Valve seat sealing ring with adjustable sealing performance

Abstract

The utility model discloses a valve seat sealing ring capable of adjusting sealing performance, which relates to the technical field of valve seat sealing rings, and aims to solve the technical problem that the valve seat sealing ring cannot be adjusted according to medium pressure fluctuation or working condition change at present, the valve seat sealing ring comprises a valve body, the inner wall of the valve body is provided with thread grooves which are axially distributed, and the inner wall of the valve body is provided with a thread ring in a threaded manner; an adjusting ring is fixedly installed in the threaded ring, a sealing ring is installed on the screwing-in face of the adjusting ring in a nested mode, and elastic fins are evenly distributed in the adjusting ring in the circumferential direction. The adjusting ring is driven by the threaded ring to move axially, the compression amount of the sealing ring is adjusted by combining the stepped clamping structure of the adjusting clamping block and the adjusting clamping groove, after the sealing ring is damaged, the compression amount of the sealing ring can be continuously adjusted by rotating the adjusting ring, the sealing ring does not need to be replaced immediately, emergency use is facilitated, and the service life of the sealing ring is prolonged. The problem that the current sealing ring needs to be replaced immediately after being damaged, and continuous operation of a system is affected is solved.

Description

A valve seat seal with adjustable sealing performance Technical Field

[0001] This utility model relates to the field of valve seat sealing ring technology, and more specifically, to a valve seat sealing ring with adjustable sealing performance. Background Technology

[0002] Valves are used in pipeline systems to control the flow of fluid or regulate its flow rate. Their sealing performance directly affects the service life and safety of the valve. A valve seat seal is a sealing component used in valves. The valve seat seal is usually installed in the valve body and seals against the valve core in the valve body to achieve a sealing effect.

[0003] Traditional valve seat seals typically use a single elastic material (such as rubber or PTFE) that generates a fixed preload through an interference fit during initial assembly to achieve sealing at the interface. However, uneven preload distribution after localized wear of the seal leads to leakage, requiring immediate shutdown and replacement. Frequent seal replacements increase manual disassembly time and disrupt continuous system operation. Therefore, we propose a valve seat seal with adjustable sealing performance. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a valve seat sealing ring with adjustable sealing performance to solve the technical problem that the current sealing ring needs to be replaced immediately after it is damaged, which affects the continuous operation of the system.

[0005] To solve the above technical problems, the present invention provides the following technical solution: a valve seat sealing ring with adjustable sealing performance, including a valve body, the inner wall of which is provided with axially distributed threaded grooves, a threaded ring is threadedly installed on the inner wall of the valve body, an adjusting ring is fixedly installed inside the threaded ring, a sealing ring is nested on the screw-in surface of the adjusting ring, and elastic fins are evenly distributed circumferentially inside the adjusting ring.

[0006] A fixed seat is fixedly installed at one end of the adjusting ring near the valve body inlet. A sliding seat is slidably connected inside the fixed seat. An adjusting block is provided on the outer side of the sliding seat. An adjusting slot matching the adjusting block is opened on the inner wall of the fixed seat.

[0007] When the threaded ring is rotated, the adjusting ring moves axially and causes the sealing ring to compress or release. When the adjusting block engages with the adjusting groove step by step, sound feedback is generated, and the elastic wing is compressed to produce circumferential linkage bending deformation to compensate for local wear of the sealing ring.

[0008] Preferably, a hexagonal fixing block is fixedly installed on the non-screw-in surface of the adjusting ring.

[0009] Preferably, a trapezoidal cross-section groove is provided at the position corresponding to the sealing ring of the adjusting ring, and the outer surface of the sealing ring is in contact with the inner wall of the valve body.

[0010] Preferably, the elastic wing is disposed inside the trapezoidal cross-section groove and is evenly distributed circumferentially between the sealing ring and the adjusting ring. One end of the elastic wing is fixed to the adjusting ring, and the other end abuts against the sealing ring.

[0011] Preferably, the adjusting block engages step by step with the adjusting slot inside the fixed seat.

[0012] Preferably, the bending direction of the elastic wing is consistent with the compression direction of the sealing ring, and the deformation displacement is transmitted between adjacent elastic wing pieces through a linkage structure.

[0013] Compared with the prior art, this utility model provides a valve seat sealing ring with adjustable sealing performance, which has the following beneficial effects:

[0014] 1. This utility model uses a threaded ring to drive the axial movement of the adjusting ring, combined with the stepped engagement structure of the adjusting block and the adjusting groove, to adjust the compression of the sealing ring. Each adjustment is accompanied by a "click" sound feedback, allowing the operator to intuitively judge the adjustment status. After the sealing ring is damaged, the adjusting ring can be rotated to continue adjusting the compression of the sealing ring without immediate replacement of the sealing ring, which is convenient for emergency use and solves the problem that the current sealing ring needs to be replaced immediately after damage, affecting the continuous operation of the system.

[0015] 2. The elastic winglets of this utility model are evenly distributed circumferentially and transmit deformation displacement through a linkage structure. During the assembly of the sealing ring, the sealing ring is automatically fine-tuned to eliminate local gaps caused by processing errors or installation deviations, ensuring uniform compression of the circumferential seal during initial assembly and avoiding the problem of uneven wear caused by improper assembly of traditional sealing rings. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the appearance structure of this utility model;

[0017] Figure 2 is a schematic diagram of the threaded ring and related structures of this utility model;

[0018] Figure 3 is an exploded structural diagram of this utility model;

[0019] Figure 4 is a schematic cross-sectional view of the present invention.

[0020] Figure 5 is a schematic diagram of the adjustment slot and related structures of this utility model.

[0021] In the diagram: 1. Valve body; 2. Adjusting ring; 3. Hexagonal fixing block; 4. Threaded ring; 5. Elastic wing; 6. Sealing ring; 7. Fixing seat; 71. Adjusting slot; 8. Sliding seat; 81. Adjusting block. Detailed Implementation

[0022] Example: Please refer to Figures 1-5. This utility model provides a technical solution: a valve seat sealing ring with adjustable sealing performance, including a valve body 1, the inner wall of which is provided with axially distributed threaded grooves, a threaded ring 4 is threadedly installed on the inner wall of the valve body 1, an adjusting ring 2 is fixedly installed inside the threaded ring 4, a sealing ring 6 is nested on the screw-in surface of the adjusting ring 2, and elastic winglets 5 are evenly distributed circumferentially inside the adjusting ring 2.

[0023] A fixed seat 7 is fixedly installed at one end of the regulating ring 2 near the inlet of the valve body 1. A sliding seat 8 is slidably connected inside the fixed seat 7. An adjusting block 81 is provided on the outer side of the sliding seat 8. An adjusting groove 71 matching the adjusting block 81 is opened on the inner wall of the fixed seat 7.

[0024] When the threaded ring 4 is rotated, the adjusting ring 2 moves axially and compresses or releases the sealing ring 6. The adjusting block 81 engages with the adjusting groove 71 in stages, generating audible feedback. The elastic wing 5 is also compressed, causing circumferential bending deformation to compensate for localized wear of the sealing ring 6. This invention uses the threaded ring 4 to drive the adjusting ring 2 axially, combined with the stepped engagement structure of the adjusting block 81 and the adjusting groove 71, to adjust the compression of the sealing ring 6. Each adjustment is accompanied by a "click" sound, allowing the operator to visually determine the adjustment status. If the sealing ring 6 is damaged, the adjusting ring 2 can be rotated to continue adjusting the compression without immediate replacement, facilitating emergency use and solving the problem of needing immediate replacement of the damaged sealing ring 6, which affects continuous system operation.

[0025] Furthermore, a hexagonal fixing block 3 is fixedly installed on the non-screw-in surface of the adjusting ring 2. The hexagonal fixing block 3 provides a standard tool interface, which facilitates the adjustment of the sealing performance by rotating the adjusting ring 2 with a wrench.

[0026] Furthermore, a trapezoidal cross-section groove is provided at the corresponding position of the adjusting ring 2 and the sealing ring 6. The outer surface of the sealing ring 6 contacts the inner wall of the valve body 1. The gap design between the inner wall of the trapezoidal cross-section groove and the sealing ring 6 restricts the radial displacement of the sealing ring 6 and prevents the sealing ring 6 from falling off or deviating due to pressure fluctuations.

[0027] Furthermore, the elastic wing 5 is set inside the trapezoidal cross-section groove and is evenly distributed circumferentially between the sealing ring 6 and the adjusting ring 2. One end of the elastic wing 5 is fixed to the adjusting ring 2, and the other end abuts against the sealing ring 6. Adjacent elastic wing 5 transmit deformation displacement through the linkage structure, so that the wear compensation of the sealing ring 6 is more uniform and local stress concentration is avoided.

[0028] Furthermore, the adjusting block 81 engages step by step with the adjusting slot 71 inside the fixed seat 7. The engagement structure of the adjusting block 81 and the adjusting slot 71 enables multi-level adjustment of the compression of the sealing ring 6. Each level of adjustment is accompanied by a "click" sound feedback, allowing the operator to intuitively judge the adjustment status.

[0029] Furthermore, the bending direction of the elastic wing 5 is consistent with the compression direction of the sealing ring 6, and the deformation displacement is transmitted between adjacent elastic wing 5 through a linkage structure.

[0030] In actual operation, when this device is used, the sealing ring 6 is inserted into the trapezoidal groove corresponding to the adjusting ring 2 using a tool, and it is fitted with the elastic wing 5 to complete the initial assembly of the sealing ring 6. The adjusting ring 2 is then placed inside the valve body 1, and a hex wrench is used to align it with the sealing ring 6 and rotate it clockwise so that the threaded ring 4 aligns with the threaded groove inside the valve body 1 and is screwed in. When screwed in, the sealing ring 6 contacts the inner wall of the valve body 1, and at the same time, the sliding seat 8 also contacts the valve body 1. At this time, because the adjusting block 81 is stuck inside the adjusting slot 71, a slight resistance will be felt. Turn the wrench slightly clockwise until you hear a click. The adjusting block 81 will then enter the second adjusting slot 71, completing the installation of the sealing ring 6. At this point, the sealing ring 6 compresses the elastic wing 5, causing it to bend and store energy. To increase or decrease the sealing pressure, simply turn the wrench clockwise or counterclockwise. You can judge whether the adjusting block 81 has entered the adjusting slot 71 by the sound. When the contact surface between the sealing ring 6 and the valve body 1 wears, the asymmetrical deformation triggers the adjacent elastic wing 5 to bend in tandem, pushing the sealing ring 6 to shift towards the worn side and maintaining the continuity of the circumferential seal.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A valve seat sealing ring with adjustable sealing performance, comprising a valve body (1) having axially distributed threaded grooves on its inner wall, characterized in that: The inner wall of the valve body (1) is threaded with a threaded ring (4), and an adjusting ring (2) is fixedly installed inside the threaded ring (4). A sealing ring (6) is nested in the screw surface of the adjusting ring (2). Elastic winglets (5) are evenly distributed circumferentially inside the adjusting ring (2). A fixed seat (7) is fixedly installed at one end of the adjusting ring (2) near the inlet of the valve body (1). A sliding seat (8) is slidably connected inside the fixed seat (7). An adjusting block (81) is provided on the outer side of the sliding seat (8). An adjusting groove (71) matching the adjusting block (81) is opened on the inner wall of the fixed seat (7). When the threaded ring (4) is rotated, the adjusting ring (2) moves axially and drives the sealing ring (6) to compress or release. When the adjusting block (81) and the adjusting groove (71) engage step by step, sound feedback is generated. The elastic winglets (5) are compressed and undergo circumferential linkage bending deformation to compensate for the local wear of the sealing ring (6).

2. The valve seat sealing ring with adjustable sealing performance according to claim 1, characterized in that: The adjustment ring (2) is fixedly mounted with a hexagonal fixing block (3) on its non-screw-in surface.

3. The valve seat sealing ring with adjustable sealing performance according to claim 2, characterized in that: The adjusting ring (2) has a trapezoidal cross-section groove at the corresponding position of the sealing ring (6), and the outer surface of the sealing ring (6) is in contact with the inner wall of the valve body (1).

4. The valve seat sealing ring with adjustable sealing performance according to claim 3, characterized in that: The elastic wing (5) is disposed inside the trapezoidal cross-section groove and is evenly distributed circumferentially between the sealing ring (6) and the adjusting ring (2). One end of the elastic wing (5) is fixed to the adjusting ring (2), and the other end abuts against the sealing ring (6).

5. The valve seat sealing ring with adjustable sealing performance according to claim 4, characterized in that: The adjusting block (81) engages step by step with the adjusting slot (71) inside the fixed base (7).

6. The valve seat sealing ring with adjustable sealing performance according to claim 5, characterized in that: The bending direction of the elastic wing (5) is consistent with the compression direction of the sealing ring (6), and the deformation displacement is transmitted between adjacent elastic wing (5) through a linkage structure.

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