High-strength stainless steel air pipe

Abstract

The utility model discloses a high-strength stainless steel air pipe, belongs to the technical field of exhaust pipe structures, and is used for providing a stainless steel air pipe with higher structural stability, the stainless steel air pipe comprises a pipe body, the pipe body comprises a straight top wall, side walls extending downwards are arranged on the two sides of the top wall, an arc wall is arranged between the bottom sides of the two side walls, and an outer convex groove is formed in the inner wall of the pipe body; ribs are formed in the corresponding positions of the outer side face of the pipe body, the upper surface of the top wall is fixedly connected with an upper rib plate, the outer side face of the arc wall is fixedly connected with an inclined rib plate, the arc wall is a semicircle with an upward opening, and the two side walls are both in a closed ring shape formed by connecting straight outer protruding grooves end to end. The rib structure is formed on the pipe wall of the air pipe through extrusion, and the rib plate structure is welded in the extending direction of the pipe body, so that the air pipe not only has good extrusion resistance, but also has better bending resistance; the pipe wall of the air pipe is designed to be of a flat plate and arc plate combined structure, and the smoothness of the surface of a round pipe and the extrusion and bending resistance of a square pipe are both considered.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of exhaust pipe structures, in particular to a high-strength stainless steel air pipe. BACKGROUND

[0002] The air pipe is an important component of a building ventilation system, and most of the existing air pipes are cylindrical or square, but are prone to extrusion deformation. In the prior art, a circumferential convex structure is pressed on the pipe wall to improve the extrusion resistance, but the pipe is still prone to bending deformation due to pressure, thereby obviously reducing the ventilation section. SUMMARY

[0003] The application aims to provide a stainless steel air pipe with higher structural stability.

[0004] To achieve the above purpose, the application provides a high-strength stainless steel air pipe, which comprises a pipe body, the pipe body comprises a flat top wall, the two sides of the top wall are provided with downwardly extending side walls, the bottom sides of the two side walls are provided with a circular arc wall, the inner wall of the pipe body is provided with an outer convex groove, and a rib is formed at the corresponding position of the outer side surface of the pipe body, the upper surface of the top wall is fixedly connected with an upper rib plate, and the outer side surface of the circular arc wall is fixedly connected with an inclined rib plate, so that the bending resistance of the air pipe can be effectively improved.

[0005] As a preferred option, the circular arc wall is a semicircle with an upward opening, and the two side walls are flat and perpendicular to the top wall, and the curvature of the round pipe and the corner of the square pipe are spaced apart.

[0006] As a preferred option, the outer convex groove and the rib are formed at the same time when the pipe body is extruded, the outer convex groove is connected at the head and tail to form a closed ring, and the rib is also connected at the head and tail to form a closed ring, so that the structural strength of the circumferential wall of the pipe is improved.

[0007] As a preferred option, the plane where the outer convex groove and the rib are located is perpendicular to the extension direction of the pipe body, so that the pipe body is convenient to process and form.

[0008] As a preferred option, the profile shape of the outer convex groove and the rib is the same as the cross-sectional shape of the pipe body, so that the material of the pipe wall has good uniformity.

[0009] As a preferred option, the number of the inclined rib plates is two, the two inclined rib plates are symmetrical about the vertical plane where the axis of the circular arc wall is located, so that the uniformity of the weight distribution of the pipe wall material is ensured.

[0010] As a preferred option, one end of the pipe body is fixedly connected with a connecting disc, an insertion groove is formed between the inner wall of the connecting disc and the end surface of the pipe body, the other end of another pipe body is adapted to be inserted and matched with the insertion groove, so that the pipe bodies are closely matched, conveniently aligned and installed, and quickly disassembled.

[0011] As a preferred, the connecting disc is provided with a through hole penetrating through two end faces, which is used for aligning with the through hole on the air pipe mounting bracket, and then the bolt is passed through to realize connection and fixation, so as to ensure the stability of the air pipe installation.

[0012] Compared with the prior art, the application has the beneficial effects that:

[0013] (1) By extruding the rib structure in the air pipe wall and welding the rib plate structure along the extension direction of the pipe body, the air pipe not only has good extrusion resistance, but also has better bending resistance;

[0014] (2) By designing the pipe wall of the air pipe as a structure combining flat plates and arc plates, the smoothness of the surface of the circular pipe and the extrusion and bending resistance of the square pipe are considered, and the structural strength of the air pipe is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a first schematic diagram of the three-dimensional structure of the high-strength stainless steel air pipe.

[0016] Figure 2 It is a second schematic diagram of the three-dimensional structure of the high-strength stainless steel air pipe.

[0017] Figure 3 It is a first sectional view of the three-dimensional structure of the high-strength stainless steel air pipe.

[0018] Figure 4 It is a second sectional view of the three-dimensional structure of the high-strength stainless steel air pipe. Figure 3 It is a partial enlarged view of A of the high-strength stainless steel air pipe.

[0019] Figure 5 It is a second sectional view of the three-dimensional structure of the high-strength stainless steel air pipe.

[0020] In the figure: 1, pipe body; 101, top wall; 102, side wall; 103, circular arc wall; 104, rib; 105, outer convex groove; 2, connecting disc; 201, connecting through hole; 12, insertion groove; 3, inclined rib plate; 4, upper rib plate. DETAILED DESCRIPTION

[0021] In the following, the application will be further described in combination with specific embodiments, and it should be noted that the embodiments described below or the technical features between the embodiments can be combined in any manner to form new embodiments without conflict.

[0022] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0023] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0024] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0025] like Figures 1-5 The high-strength stainless steel duct shown includes a duct body 1 with a rounded rectangular cross-section. The duct body 1 includes a straight top wall 101. After installation, the top wall 101 is usually in a horizontal direction. The top wall 101 has downwardly extending side walls 102 on both sides. Both side walls 102 smoothly transition to the top wall 101 through rounded corners. The two side walls 102 are also straight and perpendicular to the top wall 101. Therefore, after installation, the side walls 102 are usually in a vertical direction. There is an arc wall 103 between the bottom sides of the two side walls 102. The cross-section of the arc wall 103 is a semi-circle with the opening facing upwards and is tangent to the two side walls 102. Therefore, the inner and outer surfaces of the entire duct body 1 are smooth.

[0026] The inner wall of the tube 1 has an outward protrusion groove 105, and a rib 104 is formed at the corresponding position on the outer side of the tube 1. In fact, the outward protrusion groove 105 and the rib 104 are formed simultaneously by the tube 1 being squeezed from the inside out. The outward protrusion groove 105 is connected end to end to form a closed ring, and the rib 104 is also connected end to end to form a closed ring. The plane where the outward protrusion groove 105 and the rib 104 are located is perpendicular to the extension direction of the tube 1, forming a circumferential reinforcing structure of the tube 1. The outline shape of the outward protrusion groove 105 and the rib 104 is the same as the cross-sectional shape of the tube 1. Since the tube wall of the tube 1 has a certain material thickness, the outer side dimension of the protruding rib 104 will be significantly larger than the dimension of other flat parts of the tube 1.

[0027] The upper surface of the top wall 101 is fixedly connected with an upper rib plate 4, which is obviously higher than the upper surface of the top wall 101 and generally higher than the rib 104, the length direction of the upper rib plate 4 is consistent with the extension direction of the pipe body 1, the outer side of the arc wall 103 is fixedly connected with an inclined rib plate 3, which is also obviously higher than the rib 104, the number of the inclined rib plate 3 is generally two, the two inclined rib plates 3 are symmetric about the vertical plane in which the axis of the arc wall 103 is located, the number of the upper rib plate 4 is not limited, and one or two can be used, if there is only one upper rib plate 4, it needs to be arranged at the central position of the top wall 101, if there are two upper rib plates 4, the two upper rib plates 4 also need to be symmetric about the vertical plane in which the axis of the arc wall 103 is located, so that the weight of the entire stainless steel air pipe is more evenly distributed, and the problem of one side being heavy and the other side being light is less likely to occur, which is safer during transportation and more convenient during installation.

[0028] One end of the pipe body 1 is fixedly connected with a connecting disc 2, the shape of the connecting disc 2 is similar to the cross section of the pipe body 1, the inner wall of the connecting disc 2 and the end surface of the pipe body 1 form a plug-in groove 12 for plug-in cooperation with the other end of another pipe body 1 without the connecting disc 2, the connecting disc 2 is provided with a connecting through hole 201 penetrating through the two end surfaces for aligning with the through hole of the air pipe mounting bracket and then allowing a bolt to pass through, so as to realize connection and fixation.

[0029] Working principle: The stainless steel air pipe not only has the circumferential rib 104 structure capable of resisting extrusion deformation, but also has the rib plate structure along the length direction capable of resisting bending deformation, and has high structural strength and stability; during installation, first, one air pipe is fixed, then the connecting disc 2 is fixedly connected with the air pipe bracket, the end of the pipe body 1 without the connecting disc 2 is placed on the air pipe bracket, then another air pipe is hoisted, the direction of the pipe body 1 is aligned with the previous air pipe, then the end of the pipe body 1 without the connecting disc 2 is inserted into the plug-in groove 12 of the hoisted air pipe, at this time, the connecting disc 2 of the other air pipe is aligned with the idle air pipe bracket, and the bolt is used for further fixation, the above-mentioned installation mode can be used to connect a long air pipe assembly to form an efficient ventilation system.

[0030] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, the above-mentioned embodiments and descriptions in the specification are only the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The protection scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-strength stainless steel air duct, characterized by: The utility model provides a kind of pipe body (1), the pipe body (1) includes flat top wall (101), the both sides of the top wall (101) have downwardly extending side wall (102), between the bottom side of two side wall (102) has circular arc wall (103), the inner wall of the pipe body (1) has outer convex groove (105), rib (104) is formed in the corresponding position of the outer side of the pipe body (1), the upper surface of the top wall (101) is fixedly connected with upper rib plate (4), the outer side of the circular arc wall (103) is fixedly connected with inclined rib plate (3).

2. The high-strength stainless steel air duct according to claim 1, characterized by: The circular arc wall (103) is a semicircle with the opening facing upwards, both side walls (102) are flat and perpendicular to the top wall (101).

3. The high-strength stainless steel air duct according to claim 2, wherein: The outer convex groove (105) and rib (104) are formed by extrusion of the pipe body (1), the outer convex groove (105) forms a closed ring, and the rib (104) also forms a closed ring.

4. The high-strength stainless steel air duct according to claim 3, characterized by: The plane of the outer convex groove (105) and rib (104) is perpendicular to the extension direction of the pipe body (1).

5. The high-strength stainless steel air duct according to claim 4, wherein: The profile of the outer convex groove (105) and rib (104) is the same as the cross-sectional shape of the pipe body (1).

6. The high-strength stainless steel air duct of claim 5, wherein: The number of inclined rib plates (3) is two, and the two inclined rib plates (3) are symmetrical about the vertical plane where the axis of the circular arc wall (103) is located.

7. The high-strength stainless steel air pipe according to any one of claims 1 to 6, characterized by: One end of the pipe body (1) is fixedly connected with a connecting disc (2), and an insertion groove (12) is formed between the inner wall of the connecting disc (2) and the end face of the pipe body (1), suitable for insertion fitting with the other end of another pipe body (1).

8. The high-strength stainless steel air duct according to claim 7, characterized by: The connecting disc (2) is provided with a connecting through hole (201) penetrating through both end faces, for aligning with the through hole on the air pipe mounting bracket and then passing through the bolt to realize connection and fixation.

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