the surface of the static ring (401).

4. The novel mechanical seal structure suitable for high pressure according to claim 1, characterized in that: anti-rotating structure (5) include fixture block (501), one side and the surperficial joint of rotating ring (402) of fixture block (501), the opposite side fixed mounting of fixture block (501) has spring (502), one side and the fixed surface installation of gland (3) that fixture block (501) were kept away from in spring (502).

5. The novel mechanical seal structure suitable for high pressure according to claim 1, characterized in that: the inner wall of the shaft sleeve (2) is provided with a sliding groove (10), the inner cavity of the sliding groove (10) is provided with a shaft sleeve rubber ring (11), and one side, away from the sliding groove (10), of the shaft sleeve rubber ring (11) is attached to the surface of the shaft body (1).

6. The novel mechanical seal structure suitable for high pressure according to claim 1, characterized in that: one side of the shaft sleeve (2) is fixedly provided with a positioning ring (12), and the top of the positioning ring (12) is in threaded connection with a driving screw (13).