Seam sealing structure of stainless steel air pipe

Abstract

The utility model belongs to the technical field of stainless steel air pipes, and particularly relates to a joint sealing structure of a stainless steel air pipe, which comprises a stainless steel air pipe, the opposite ends of the stainless steel air pipe and a connecting pipe are respectively connected with a butt joint disc, and the stainless steel air pipe and the connecting pipe are in butt joint through the two butt joint discs. A sealing ring is mounted between the two butt joint discs; the two sides of the sealing ring are each fixedly connected with a side pipe, the two side pipes extend into the stainless steel air pipe and the connecting pipe respectively, the interiors of the side pipes are fixedly connected with an inner ring in a sleeved mode, and a supporting frame is fixedly installed in the inner ring. According to the technical scheme, the first-stage sealing layer is formed in the corresponding stainless steel air pipe and the connecting pipe through the side pipe, and then the second-stage sealing layer is formed at the joint of the two butt joint discs, so that the sealing performance of the butt joint ends of the stainless steel air pipe and the connecting pipe can be improved through the structure during use.

Description

Technical Field

[0001] The utility model belongs to the technical field of stainless steel air ducts, and particularly relates to a joint sealing structure of a stainless steel air duct. Background Art

[0002] Stainless steel ducts are primarily available in circular and rectangular shapes to meet the needs of various project sites. They are made from various stainless steel types, including SUS304, 316, and 303, which offer excellent corrosion and heat resistance and high strength. Surface finishes are also available, such as 8K mirrored panels and colored stainless steel plates, making them both aesthetically pleasing and easy to clean and maintain.

[0003] Stainless steel ducts are often joined together to meet specific ventilation system layouts and flow requirements. To ensure a tight seal at the joint ends, traditionally, a single sealing ring is used. However, this single sealing method can gradually lose its effectiveness over time due to various factors, such as vibration, temperature fluctuations, corrosion from the media, and aging of the sealing ring itself. Utility Model Content

[0004] The present utility model is intended to provide a joint sealing structure for stainless steel air ducts, designed to address the problem of multiple stainless steel air ducts being docked together to meet the layout and flow requirements of different ventilation systems. To ensure a tight seal at the docking end, traditional methods typically employ a single sealing ring installed at the docking portion. However, this single sealing method can gradually lose its sealing effectiveness over long-term use due to various factors, such as vibration, temperature fluctuations, corrosion from the medium, and aging of the sealing ring itself.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a joint sealing structure for a stainless steel air duct, comprising a stainless steel air duct, wherein the stainless steel air duct and a connecting pipe are respectively connected to a docking plate at opposite ends, the stainless steel air duct and the connecting pipe are docked via two docking plates, and a sealing ring is installed between the two docking plates;

[0006] A side tube is fixedly connected to each side of the sealing ring. The two side tubes extend to the interior of the stainless steel air duct and the connecting tube respectively. An inner ring is fixedly sleeved inside the side tube, and a support frame is fixedly installed inside the inner ring.

[0007] In order to form a secondary sealing layer at the butt ends of the two docking plates, as a preferred joint sealing structure of a stainless steel air duct of the utility model, a notch is provided on one side of the butt joint of the two docking plates, a circle of bayonet is provided on the inner wall of the notch at equal intervals, and a circle of protrusions is installed on the outer walls of both sides of the sealing ring at equal intervals. The thickness of the sealing ring is slightly larger than the thickness between the two notches when they are merged, and each of the protrusions is respectively adapted to a corresponding bayonet.

[0008] In order to form a primary sealing layer inside the stainless steel air duct and the connecting pipe, as a preferred joint sealing structure of the stainless steel air duct of the utility model, three circles of sealing grooves are evenly spaced on the inner wall of one side of the butt end of the stainless steel air duct and the connecting pipe, and three circles of mounting rings are evenly spaced on the outer wall of the side pipe;

[0009] Each mounting ring of the side pipe is respectively sleeved with a sealing ring, and the outer wall of each sealing ring is respectively connected to a circle of sealing grooves. The stainless steel air duct or connecting pipe forms a sealing structure with the corresponding side pipe through the corresponding mounting ring, sealing ring and sealing groove.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] When the stainless steel air duct is docked with the connecting pipe, the side pipes on both sides of the sealing ring are plugged into the corresponding rusty steel air duct and connecting pipe for sealing. Then, the rusty steel air duct is docked with the docking plates on the connecting pipe. After docking, the two docking plates are locked together with bolts, so that the sealing ring will be firmly pressed against the docking part of the two docking plates.

[0012] In summary, this technical solution forms a primary sealing layer inside the corresponding stainless steel air duct and connecting pipe through the side pipe, and then forms a secondary sealing layer at the connection between the two docking plates. Therefore, this structure can improve the sealing performance of the docking end of the stainless steel air duct and the connecting pipe during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the connecting pipe of the present invention;

[0017] Figure 4This is a schematic diagram of the side pipe structure of the present utility model.

[0018] In the figure: 1. Stainless steel air duct; 2. Docking plate; 201. Notch; 202. Bayonet; 3. Connecting pipe; 301. Sealing groove; 4. Sealing ring; 401. Bump; 402. Sealing ring; 5. Side pipe; 501. Mounting ring; 6. Inner ring; 7. Support frame. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-4 The utility model provides the following technical solutions: a joint sealing structure for a stainless steel air duct, comprising a stainless steel air duct 1, wherein the stainless steel air duct 1 and the connecting pipe 3 are respectively connected to a docking plate 2 at one opposite end, the stainless steel air duct 1 and the connecting pipe 3 are docked via the two docking plates 2, and a sealing ring 4 is installed between the two docking plates 2;

[0021] The stainless steel air duct 1 and the connecting pipe 3 in this technical solution have the same inner diameter, and in actual use, both ends of the stainless steel air duct 1 and the connecting pipe 3 can be welded with a docking plate 2 according to actual use requirements;

[0022] A side tube 5 is fixedly connected to both sides of the sealing ring 4. The two side tubes 5 extend to the inside of the stainless steel air duct 1 and the connecting tube 3 respectively. An inner ring 6 is fixedly sleeved inside the side tube 5, and a support frame 7 is fixedly installed inside the inner ring 6.

[0023] The support frame 7 is made of hard deformable rubber. When in use, the inner ring 6 and the support frame 7 will be installed in advance inside the corresponding side tube 5. After the inner ring 6 is installed inside the corresponding stainless steel air duct 1 or connecting tube 3, the inner ring 6 will be kept in a normal open state under the action of the support frame 7. In this way, the inner ring 6 can squeeze the side tube 5 against the inner wall of the corresponding stainless steel air duct 1 or connecting tube 3, thereby forming a primary sealing structure between the sealing ring 402 on the side tube 5 and the corresponding stainless steel air duct 1 or connecting tube 3;

[0024] Preferably: a notch 201 is provided on one side of the two docking plates 2, a circle of bayonet holes 202 are provided on the inner wall of the notch 201 at equal intervals, and a circle of protrusions 401 are installed on the outer walls of both sides of the sealing ring 4 at equal intervals. The thickness of the sealing ring 4 is slightly larger than the thickness between the two notches 201 when combined, and each protrusion 401 corresponds to and fits with a bayonet hole 202.

[0025] During specific use, when the sealing ring 4 is installed between the two docking plates 2, the protrusions 401 on both sides of the sealing ring 4 need to be aligned with the corresponding bayonet 202. In this way, after the two docking plates 2 are docked, the protrusions 401 on the sealing ring 4 will dock with the corresponding bayonet 202, and then the snap-fit structure can enhance the firmness of the sealing ring 4 between the two docking plates 2 during use.

[0026] Preferably: three circles of sealing grooves 301 are opened at equal intervals on the inner wall of one side of the butt end of the stainless steel air duct 1 and the connecting pipe 3, and three circles of mounting rings 501 are opened at equal intervals on the outer wall of the side pipe 5. Each circle of mounting rings 501 of the side pipe 5 is respectively sleeved with a sealing ring 402, and the outer wall of each sealing ring 402 is respectively butted with a circle of sealing grooves 301. The stainless steel air duct 1 or the connecting pipe 3 forms a sealing structure with the corresponding side pipe 5 through the corresponding mounting rings 501, the sealing rings 402 and the sealing grooves 301.

[0027] During specific use, when the stainless steel air duct 1 and the connecting pipe 3 are docked and installed, first, the pre-prepared sealing ring 4 is placed between the two docking plates 2, and the side tubes 5 on both sides of the docking plate 2 are respectively plugged into the inner walls of the stainless steel air duct 1 and the connecting pipe 3, so that the side tubes 5 and the corresponding stainless steel air duct 1 or the interior of the connecting pipe 3 form a primary sealing layer, which can effectively prevent the initial leakage of gas or liquid and provide a layer of protection for the sealing of the entire pipeline.

[0028] Next, the docking plates 2 at the ends of the stainless steel air duct 1 and the connecting pipe 3 are precisely aligned. Once aligned, bolts are inserted through the pre-set holes in the docking plates 2 to securely lock the two plates together. The preload from the bolts not only ensures a secure connection between the plates 2, but also forces the sealing ring 4 firmly against the joint between the two plates 2, forming a second, more robust seal—the secondary seal.

[0029] In summary, this technical solution creates a primary seal within the stainless steel air duct 1 and connecting pipe 3 through the carefully designed side pipe 5, effectively reducing the risk of direct media leakage. Subsequently, at the connection between the two docking plates 2, the bolt locking mechanism and the compressive deformation of the sealing ring 4 further enhance the sealing effect, forming a reliable secondary seal. This dual sealing structure not only significantly improves the sealing performance at the docking end of the stainless steel air duct 1 and connecting pipe 3, but also enhances the stability and durability of the entire piping system.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A joint sealing structure for a stainless steel air duct, comprising a stainless steel air duct (1), wherein the stainless steel air duct (1) and the connecting pipe (3) are respectively connected to a docking plate (2) at one opposite end, and the stainless steel air duct (1) and the connecting pipe (3) are docked via the two docking plates (2), characterized in that: A sealing ring (4) is installed between the two docking plates (2); A side tube (5) is fixedly connected to each side of the sealing ring (4), and the two side tubes (5) extend into the interior of the stainless steel air duct (1) and the connecting tube (3), respectively. An inner ring (6) is fixedly sleeved inside the side tube (5), and a support frame (7) is fixedly installed inside the inner ring (6).

2. The stainless steel air duct joint sealing structure according to claim 1, characterized in that: A notch (201) is provided on one side of the two docking plates (2), and a circle of latches (202) is provided on the inner wall of the notch (201) at equal intervals.

3. The stainless steel air duct joint sealing structure according to claim 1, characterized in that: Three circles of sealing grooves (301) are formed at equal intervals on the inner wall of one side of the butt end of the stainless steel air duct (1) and the connecting pipe (3), and three circles of mounting rings (501) are formed at equal intervals on the outer wall of the side pipe (5).

4. The stainless steel air duct joint sealing structure according to claim 1, characterized in that: A circle of protrusions (401) is installed at equal intervals on the outer walls of both sides of the sealing ring (4).

5. The stainless steel air duct joint sealing structure according to claim 1, characterized in that: The thickness of the sealing ring (4) is slightly greater than the thickness between the two recesses (201) when they are combined, and each protrusion (401) is adapted to correspond to a bayonet (202).

6. The stainless steel air duct joint sealing structure according to claim 1, characterized in that: Each mounting ring (501) of the side tube (5) is respectively sleeved with a sealing ring (402), and the outer wall of each sealing ring (402) is respectively butted against a sealing groove (301). The stainless steel air duct (1) or the connecting tube (3) forms a sealing structure with the corresponding side tube (5) through the corresponding mounting ring (501), the sealing ring (402) and the sealing groove (301).

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