Sealing element with self-expansion function

Abstract

The sealing element with the self-expansion function comprises a first rod body, a second rod body and an inner threaded pipe, the end of the first rod body is connected with an extension rod, the surface of the extension rod is connected with a limiting block, the extension rod is inserted into the second rod body, a guide mechanism is arranged between the second rod body and the extension rod, and the inner threaded pipe is connected with the second rod body. A sealing ring is connected into the inner threaded pipe, a rotating ring is installed on the inner wall of the inner threaded pipe, the surface of the extension rod is sleeved with the rotating ring, and the rotating ring is located between the first rod body and the limiting block. According to the sealing device, the second rod body can be driven to move longitudinally through the threaded groove by rotating the internal threaded pipe, and the second rod body can drive the sealing ring to slide when sliding, so that sealing can be performed between the second rod body and the extension rod through the sealing ring, and the circumference of the sealing piece can be adjusted under the condition that the sealing effect is ensured; therefore, the circumference of the sealing element can be matched with the actual use requirement.

Description

Technical Field

[0001] The utility model belongs to the technical field of diesel engine exhaust branch pipe sealing components, in particular to a sealing component with a self-expansion function. Background Art

[0002] This seal is used in the exhaust manifold connection of diesel engines and features wear resistance, high temperature resistance, and excellent sealing. Because the front and rear connecting pipes of diesel engines require a certain degree of expansion and contraction during high-temperature operation, direct tightening with bolts is not an option.

[0003] However, it's worth noting that current seal girth designs are often based on standard specifications or preset parameters for specific application scenarios. This fixed design offers certain advantages in improving production efficiency and controlling costs. However, in practice, due to factors such as equipment or structural diversity, wear, aging, and installation errors, a fixed seal girth may not perfectly match all situations. This mismatch not only affects sealing effectiveness but can also lead to seal damage, leakage, and even equipment failure, reducing its practicality. Utility Model Content

[0004] The purpose of the present utility model is to provide a seal with a self-expanding function, aiming to solve the problem that the circumference design of the seal is often based on standard specifications or preset parameters of specific application scenarios, and the circumference of the seal may not perfectly match all situations. This mismatch not only affects the sealing effect, but may also cause damage to the seal, leakage and even equipment failure, thereby reducing its practicality.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a seal with a self-expanding function, comprising a first rod body, a second rod body and an internally threaded tube, the end of the first rod body being connected to an extension rod, the surface of the extension rod being connected to a limiting block, the extension rod being inserted into the interior of the second rod body, a guide mechanism being provided between the second rod body and the extension rod, a sealing ring being connected to the interior of the internally threaded tube, a rotating ring being installed on the inner wall of the internally threaded tube, the rotating ring being sleeved on the surface of the extension rod, and the rotating ring being located between the first rod body and the limiting block, and a threaded groove being provided on the outer surface of the second rod body.

[0006] As a sealing member with a self-expansion function of the present invention, preferably, the first rod body is slidably connected to the second rod body through the extension rod.

[0007] In order to facilitate sealing between the second rod body and the extension rod, as a seal with self-expansion function of the utility model, preferably, the sealing ring is made of fluororubber material, and the sealing ring is copolymerized by fluorine-containing monomers and has a temperature resistance of up to 300°C.

[0008] As a sealing member with a self-expansion function of the present invention, preferably, the internally threaded tube forms a rotating structure through the rotating ring and the extension rod, and the extension rod and the limit block are an integrated structure.

[0009] In order to facilitate adjustment of the circumference of the sealing member, as a sealing member with a self-expansion function of the utility model, preferably, the internally threaded tube is threadedly connected to the second rod body through the threaded groove.

[0010] As a seal with self-expansion function of the utility model, preferably, the guide mechanism includes a guide slot and a guide slider, the guide slot is provided on the surface of the extension rod, and the inner wall of the second rod near the guide slot is connected to the guide slider.

[0011] In order to limit the movement direction of the second rod body, as a seal with self-expansion function of the utility model, preferably, the guide slider and the guide slot are symmetrically arranged on both sides of the extension rod, and the guide slider is slidably connected to the extension rod through the guide slot.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] When the circumference of the seal needs to be adjusted, the internal threaded tube can be driven to rotate on the surface of the sealing bearing. When the internal threaded tube rotates, the second rod body can be driven to move longitudinally through the threaded groove. When the second rod body moves longitudinally, the guide slider can be driven to slide on the surface of the guide groove. At the same time, when the second rod body slides, the sealing ring can be driven to slide. In this way, the sealing ring can be used to seal between the second rod body and the extension rod, so that the circumference of the seal can be adjusted while ensuring the sealing effect, so that the circumference of the seal can be matched with the actual use needs, thereby improving the practicality of the seal.

[0014] Under high temperature working conditions, the sealing material itself will expand to fill the gap between the inner and outer pipe flanges and achieve sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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:

[0016] Figure 1 This is a schematic diagram of the overall assembly structure of a seal with self-expansion function.

[0017] Figure 2 Schematic diagram of the partial connection structure of a seal with self-expansion function.

[0018] Figure 3 This is a cross-sectional view of the internal threaded pipe connection structure of a seal with self-expansion function.

[0019] Figure 4 This is a cross-sectional view of the second rod connection structure of a sealing element with self-expansion function.

[0020] Figure 5 This is a cross-sectional view of the internal threaded tube structure of a seal with self-expansion function.

[0021] In the figure: 1, first rod; 2, second rod; 3, extension rod; 4, limit block; 5, guide chute;

[0022] 6. Guide slider; 7. Sealing ring; 8. Sealed bearing; 9. Internally threaded pipe; 10. Threaded groove. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-Figure 5 The utility model provides the following technical solutions: a seal with a self-expanding function, comprising a first rod body 1, a second rod body 2 and an internal threaded tube 9, the end of the first rod body 1 is connected to an extension rod 3, the surface of the extension rod 3 is connected to a limiting block 4, the extension rod 3 is inserted into the interior of the second rod body 2, a guide mechanism is provided between the second rod body 2 and the extension rod 3, a sealing ring 7 is connected to the interior of the internal threaded tube 9, a rotating ring 8 is installed on the inner wall of the internal threaded tube 9, the rotating ring 8 is sleeved on the surface of the extension rod 3, and the rotating ring 8 is located between the first rod body 1 and the limiting block 4, and a threaded groove 10 is provided on the outer surface of the second rod body 2.

[0025] Under the limiting action of the guide slider 6 and the guide groove 5, the internally threaded tube 9 can be rotated to drive the second rod 102 to move longitudinally through the threaded groove 10, so that the circumference of the sealing member can be adjusted.

[0026] Preferably: the first rod body 101 is slidingly connected to the second rod body 102 through the extension rod 4, the sealing ring 7 is made of fluororubber, and the sealing ring 7 is made of fluorine-containing monomer copolymerization and has a temperature resistance of up to 300°C. The internal threaded tube 9 forms a rotating structure with the extension rod 3 through the rotating ring 8, the extension rod 3 and the limit block 4 are an integrated structure, and the internal threaded tube 9 is threadedly connected to the second rod body 102 through the threaded groove 10.

[0027] When the second rod 102 drives the sealing ring 7 to slide on the surface of the extension rod 4 , a sealed environment can be formed between the second rod 102 and the extension rod 4 through the sealing ring 7 .

[0028] Preferably: the guide mechanism includes a guide groove 5 and a guide slider 6, the guide groove 5 is opened on the surface of the extension rod 4, the inner wall of the second rod body 102 close to the guide groove 5 is connected with the guide slider 6, the guide slider 6 and the guide groove 5 are symmetrically arranged on both sides of the extension rod 4, and the guide slider 6 forms a sliding connection with the extension rod 4 through the guide groove 5.

[0029] The second rod body 102 can drive the guide slider 6 to slide inside the guide slot 5 , so that the movement direction of the second rod body 102 can be limited.

[0030] In practice, the seal is constructed from high-temperature resistant silicon oxide compounds, using a braiding, gluing, and shaping process to achieve seal assembly requirements while ensuring both heat resistance and sealing performance. Adjusting the core structure allows for the design and production of seals of varying sizes to accommodate a variety of flange groove dimensions. The outer ring of the seal is braided with silicon oxide compounds, while the inner ring can be reinforced with a combination of 1 to N strands. Under high-temperature operating conditions, the seal material expands to fill the gap between the inner and outer pipe flanges, achieving a seal.

[0031] When the circumference of the seal needs to be adjusted, the internal threaded tube 9 can be driven to rotate on the surface of the sealing bearing 8. When the internal threaded tube 9 rotates, the second rod body 102 can be driven to move longitudinally through the threaded groove 10. When the second rod body 102 moves longitudinally, it can drive the guide slider 6 to slide on the surface of the guide groove 5. At the same time, when the second rod body 102 slides, it can drive the sealing ring 7 to slide. In this way, the sealing ring 7 can be used to seal between the second rod body 102 and the extension rod 4, so that the circumference of the seal can be adjusted while ensuring the sealing effect, so that the circumference of the seal can be matched with actual usage needs.

[0032] 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 sealing member with a self-expanding function, comprising a first rod (1), a second rod (2) and an internally threaded tube (9), characterized in that: The end of the first rod body (1) is connected to an extension rod (3), the surface of the extension rod (3) is connected to a limiting block (4), the extension rod (3) is inserted into the interior of the second rod body (2), a guide mechanism is provided between the second rod body (2) and the extension rod (3), the interior of the internal threaded tube (9) is connected to a sealing ring (7), the inner wall of the internal threaded tube (9) is provided with a rotating ring (8), the rotating ring (8) is sleeved on the surface of the extension rod (3), and the rotating ring (8) is located between the first rod body (1) and the limiting block (4), and the outer surface of the second rod body (2) is provided with a threaded groove (10).

2. The self-expanding seal according to claim 1, characterized in that: The first rod body (1) is slidably connected to the second rod body (2) via the extension rod (3).

3. The self-expanding seal according to claim 1, characterized in that: The sealing ring (7) is made of fluororubber, and is copolymerized with fluorine-containing monomers, and has a high temperature resistance of up to 300°C.

4. The self-expanding seal according to claim 3, characterized in that: The internally threaded tube (9) forms a rotating structure with the extension rod (3) through the rotating ring (8), and the extension rod (3) and the limiting block (4) are an integrated structure.

5. The self-expanding seal according to claim 1, characterized in that: The internally threaded tube (9) is threadedly connected to the second rod body (2) via the threaded groove (10).

6. The self-expanding seal according to claim 1, characterized in that: The guide mechanism comprises a guide slot (5) and a guide slider (6); the guide slot (5) is provided on the surface of the extension rod (3); and the inner wall of the second rod body (2) near the guide slot (5) is connected to the guide slider (6).

7. The self-expanding seal according to claim 6, characterized in that: The guide slider (6) and the guide slot (5) are symmetrically arranged on both sides of the extension rod (3), and the guide slider (6) is slidably connected to the extension rod (3) via the guide slot (5).

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