CN219932951U

CN219932951U - Rotary shaft sealing element

Info

Publication number: CN219932951U
Application number: CN202321294032.8U
Authority: CN
Inventors: 姚明财
Original assignee: Wuxi Dongqing Dyeing And Finishing Equipment Co ltd
Current assignee: Wuxi Dongqing Dyeing And Finishing Equipment Co ltd
Priority date: 2023-05-25
Filing date: 2023-05-25
Publication date: 2023-10-31
Anticipated expiration: 2033-05-25

Abstract

The utility model relates to the technical field of shaft sealing, in particular to a rotating shaft sealing element, which comprises a packing seat, an elastic compressing assembly, a V-shaped sealing ring and a gland, wherein the packing seat, the elastic compressing assembly, the V-shaped sealing ring and the gland are sequentially sleeved on a rotating shaft, an inner cavity is formed in the packing seat, the gland and the packing seat are combined to form a sealing space for installing the elastic compressing assembly and the V-shaped sealing ring, the elastic compressing assembly axially compresses the V-shaped sealing ring, so that the inner lip of the V-shaped sealing ring is in contact sealing with the rotating shaft, and the outer lip of the V-shaped sealing ring is in contact sealing with the side wall of the inner cavity. According to the compression deformation characteristic of the V-shaped sealing ring, the rotating shaft sealing piece applies certain axial pressure to the V-shaped sealing ring by utilizing the elastic compression assembly under the normal pressure condition; under the condition that pressure exists in the equipment, the pressure acts on the V-shaped sealing ring, so that the V-shaped sealing ring deforms to form sealing with the rotating shaft and the inner wall of the packing seat respectively, and compared with the traditional packing sealing, the V-shaped sealing ring has the advantages of good sealing performance, long durability of sealing elements, simplicity in maintenance and the like.

Description

Rotary shaft sealing element

Technical Field

The utility model relates to the technical field of shaft sealing, in particular to a rotary shaft sealing element.

Background

In transmission systems, rotating shafts are very common, and the seals are usually in the form of dynamic seals in contact with the shaft, and statistics show that most of the faults in the transmission system are related to seal leakage, and especially the dynamic seals of the rotating shaft are the areas where leakage is most likely to occur.

Reducing or even eliminating gaps is a main way of ensuring good tightness, however, many factors affecting the sealing performance and service life of the oil seal, such as sizing materials, structures, assembly, radial force, service conditions and the like, lead to the fact that the sealing performance of the existing sealing elements is drastically reduced along with the increase of service time, and the sealing elements are high in maintenance difficulty and cost, and are difficult to continuously meet the functionality of the sealing elements, particularly under severe working conditions such as high temperature, high speed, heavy load, corrosive media and the like, which puts higher requirements on the reliability of the sealing elements and needs to be further optimized.

Disclosure of Invention

Based on the above problems, the utility model aims to provide a rotary shaft sealing element, which improves the sealing capability and service life of the rotary shaft sealing element and meets more use conditions.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a rotation axis sealing member, its includes that the cover is located packing seat, elasticity sticiss subassembly, V type sealing washer and the gland on the rotation axis in proper order, has seted up the inner chamber on the packing seat, and the gland encloses into the sealed space that is used for installing elasticity sticiss subassembly and V type sealing washer with the packing seat combination, and elasticity sticiss the subassembly and axially presses V type sealing washer for the inner lip and the rotation axis contact seal of V type sealing washer, the outer lip and the lateral wall contact seal of inner chamber of V type sealing washer.

Optionally, the elastic compressing assembly comprises a base, a spring and an upper cover, wherein the spring is clamped between the base and the upper cover, the outer side surface of the base abuts against the end surface wall of the inner cavity, and the outer side surface of the upper cover abuts against the V-shaped sealing ring.

Optionally, a rib is arranged on the outer side surface of the upper cover, and the rib is embedded into the V-shaped groove of the V-shaped sealing ring.

Optionally, limiting steps for loading the spring are respectively arranged on the inner side surface of the upper cover and the inner side surface of the base.

Optionally, the gland is provided with a protrusion embedded in the cavity.

Optionally, the gland and the packing seat are detachably connected through bolts.

In summary, the utility model has the beneficial effects that the rotating shaft sealing element applies certain axial pressure to the V-shaped sealing ring by utilizing the elastic compression assembly under normal pressure according to the compression deformation characteristic of the V-shaped sealing ring; under the condition that pressure exists in the equipment, the pressure acts on the V-shaped sealing ring, so that the V-shaped sealing ring deforms to form sealing with the inner walls of the rotating shaft and the packing seat respectively, and the sealing is tighter when the pressure is larger, compared with the traditional packing sealing, the sealing device has the advantages of good sealing performance, long durability of sealing elements, simplicity in maintenance and the like.

Drawings

FIG. 1 is a schematic view of a rotary shaft seal provided in an embodiment of the present utility model;

FIG. 2 is a schematic illustration of a split of a rotary shaft seal provided by an embodiment of the present utility model;

fig. 3 is an enlarged view at a in fig. 1.

In the figure:

1. a rotation shaft; 2. a filler seat; 21. an inner cavity; 3. a V-shaped sealing ring; 31. an inner lip; 32. an outer lip; 4. a gland; 41. a protrusion; 5. a base; 6. a spring; 7. an upper cover; 71. a rib; 72. a limit step; 8. and (5) a bolt.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar parts throughout, or parts having like or similar functions. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, mechanically connected, electrically connected, indirectly connected through an intermediary, or may be in communication with each other between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature. The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

Referring to fig. 1 to 3, the present preferred embodiment provides a rotary shaft seal member, which includes a packing seat 2, an elastic compressing assembly, a V-shaped seal ring 3 and a gland 4, which are sequentially sleeved on a rotary shaft 1.

Wherein, offer the inner chamber 21 on the packing seat 2, gland 4 and packing seat 2 are enclosed and are used for installing the sealed space that elasticity sticiss subassembly and V type sealing washer 3, and elasticity sticiss the subassembly and axially exert pressure to V type sealing washer 3 for the inner lip 31 and the rotation axis 1 contact seal of V type sealing washer 3, the outer lip 32 and the lateral wall contact seal of inner chamber 21 of V type sealing washer 3.

Preferably, the elastic compressing assembly comprises a base 5, a spring 6 and an upper cover 7, wherein the spring 6 is clamped between the base 5 and the upper cover 7, the outer side surface of the base 5 abuts against the end surface wall of the inner cavity 21, and the outer side surface of the upper cover 7 abuts against the V-shaped sealing ring 3. Under normal pressure, the elastic force of the spring 6 is utilized to apply pressure to the V-shaped sealing ring 3 to deform the V-shaped sealing ring, so that the V-shaped sealing ring 3 is sealed with the rotating shaft 1 inwards and sealed with the inner wall of the packing seat 2 outwards.

Further, be provided with bead 71 on the lateral surface of upper cover 7, bead 71 imbeds in the V type groove of V type sealing washer 3 for when axial pressurized, the inner lip 31 of V type sealing washer 3 and outer lip 32 outwards expand the deformation more easily, guarantee sealed effect.

Furthermore, the inner side surface of the upper cover 7 and the inner side surface of the base 5 are respectively provided with a limiting step 72 for loading the spring 6, so that the assembly structure of the elastic compression assembly is ensured, and the structural stability is improved.

In addition, the gland 4 is provided with a bulge 41 embedded in the inner cavity 21, and the gland 4 is detachably connected with the packing seat 2 through the bolt 8, so that the assembly and the structural maintenance are convenient.

In summary, according to the compression deformation characteristic of the V-shaped sealing ring, the rotating shaft sealing member applies certain axial pressure to the V-shaped sealing ring by using the elastic compression assembly under normal pressure; under the condition that pressure exists in the equipment, the pressure acts on the V-shaped sealing ring, so that the V-shaped sealing ring deforms to form sealing with the inner walls of the rotating shaft and the packing seat respectively, and the sealing is tighter when the pressure is larger, compared with the traditional packing sealing, the sealing device has the advantages of good sealing performance, long durability of sealing elements, simplicity in maintenance and the like.

The above embodiments merely illustrate the basic principles and features of the present utility model, and the present utility model is not limited to the above embodiments, but can be variously changed and modified without departing from the spirit and scope of the present utility model, which is within the scope of the present utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a rotation axis sealing member, its characterized in that, including packing seat (2), elasticity sticiss subassembly, V type sealing washer (3) and gland (4) on locating rotation axis (1) in proper order, inner chamber (21) have been seted up on packing seat (2), gland (4) with packing seat (2) make up into and be used for installing elasticity sticiss the subassembly with the sealed space of V type sealing washer (3), elasticity sticiss the subassembly to V type sealing washer (3) axial is exerted pressure for the interior lip (31) of V type sealing washer (3) with rotation axis (1) contact seal, the exterior lip (32) of V type sealing washer (3) with the lateral wall contact seal of inner chamber (21).

2. The rotary shaft seal according to claim 1, characterized in that the elastic compression assembly comprises a base (5), a spring (6) and an upper cover (7), wherein the spring (6) is clamped between the base (5) and the upper cover (7), the outer side surface of the base (5) abuts against the end surface wall of the inner cavity (21), and the outer side surface of the upper cover (7) abuts against the V-shaped sealing ring (3).

3. A rotary shaft seal according to claim 2, characterized in that the outer side of the upper cover (7) is provided with a bead (71), which bead (71) is embedded in a V-groove of the V-ring (3).

4. Rotary shaft seal according to claim 2, characterized in that the inner side of the upper cover (7) and the inner side of the base (5) are provided with limit steps (72) for loading the springs (6), respectively.

5. Rotary shaft seal according to claim 1, characterized in that the gland (4) is provided with a projection (41) which engages in the inner cavity (21).

6. Rotary shaft seal according to claim 1, characterized in that the gland (4) and the packing seat (2) are detachably connected by means of bolts (8).