CN217108214U - Sealing assembly with good sealing performance - Google Patents

Abstract

The utility model provides a seal assembly that leakproofness is good, including installing rotating ring seat, dynamic seal subassembly, static sealing ring, the elastic element on the axis body, wherein: the dynamic sealing assembly comprises a fixed ring and a dynamic sealing ring, the fixed ring is sleeved on the shaft body and is arranged on the dynamic ring seat, the static sealing ring is fixedly sleeved on the shaft body and is close to the fixed ring, and the dynamic sealing ring is movably sleeved on the shaft body and is positioned between the fixed ring and the static sealing ring; elastic element includes the guide bar, first elastic component, second elastic component, and the guide bar is installed and is close to the terminal surface that moves the sealing ring at solid fixed ring the utility model relates to a novelty, easy operation, through the setting of moving seal assembly and elastic element etc. first elastic component, second elastic component among the elastic element can exert a great effort to moving the sealing ring among the moving seal assembly, orders about and moves the sealing ring terminal surface and closely laminate with quiet sealing ring terminal surface, can not cause the phenomenon of fluid leakage, have guaranteed sealed effect, and the leakproofness is good.

Description

Sealing assembly with good sealing performance

Technical Field

The utility model relates to a sealed technical field especially relates to a seal assembly that leakproofness is good.

Background

The mechanical sealing device is a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to a rotating axis, keeping fit under the action of fluid pressure and the elastic force of a compensation mechanism and the matching of auxiliary sealing and sliding relatively. The conventional mechanical sealing device is mainly composed of: the end face sealing device comprises an end face sealing pair (a static sealing ring and a dynamic sealing ring), an elastic element (such as a spring), an auxiliary seal (such as an O-shaped ring), a transmission part (such as a transmission pin and a transmission screw), an anti-rotation part (such as an anti-rotation pin), a fastener (such as a spring seat, a push ring, a gland, a set screw and a shaft sleeve) and the like.

Most mechanical seals are contact seals during use. The mechanism is that the contact end surfaces of the dynamic sealing ring and the static sealing ring are tightly attached under the action of sealing fluid pressure and elastic element pressing force and slide relatively to achieve sealing. The dynamic sealing ring (also called dynamic ring) rotates with the pump shaft and is tightly jointed with the static ring to form a sealing surface so as to prevent the medium from leaking. The dynamic ring and the static ring slide relatively, when the sealing surface is worn, the dynamic ring can move axially to perform automatic compensation, and the good fit of the sealing surface is kept. The static sealing ring (also called static ring) is arranged on the pump shell and is still, and is matched with the dynamic ring to form a sealing surface to prevent the medium from leaking. However, after long-time operation, the acting force applied by the elastic element to the movable sealing ring can be gradually reduced, and then the fit tightness between the movable sealing ring and the static sealing ring can be reduced, which easily causes the phenomenon of fluid leakage.

SUMMERY OF THE UTILITY MODEL

Based on the technical problem that exists among the background art, the utility model provides a seal assembly that leakproofness is good, including installing the rotating ring seat on the axis body, moving seal assembly, static sealing ring, elastic element, wherein:

the dynamic sealing assembly comprises a fixed ring and a dynamic sealing ring, the fixed ring is sleeved on the shaft body and is arranged on the dynamic ring seat, the static sealing ring is fixedly sleeved on the shaft body and is close to the fixed ring, and the dynamic sealing ring is movably sleeved on the shaft body and is positioned between the fixed ring and the static sealing ring;

elastic element includes guide bar, first elastic component, second elastic component, and the guide bar is installed at solid fixed ring and is close to the terminal surface that moves the sealing ring, moves sliding connection between sealing ring and the guide bar, and first elastic component, second elastic component all install on the guide bar and all have the motion trend of ordering about to move to quiet sealing ring.

Preferably, the elastic element further comprises a connecting ring and a connecting rod, the connecting ring is eccentrically mounted on the guide rod and movably sleeved on the shaft body at a position between the fixed ring and the movable sealing ring, the first elastic part and the second elastic part are respectively sleeved on the guide rod at positions on two sides of the connecting ring, and the connecting ring is connected with the movable sealing ring through the connecting rod.

Preferably, one of the first elastic member and the second elastic member is in a compressed state, and the other is in a stretched state.

Preferably, the first elastic member and the second elastic member are both springs.

Preferably, the guide rod is detachably mounted on the end face, close to the dynamic sealing ring, of the fixed ring.

Preferably, the end face, close to the movable sealing ring, of the fixing ring is provided with a slot, and the guide rod can be inserted into the slot and fixed through a bolt.

Preferably, the guide rods are multiple, the guide rods are circumferentially arranged on the end face, close to the movable sealing ring, of the fixing ring in an array mode, and the connecting ring is arranged on the guide rods.

Preferably, the connecting rods are a plurality of, a plurality of connecting rods are circumferentially arranged on the end face of the connecting ring close to the movable sealing ring in an array mode, and the other ends of the connecting rods are connected with the movable sealing ring.

Compared with the prior art, the utility model provides a good seal assembly of leakproofness adopts above-mentioned technical scheme, has reached following technological effect:

1. through the arrangement of the dynamic seal assembly, the elastic element and the like, the first elastic part and the second elastic part in the elastic element can apply a larger acting force to the dynamic seal ring in the dynamic seal assembly to drive the end face of the dynamic seal ring to be tightly attached to the end face of the static seal ring, so that the phenomenon of fluid leakage is avoided, the seal effect is ensured, and the sealing performance is good;

2. through setting up such as a plurality of guide bars and a plurality of connecting rod, a plurality of guide bars can guarantee that the go-between can steady removal above that, and a plurality of connecting rods can guarantee to move the inseparable relative rotation of laminating between sealing ring and the quiet sealing ring, and the atress is even.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

FIG. 2 is a schematic cross-sectional view of the dynamic seal assembly and the elastic element of the present invention;

fig. 3 is a schematic view of the overall structure of the elastic element of the present invention.

In the figure: 1. the shaft body, 2, the movable ring seat, 3, the movable sealing assembly, 31, the fixed ring, 32, the movable sealing ring, 4, the static sealing ring, 5, the elastic element, 51, the guide rod, 52, the first elastic element, 53, the second elastic element, 54, the connecting ring, 55, the connecting rod and 6 the bolt.

Detailed Description

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1-3, the utility model provides a seal assembly that leakproofness is good, including installing movable ring seat 2, movable seal assembly 3, static sealing ring 4, elastic element 5 on axis body 1, wherein:

the dynamic sealing assembly 3 comprises a fixing ring 31 and a dynamic sealing ring 32, the fixing ring 31 is sleeved on the shaft body 1 and is arranged on the dynamic ring seat 2, the static sealing ring 4 is fixedly sleeved on the shaft body 1 at a position close to the fixing ring 31, and the dynamic sealing ring 32 is movably sleeved on the shaft body 1 at a position between the fixing ring 31 and the static sealing ring 4; in operation, the end surfaces of the static seal ring 4 and the dynamic seal ring 32 close to each other rotate relatively.

The elastic element 5 comprises a guide rod 51, a first elastic member 52 and a second elastic member 53, the guide rod 51 is mounted on the end surface of the fixed ring 31 close to the movable sealing ring 32, the movable sealing ring 32 is slidably connected with the guide rod 51, and the first elastic member 52 and the second elastic member 53 are both mounted on the guide rod 51 and have a movement tendency of driving the movable sealing ring 32 to move towards the static sealing ring 4. At this time, one of the first elastic member 52 and the second elastic member 53 is in a compressed state, and the other is in a stretched state. Further, under the action of the first elastic member 52 and the second elastic member 53, a large acting force can be applied to the movable sealing ring 32, so that the end face of the movable sealing ring 32 is tightly attached to the end face of the static sealing ring 4; preferably, the first elastic member 52 and the second elastic member 53 are both springs. Referring to fig. 3, further, a plurality of guide rods 51 may be provided, a plurality of guide rods 51 are circumferentially arranged on the end surface of the fixed ring 31 close to the movable sealing ring 32, and the connection ring 54 is arranged on the plurality of guide rods 51. In addition, the number of the first elastic elements 52 and the second elastic elements 53 is consistent with the number of the guide rods 51, and the first elastic elements 52 and the second elastic elements 53 can enable the dynamic sealing ring 32 to be stressed uniformly, so that the dynamic sealing ring can rotate in close fit with the end face of the static sealing ring 4, and the sealing effect is good.

Further, the elastic element 5 further includes a connecting ring 54 and a connecting rod 55, the connecting ring 54 is eccentrically mounted on the guide rod 51 and movably sleeved on the shaft body 1 at a position between the fixed ring 31 and the movable sealing ring 32, the first elastic member 52 and the second elastic member 53 are respectively sleeved on the guide rod 51 at positions on both sides of the connecting ring 54, and the connecting ring 54 is connected with the movable sealing ring 32 through the connecting rod 55. Preferably, the connecting rod 55 that sets up is a plurality of, and a plurality of connecting rods 55 one end circumference array is installed and is close to the terminal surface that moves sealing ring 32 at go-between 54, and a plurality of connecting rods 55 other ends all are connected with moving sealing ring 32, and the removal of a plurality of connecting rods 55 can be even drive move sealing ring 32 and remove, and is sealed effectual.

The specific working principle is as follows: referring to the state shown in fig. 1, in use, one of the first elastic member 52 and the second elastic member 53 is in a compressed state, and the other one is in a stretched state, that is, the first elastic member 52 on the left side is in a compressed state, and the second elastic member 53 on the right side is in a stretched state, under the action of the first elastic member 52 and the second elastic member 53, a rightward acting force is applied to the connecting ring 54, and the rightward movement of the connecting ring 54 can drive the connecting rod 55 and the movable sealing ring 32 to move rightward, so that the end face of the movable sealing ring 32 can be attached to the end face of the stationary sealing ring 4, and the two can rotate relatively; under the common effort through first elastic component 52, second elastic component 53, can closely laminate between the terminal surface of dynamic seal ring 32 and the quiet sealing ring 4, and then improved sealed effect, the leakproofness is good. Meanwhile, due to the arrangement of the guide rods 52 and the connecting rods 55, the dynamic sealing ring 32 can be uniformly stressed and stably moved in the moving process.

For the installation of guide bar 51 with demolish the convenience, install guide bar 51 detachable at solid fixed ring 31 and be close to the terminal surface that moves sealing ring 32, be close to the terminal surface that moves sealing ring 32 at solid fixed ring 31 simultaneously and be equipped with the slot, guide bar 51 can insert to be established in the slot and fixed through bolt 6, this setting makes things convenient for guide bar 51's dismantlement and installation, convenient to use.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims (8)

1. The utility model provides a seal assembly that leakproofness is good, characterized in that, including installing movable ring seat (2), movable seal subassembly (3), static seal ring (4), elastic element (5) on axis body (1), wherein:

the dynamic seal assembly (3) comprises a fixed ring (31) and a dynamic seal ring (32), the fixed ring (31) is sleeved on the shaft body (1) and is installed on the dynamic ring seat (2), the static seal ring (4) is fixedly sleeved on the shaft body (1) at a position close to the fixed ring (31), and the dynamic seal ring (32) is movably sleeved on the shaft body (1) at a position between the fixed ring (31) and the static seal ring (4);

the elastic element (5) comprises a guide rod (51), a first elastic part (52) and a second elastic part (53), the guide rod (51) is installed on the end face, close to the movable sealing ring (32), of the fixing ring (31), the movable sealing ring (32) is in sliding connection with the guide rod (51), and the first elastic part (52) and the second elastic part (53) are installed on the guide rod (51) and have a movement trend of driving the movable sealing ring (32) to move towards the static sealing ring (4).

2. The seal assembly with good sealing performance according to claim 1, wherein the elastic element (5) further comprises a connecting ring (54) and a connecting rod (55), the connecting ring (54) is eccentrically installed on the guide rod (51) and movably sleeved on the shaft body (1) at a position between the fixed ring (31) and the movable sealing ring (32), the first elastic member (52) and the second elastic member (53) are respectively sleeved on the guide rod (51) at positions on two sides of the connecting ring (54), and the connecting ring (54) is connected with the movable sealing ring (32) through the connecting rod (55).

3. A good seal assembly according to claim 2, wherein one of the first and second elastic members (52, 53) is in a compressed state and the other is in a stretched state.

4. A good sealing seal assembly according to any of claims 1-3, wherein the first and second resilient members (52, 53) are both springs.

5. A sealing assembly with good sealing performance according to claim 4, characterized in that the guide rod (51) is detachably arranged on the end face, close to the movable sealing ring (32), of the fixing ring (31).

6. A sealing assembly with good sealing performance according to claim 5, characterized in that the end face, close to the movable sealing ring (32), of the fixing ring (31) is provided with a slot, and the guide rod (51) can be inserted into the slot and fixed through the bolt (6).

7. The seal assembly with good sealing performance according to claim 2 or 3, wherein the number of the guide rods (51) is multiple, the guide rods (51) are circumferentially arranged on the end face, close to the movable sealing ring (32), of the fixing ring (31) in an array mode, and the connecting ring (54) is arranged on the guide rods (51).

8. The seal assembly with good sealing performance according to claim 7, wherein the connecting rods (55) are multiple, one ends of the connecting rods (55) are circumferentially arranged on the end face, close to the movable seal ring (32), of the connecting ring (54) in an array mode, and the other ends of the connecting rods (55) are connected with the movable seal ring (32).

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