Thermal expansion and cold contraction structure for chimney

Abstract

The utility model provides a thermal expansion and cold contraction structure for a chimney, and belongs to the technical field of chimneys. Comprising a body, a mounting groove is formed in the outer wall of the body, a clamping hole is formed in the inner wall of the mounting groove, a shell is tightly attached to the inner wall of the mounting groove, a rotating rod is rotationally connected to the inner wall of the shell, a torsional spring is arranged on the outer wall of the rotating rod, a connecting belt is wound around the outer wall of the rotating rod, an arc-shaped plate is fixedly connected to the tail end of the mounting groove, and a square groove is formed in the middle of the arc-shaped plate; according to the structure of the body, the corrugated pipe, the shell and the arc-shaped plate, in the using process of the structure, the corrugated pipe is used for counteracting the physical effect of thermal expansion and cold contraction in a chimney pipeline, and when thermal expansion occurs, the corrugated pipe can be prolonged to contain redundant expansion hot air; and the chimney can be shrunk and flattened due to cold contraction, so that the chimney is prevented from generating cracks, the protection effect is realized, and the service life of the chimney pipeline is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of chimney technology, and in particular to a thermal expansion and contraction structure for chimneys. Background Technology

[0002] Chimney ducts can discharge high-heat flue gas, thus preventing the flue gas from harming people indoors, and at the same time, they can facilitate centralized treatment of high-temperature waste gas.

[0003] Although chimney pipes can discharge high-heat exhaust gases, existing chimney pipes do not have a mechanism to counteract the physical effects of thermal expansion and contraction. Therefore, the pipes are prone to cracking during operation, which reduces the service life of existing chimney pipes. Therefore, this application provides a thermal expansion and contraction structure for chimneys to meet the requirements. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a thermal expansion and contraction structure for chimneys to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A chimney thermal expansion and contraction structure includes: a body, an outer wall having an installation groove, an inner wall having a locking hole, an outer shell tightly fitted to the inner wall of the installation groove, a rotating rod rotatably connected to the inner wall of the outer shell, a torsion spring on the outer wall of the rotating rod, a connecting strip wound around the outer wall of the rotating rod, an arc-shaped plate fixedly connected to the end of the installation groove, a square groove having a square groove in the middle of the arc-shaped plate, a crossbar fixedly fitted to the inner wall of the square groove, a retaining spring sleeved on the outer wall of the crossbar, a sliding plate abutting the outer wall of the retaining spring, a locking pin fixedly fitted to the outer wall of the sliding plate, and a corrugated pipe fixedly fitted to the bottom of the outer shell.

[0007] The number of rotating rods is four, and the four rotating rods are divided into two groups, with both groups of rotating rods symmetrically distributed along the top of the bellows.

[0008] The diameter of the card hole is adapted to the diameter of the card pin, and the inner wall of the square groove is slidably connected to the outer wall of the slide plate.

[0009] The outer wall of the arc-shaped plate is slidably connected to the inner wall of the outer shell, and the arc-shaped plate is made of aluminum.

[0010] The connecting strip is made of copper sheet, and the outer wall of the connecting strip is tightly fitted to the inner wall of the mounting groove.

[0011] Both the outer shell and the arc-shaped plate are fixedly connected to the main body by snap-fit ​​pins, and the outer wall of the arc-shaped plate is tightly fitted to the inner wall of the mounting groove.

[0012] Compared with the prior art, this utility model has at least the following beneficial effects:

[0013] 1. In the above scheme, the structure of the main body, corrugated pipe, outer shell, and arc plate allows the corrugated pipe to counteract the physical effects of thermal expansion and contraction in the chimney pipe during use. When thermal expansion occurs, the corrugated pipe can extend to accommodate the excess expansion heat, and when contraction occurs, it will shrink and flatten to ensure that the chimney will not crack, thereby achieving a protective effect and extending the service life of the chimney pipe.

[0014] 2. In the above solution, through the structure of the outer shell, arc plate, square groove, sliding plate, locking pin, mounting groove, rotating rod, torsion spring, and connecting belt, the user can directly adjust the distance between the two outer shells during installation, so that the locking pin is tightly attached to the outer wall of the body and the sliding plate compresses the locking spring, thereby achieving a quick fixing effect. At the same time, the structure can also be applied to bodies of different diameters, thereby improving the user's installation efficiency and the scope of application of the structure. Attached Figure Description

[0015] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0016] Figure 1 A three-dimensional structural diagram of a chimney using a thermal expansion and contraction mechanism;

[0017] Figure 2 A schematic diagram of the outer shell structure of a chimney using a thermal expansion and contraction mechanism.

[0018] Figure 3 A schematic diagram of a groove structure for installing a thermal expansion and contraction structure on a chimney.

[0019] Figure 4 A schematic diagram of a partial cross-sectional structure for a chimney using a thermal expansion and contraction mechanism.

[0020] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.

[0021] [Figure Labels]

[0022] 1. Body; 2. Corrugated pipe; 3. Outer shell; 4. Curved plate; 5. Square groove; 6. Slide plate; 7. Locking pin; 8. Crossbar; 9. Snap ring; 10. Locking hole; 11. Mounting groove; 12. Rotating rod; 13. Torsion spring; 14. Connecting strap.

[0023] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0024] The following is a detailed description of a chimney thermal expansion and contraction structure provided by this utility model, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are listed as best and preferred embodiments; other alternative methods may be used by those skilled in the art. Furthermore, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0025] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0026] like Figure 1 and Figure 2 As shown, an embodiment of this utility model provides a chimney thermal expansion and contraction structure, including: a body 1, an installation groove 11 on the outer wall of the body 1, a locking hole 10 on the inner wall of the installation groove 11, a shell 3 tightly fitted to the inner wall of the installation groove 11, a rotating rod 12 rotatably connected to the inner wall of the shell 3, a torsion spring 13 on the outer wall of the rotating rod 12, a connecting strip 14 wound around the outer wall of the rotating rod 12, an arc-shaped plate 4 fixedly connected to the end of the installation groove 11, a square groove 5 in the middle of the arc-shaped plate 4, a crossbar 8 fixedly fitted to the inner wall of the square groove 5, a retaining spring 9 sleeved on the outer wall of the crossbar 8, and a sliding plate 6 abutting the outer wall of the retaining spring 9. The outer wall of the 6 is fixedly fitted with a locking pin 7, and the bottom of the outer shell 3 is fixedly fitted with a corrugated pipe 2. Through the structure of the main body 1, corrugated pipe 2, outer shell 3, arc plate 4, square groove 5, sliding plate 6, and locking pin 7, the user can adjust the distance between the two outer shells 3 by pulling the handle during use. At the same time, the locking pin 7 and the locking hole 10 are used to fix the structure to the main body 1, thereby achieving the effect of quickly fixing the structure. This ensures that the structure is suitable for use with main bodies 1 of different diameters, thereby improving the application range of the structure and the user's installation efficiency.

[0027] like Figure 1 and Figure 2 As shown, there are four rotating rods 12, which are divided into two groups. Both groups of rotating rods 12 are symmetrically distributed along the top of the bellows 2. With the structure of the two groups of rotating rods 12, when the user pulls the handle, the connecting belt 14 can be used to rotate the rotating rods 12 by pulling force, thereby extending the connecting belt 14. This ensures that the structure can be tightly attached to the body 1 and fix the outer shell 3 and the arc plate 4 to the body 1, thus achieving the effect of being applicable to different sizes of body 1 and improving the application range of the structure.

[0028] like Figure 1 and Figure 2 As shown, the diameter of the card hole 10 is matched with the diameter of the card pin 7, and the inner wall of the square groove 5 is slidably connected to the outer wall of the slide plate 6. Through the structure of the square groove 5 and the slide plate 6, when the user puts the structure on the body 1, the outer shell 3 and the arc plate 4 can be fixed by the movement of the card pin 7, thereby preventing the structure from detaching from the body 1 during operation and improving the stability of the structure.

[0029] like Figure 1 and Figure 2 As shown, the outer wall of the arc plate 4 is slidably connected to the inner wall of the outer shell 3, and the arc plate 4 is made of aluminum. Aluminum is easy to process and has low cost, which makes it easy to process aluminum into a ring and connect it to the body 1. At the same time, it reduces the production cost and maintenance cost of the structure.

[0030] like Figure 4 , 5 As shown, the connecting strip 14 is made of copper sheet, and the outer wall of the connecting strip 14 is tightly fitted to the inner wall of the mounting groove 11. The elastic properties of the rubber material ensure that the distance between the two outer shells 3 can be adjusted when the user pulls the handle, thereby ensuring that the structure can be used for bodies 1 of different diameters, thus improving the application range of the structure. After pulling, the elastic properties of the rubber can also make the two outer shells 3 fit tightly against the inner wall of the mounting groove 11, and the arc plate 4 will fit tightly against the body 1 due to the connecting strip 14, improving the stability of the structure after installation.

[0031] like Figure 4 Figure 5 As shown, both the outer shell 3 and the arc-shaped plate 4 are fixedly connected to the main body 1 by the locking pin 7. The outer wall of the arc-shaped plate 4 is tightly fitted to the inner wall of the mounting groove 11. Through the structure of the arc-shaped plate 4 and the mounting groove 11, the locking pin 7 can be limited by the arc-shaped plate 4, thereby ensuring that the outer shell 3 and the arc-shaped plate 4 can be fixed by the locking pin 7 after the arc-shaped plate 4 is tightly fitted to the main body 1, so as to achieve the effect of quickly fixing the structure and thus improve the installation efficiency of the structure for the user.

[0032] The technical solution provided by this utility model, during operation, involves fitting the structure onto the body 1. Adjusting the distance between the two arc-shaped plates 4 allows the locking pin 7 to fit tightly against the outer wall of the body 1. When the user releases the handle, the elastic properties of the copper sheet cause the locking pin 7 to be compressed, squeezing the sliding plate 6. This causes the sliding plate 6 to compress the retaining spring 9, resulting in the locking pin 7 contracting. The user can adjust the position of the arc-shaped plates 4 until the position of the locking pin 7 coincides with the position of the retaining hole 10. The retaining spring 9 then inserts the locking pin 7 into the retaining hole 10, thus fixing the outer shell 3 and the arc-shaped plates 4. This ensures the structure is suitable for body 1s of different diameters and facilitates user installation, improving installation efficiency. Furthermore, when heat accumulates inside the body 1 after installation, the physical effect of thermal expansion and contraction causes the flue gas to expand, causing the bellows 2 to extend and preventing the body 1 from cracking due to excessive expansion force, thus providing a protective effect.

[0033] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details have been described in detail in the above preferred embodiments; however, those skilled in the art can fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0034] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A thermal expansion and contraction structure for chimneys, characterized in that, include: The main body (1) has an installation groove (11) on its outer wall and a locking hole (10) on its inner wall. The inner wall of the installation groove (11) is tightly fitted with a shell (3). The inner wall of the shell (3) is rotatably connected to a rotating rod (12). The outer wall of the rotating rod (12) is provided with a torsion spring (13). The outer wall of the rotating rod (12) is wrapped with a connecting strip (14). The end of the installation groove (11) is fixedly connected to an arc plate (4). The middle part of the arc plate (4) is provided with a square groove (5). The inner wall of the square groove (5) is fixedly fitted with a crossbar (8). The outer wall of the crossbar (8) is sleeved with a retaining spring (9). The outer wall of the retaining spring (9) abuts against a sliding plate (6). The outer wall of the sliding plate (6) is fixedly fitted with a locking pin (7). The bottom of the shell (3) is fixedly fitted with a corrugated pipe (2).

2. The chimney thermal expansion and contraction structure according to claim 1, characterized in that: The number of rotating rods (12) is four, and the four rotating rods (12) are divided into two groups, and the two groups of rotating rods (12) are symmetrically distributed along the top of the bellows (2).

3. The chimney thermal expansion and contraction structure according to claim 1, characterized in that: The diameter of the card hole (10) is adapted to the diameter of the card pin (7), and the inner wall of the square groove (5) is slidably connected to the outer wall of the slide plate (6).

4. The chimney thermal expansion and contraction structure according to claim 1, characterized in that: The outer wall of the arc plate (4) is slidably connected to the inner wall of the outer shell (3), and the arc plate (4) is made of aluminum.

5. The chimney thermal expansion and contraction structure according to claim 1, characterized in that: The connecting strip (14) is made of copper sheet, and the outer wall of the connecting strip (14) is in close contact with the inner wall of the mounting groove (11).

6. The chimney thermal expansion and contraction structure according to claim 1, characterized in that: The outer shell (3) and the arc plate (4) are both fixedly connected to the body (1) by a snap pin (7), and the outer wall of the arc plate (4) is tightly fitted to the inner wall of the mounting groove (11).

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