A sealing component

Abstract

The present invention discloses a sealing assembly, which includes a support ring, a pressing ring, and an annular seal disposed between the support ring and the pressing ring. Among them, the support ring and the pressing ring are connected in a relatively floating manner along the axial direction. The annular seal includes at least one set of seal rings, and all the seal rings are arranged on one axial end of the pressing ring and axially press against the axial end face of the support ring. This sealing assembly can be integrally installed into the device to be sealed or can be integrally removed from the sealing device, which ensures the integrity of the seal rings during installation and disassembly, thereby ensuring the reliability of sealing and that the disassembled medium will not be contaminated, and both installation and disassembly are very convenient.

Description

Technical Field

[0001] The present invention relates to a sealing component, and more particularly to an integrally installable and removable sealing component. Background Art

[0002] In the fields of nuclear power, petrochemical, food, etc., some shaft seals need to periodically replace the seals due to the need to repair or replace related components. The traditional sealing rings do not have their own protection and complete disassembly structure. The installation and disassembly process is not only difficult, but there is also a risk of seal failure due to damage to the sealing ring during installation and disassembly, and there is a risk of seal ring fragments falling into the medium during disassembly, resulting in medium pollution. Therefore, it is necessary to design a sealing component that can be integrally installed and disassembled to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a sealing component that can be integrally installed and disassembled.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a sealing component, the sealing component includes a support ring, a pressing ring, and an annular seal disposed between the support ring and the pressing ring. Among them, the support ring and the pressing ring are connected so as to be axially relatively floating, and the annular seal includes at least one set of sealing rings, and all the sealing rings are disposed on one axial end of the pressing ring and axially press against the axial end face of the support ring.

[0005] Preferably, a ring-shaped protrusion is provided on one axial end of the pressing ring, and all the sealing rings are installed on the ring-shaped protrusion; a ring-shaped groove is provided on one axial end of the support ring to cooperate with the ring-shaped protrusion, and the ring-shaped protrusion can be inserted into the ring-shaped groove so as to slide axially relative to each other. The sealing component further includes a connecting member connecting the pressing ring and the support ring to axially limit the two.

[0006] Further, the annular seal includes an inner sealing ring and an outer sealing ring, and at least one set of the inner sealing ring and the outer sealing ring are respectively provided, and both the inner sealing ring and the outer sealing ring are installed on the ring-shaped protrusion.

[0007] Furthermore, the outer peripheral portion of the inner sealing ring cooperates with the inner peripheral portion of the ring-shaped protrusion, and the inner peripheral portion of the outer sealing ring cooperates with the outer peripheral portion of the ring-shaped protrusion.

[0008] As a specific implementation manner, the inner sealing ring and the outer sealing ring both have a plurality of groups arranged axially in sequence.

[0009] Preferably, a plurality of waist-shaped grooves are circumferentially and spacedly arranged on the circumferential protrusion, a plurality of pin holes are correspondingly arranged on the support ring, the connecting member is a connecting pin that is fitted through the pin holes, and the connecting pin is axially penetrated through the waist-shaped grooves.

[0010] Furthermore, the length of the waist-shaped groove is not less than the sum of the diameter of the connecting pin and the maximum axial compression amount of all the sealing rings.

[0011] Even further, there are gaps between the two side groove walls of the waist-shaped groove along the axial direction of the circumferential protrusion and the connecting pin.

[0012] As a specific implementation manner, at least two groups of pin holes are provided, and all the pin holes are evenly and circumferentially spacedly distributed on the support ring. Correspondingly, a plurality of groups of waist-shaped grooves and connecting pins are also provided.

[0013] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: In the sealing assembly of the present invention, by installing the annular sealing member on the axial end of the pressing ring and connecting the pressing ring and the support ring in a relatively floating manner to form an integral sealing assembly, it can be integrally installed into the device to be sealed or can be integrally removed from the sealing device, which ensures the integrity of the annular sealing member during installation and disassembly, thereby ensuring the reliability of sealing and that the disassembly medium will not be contaminated, and both installation and disassembly are very convenient. Description of the Drawings

[0014] Attached Figure 1 is a cross-sectional view of the sealing assembly according to Embodiment 1 of the present invention;

[0015] Attached Figure 2 is a cross-sectional view of the sealing device applying the sealing assembly according to Embodiment 1 of the present invention;

[0016] Attached Figure 3 is Figure 2 an enlarged schematic view of the position of Part A in

[0017] Attached Figure 4 is a cross-sectional view of the sealing device according to Embodiment 2 of the present invention;

[0018] Wherein: 100, stuffing box; 200, 200', gland; 300, shaft rod; 400, sealing assembly;

[0019] 1, pressing ring; 11, circumferential protrusion; 12, connecting end; 13, pressing end; 14, pressing end face; 15, waist-shaped groove; 2, support ring; 21, annular groove; 22, pin hole; 3, inner sealing ring; 4, outer sealing ring; 5, connecting pin. Detailed Embodiments

[0020] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Embodiment 1

[0022] Refer to Figure 1 the shown sealing assembly. The sealing assembly includes a support ring 2, a pressing ring 1, and an annular seal disposed between the support ring 2 and the pressing ring 1. Among them, the support ring 2 and the pressing ring 1 are connected in a manner that can relatively float axially. The annular seal includes at least one set of seal rings, and all the seal rings are arranged on one axial end of the pressing ring 1 and axially press against the axial end face of the support ring 2, and the seal connection with the part to be sealed is achieved through the seal rings. In this way, an integral sealing assembly is formed among the support ring 2, the pressing ring 1, and all the seal rings. By axially mating the support ring 2 and the pressing ring 1 with the parts to be sealed respectively, the entire sealing assembly can be installed between the parts to be sealed. When installing and disassembling the sealing assembly, it is realized by installing and disassembling the entire sealing assembly, so as to ensure the integrity of the entire seal ring during installation, and completely remove the integral sealing assembly without damaging the seal ring during disassembly.

[0023] Specifically, refer to Figure 1 as shown, there is a ring-shaped protrusion 11 on one axial end of the pressing ring 1, and all the seal rings are installed on the ring-shaped protrusion 11; there is an annular groove 21 on one axial end of the support ring 2 that cooperates with the ring-shaped protrusion 11, and the ring-shaped protrusion 11 can be inserted into the annular groove 21 in a relatively sliding manner axially, so as to realize the floating connection between the support ring 2 and the pressing ring 1.

[0024] The sealing assembly further includes a connecting member 5 that connects the pressing ring 2 and the support ring 1 to axially limit the two. In this embodiment, a plurality of waist-shaped grooves 15 are circumferentially spaced on the ring-shaped protrusion 11, and a plurality of pin holes 22 are correspondingly provided on the support ring 2. The connecting member 5 is a connecting pin 5 that is fitted through the pin holes 22, and the connecting pin 5 is axially inserted into the waist-shaped grooves 15.

[0025] When specifically setting, the length of the waist-shaped groove 15 is not less than the sum of the diameter of the connecting pin 5 and the maximum axial compression amount of all the seal rings, so as to facilitate the axial compression of the inner seal ring 3 / outer seal ring 4 after being installed in the sealing device to achieve sealing. At least two groups of pin holes 22 are provided, and all the pin holes 22 are evenly circumferentially spaced on the support ring 2. Correspondingly, a plurality of groups of waist-shaped grooves 15 and connecting pins 5 are also respectively provided. Preferably, after the sealing assembly is installed, there are gaps between the two side groove walls of the waist-shaped groove 15 along the axial direction of the ring-shaped protrusion 11 and the connecting pin 5, so as to facilitate installation and meet the sealing of the seal ring along the axial compression when the sealing assembly is installed between the parts to be sealed.

[0026] See Figure 1 As shown, in this embodiment, the annular seal includes an inner seal ring 3 and an outer seal ring 4. At least one set of inner seal ring 3 and outer seal ring 4 are provided respectively, and both the inner seal ring 3 and the outer seal ring 4 are installed on the annular protrusion 11. Here, both the inner seal ring 3 and the outer seal ring 4 have multiple sets arranged axially in sequence. Among them, the outer peripheral part of the inner seal ring 3 cooperates with the inner peripheral part of the annular protrusion 11, and the inner peripheral part of the outer seal ring 4 cooperates with the outer peripheral part of the annular protrusion 11. The sealing connection with the component to be sealed is achieved through the inner peripheral part of the inner seal ring 3 and the outer peripheral part of the outer seal ring 4.

[0027] See Figure 2 、 Figure 3 As shown is a specific sealing device applying the sealing component of this embodiment. The sealing device includes a stuffing box 100 with a stuffing cavity, a sealing gland 200 fixed on the stuffing box 100, and a shaft rod 300 inserted axially into the stuffing box 100. The sealing component 400 is used for the sealing connection between the shaft rod 300 and the stuffing box 100. The sealing gland 200 and the stuffing box 100 are fixedly connected by multiple bolts. The sealing component 400 is axially pressed between the sealing gland 200 and the stuffing box 100. Among them, the support ring 2 is received in the stuffing cavity in a mating manner. The axial end of the pressing ring 1 without the annular protrusion 11 axially cooperates with the sealing gland 200. The inner peripheral part of the inner seal ring 3 and the outer peripheral part of the shaft rod 300 are hermetically cooperated with each other. The outer peripheral part of the outer seal ring 4 and the circumferential side wall of the stuffing cavity are hermetically cooperated with each other.

[0028] When specifically arranged, the support ring 2 is completely received in the stuffing cavity; the pressing ring 1 is integrally T-shaped. The pressing ring 1 further includes a pressing end part 13 that cooperates with the sealing end cover 200 and a connecting end part 12 provided between the pressing end part 13 and the annular protrusion 11. The pressing end face 14 on the pressing end part 13 is a conical surface for axially cooperating with the conical end face of the pressing end cover 200. At least part of the connecting end part 12 can axially penetrate into the stuffing cavity in a mating manner, so as to axially extrude the inner seal ring 3 and the outer seal ring 4 to form sufficient sealing stress at the sealing part.

[0029] Both the inner seal ring 3 and the outer seal ring 4 are arranged on the annular protrusion 11 and have multiple sets arranged axially. When arranging, the total thickness of all the inner seal rings 3 / outer seal rings 4 should be less than the depth of the stuffing cavity, so that they can be completely received in the stuffing cavity after being extruded to achieve sealing.

[0030] Thus, during installation, first assemble the components on the sealing assembly 400, then insert the end of the sealing assembly 400 with the support ring 2 along the axial direction into the stuffing box and sleeved on the shaft rod 300. Subsequently, sleeve on the compression end cover 200 and apply axial pressure to the compression end cover 200 to make it fixedly connected with the stuffing box 100 relatively. In this way, the inner sealing ring 3 and the outer sealing ring 4 are axially extruded in the stuffing box to achieve the sealing between the shaft rod 300 and the stuffing box 100. The installation is very convenient and will not cause damage to the sealing rings.

[0031] When disassembly is required, loosen the connection between the compression end cover 200 and the stuffing box 100, then disassemble the sealing assembly 400 as a whole. By removing each connecting pin 5, the compression ring 1 and the support ring 2 can be separated relatively. Subsequently, each sealing ring can be taken out, which can ensure the integrity of each sealing ring and ensure that the medium is not contaminated.

[0032] In summary, the sealing assembly of the present invention can be integrally installed into the device to be sealed or can be integrally removed from the sealing device, which ensures the integrity of the sealing rings during installation and disassembly, thereby ensuring the reliability of the seal and that the disassembled medium is not contaminated. The installation and disassembly are both very convenient.

[0033] Embodiment 2

[0034] Refer to Figure 4 the shown sealing device. The main difference from Embodiment 1 lies in the specific form of the sealing gland 200. In this embodiment, the sealing gland 200' is a compression nut sleeved on the shaft end of the stuffing box 100. The compression nut is provided with internal threads and is fixedly connected with the stuffing box 100 through thread cooperation, so that the sealing assembly 400 is axially pressed between the sealing gland 200' and the stuffing box 100.

[0035] The above embodiments are only used to illustrate the technical concept and features of the present invention, and their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A sealing component, characterized in that: The sealing assembly includes a support ring, a pressing ring, and an annular seal disposed between the support ring and the pressing ring. Among them, the support ring and the pressing ring are connected in a relatively floating manner along the axial direction. The annular seal includes at least one set of seal rings, and all the seal rings are arranged on one axial end of the pressing ring and axially press against the axial end face of the support ring. Among them, there is a ring-shaped protrusion on one axial end of the pressing ring, and all the seal rings are mounted on the ring-shaped protrusion; there is an annular groove on one axial end of the support ring that cooperates with the ring-shaped protrusion, and the ring-shaped protrusion can be inserted into the annular groove in a relatively sliding manner along the axial direction. The sealing assembly further includes a connecting member that connects the pressing ring and the support ring to axially limit the two.

2. The sealing component according to claim 1, wherein: The annular seal includes an inner seal ring and an outer seal ring, and at least one set of the inner seal ring and the outer seal ring are respectively provided. The inner seal ring and the outer seal ring are both mounted on the ring-shaped protrusion.

3. The sealing assembly according to claim 2, wherein: The outer peripheral portion of the inner seal ring cooperates with the inner peripheral portion of the ring-shaped protrusion, and the inner peripheral portion of the outer seal ring cooperates with the outer peripheral portion of the ring-shaped protrusion.

4. The sealing assembly according to claim 3, characterized in that: The inner seal ring and the outer seal ring both have multiple sets arranged in sequence along the axial direction.

5. The sealing assembly according to claim 1, characterized in that: A plurality of waist-shaped grooves are circumferentially spaced on the ring-shaped protrusion, and a plurality of pin holes are correspondingly provided on the support ring. The connecting member is a connecting pin that is cooperatively inserted into the pin holes, and the connecting pin is axially inserted into the waist-shaped grooves.

6. The sealing assembly according to claim 5, characterized in that: The length of the waist-shaped groove is not less than the sum of the diameter of the connecting pin and the maximum axial compression amount of all the seal rings.

7. The sealing assembly according to claim 6, characterized in that: There are gaps between the two side groove walls of the waist-shaped groove along the axial direction of the ring-shaped protrusion and the connecting pin.

8. The sealing assembly according to claim 5, characterized in that: There are at least two sets of the pin holes, and all the pin holes are evenly spaced circumferentially on the support ring. Correspondingly, there are also multiple sets of the waist-shaped grooves and the connecting pins.

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