Stable stainless steel welded air pipe with high compression resistance

Abstract

The utility model relates to a high compression resistance stable stainless steel welding air pipe, which belongs to the technical field of air pipes and comprises an air pipe, a butt joint pipe is arranged on one side of the air pipe, a bolt is arranged on the air pipe, and a connecting structure and a fixing structure are arranged on one side of the air pipe. The connecting structure comprises a flange connecting pipe fixedly connected with the left side of the air pipe, and an inserting cylinder is fixedly installed on the flange connecting pipe. According to the high-compression-resistance stable stainless steel welded air pipe, through the arrangement of the connecting structure and the fixing structure, the flange connecting pipe and the air pipe are fixedly connected through bolts, and then the butt joint pipe is inserted into the inserting cylinder and connected to one end of the flange connecting pipe in a sleeving mode; and therefore, the outer ring sleeve can be rotated to control the control ring in threaded connection with the interior of the outer ring sleeve to move towards the right side, and then the two fixing plates are extruded towards the opposite sides until the two fixing plates are both inserted into the butt-joint pipe, so that the air pipe can be conveniently and rapidly assembled, and the compression resistance and stability of the air pipe are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of air ducts, in particular to a high-pressure-resistant and stable stainless steel welded air duct. Background Art

[0002] Air ducts are piping systems used for air delivery and distribution. According to the cross-sectional shape, air ducts can be divided into circular ducts, rectangular ducts, oblate ducts and other types. Welded air ducts are widely used in civil and industrial ventilation and air-conditioning systems. In areas that require large air volumes, such as the automotive paint shop process ventilation system, the supply and exhaust gases are characterized by high temperature and corrosiveness. The connection between two air ducts is mostly welding. Since the air volume and pressure inside the air duct are very large, the air duct is prone to vibration during the air guiding process, which makes it easy for cracks to appear at the welding points of the air duct and cause air leakage.

[0003] The Chinese utility model announcement number is CN215371445U, which discloses a high-pressure-resistant and stable stainless steel welded air duct, which realizes the connection of two air ducts by flanges, fixing screws and nuts. However, during the installation of the ventilation duct system, it is necessary to first connect the two air ducts, and then pass multiple fixing screws through the two flanges and tighten the nuts to assemble the two air ducts. The process of connecting the two air ducts with fixing screws and nuts is slightly troublesome, which makes the labor intensity of the staff higher and affects the efficiency of the air duct installation. Therefore, a high-pressure-resistant and stable stainless steel welded air duct is proposed to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a highly pressure-resistant and stable stainless steel welded air duct, which has the advantage of being easy and quick to assemble. It solves the problem that during the installation of the ventilation duct system, it is necessary to first connect two air ducts, then pass multiple fixing screws through two flanges, and tighten the nuts before assembling the two air ducts. The process of connecting the two air ducts with fixing screws and nuts is slightly troublesome, which in turn increases the labor intensity of the staff and affects the efficiency of the air duct installation.

[0005] To achieve the above object, the utility model provides the following technical solutions: a high-pressure-resistant and stable stainless steel welded air duct, comprising an air duct, a butt-jointed pipe is arranged on one side of the air duct, bolts are arranged on the air duct, and a connecting structure and a fixing structure are arranged on one side of the air duct;

[0006] The connection structure includes a flange connecting pipe fixedly connected to the left side of the air duct, a plug-in tube fixedly installed on the flange connecting pipe, a sealing ring for sealing connection fixedly installed on the inner circumferential wall of the plug-in tube, two fixed plates slidably installed inside the plug-in tube, a guide assembly for limiting the moving trajectory of the two fixed plates is arranged inside the plug-in tube, and a control ring for limiting the position of the fixed plate is slidably installed on the outer surface of the plug-in tube.

[0007] Furthermore, the fixing structure includes a limiting component fixedly installed on the outer surface of the plug-in tube and used to limit the sliding trajectory of the control ring. A bearing is fixedly installed on the outer surface of the plug-in tube, and the outer peripheral wall of the bearing is fixedly connected to an outer ring sleeve threadedly connected to the outer surface of the control ring.

[0008] Furthermore, the butt-joint pipe is plugged into one side of the air duct, one end of the bolt passes through the flange connection pipe and the air duct, and a nut is threadedly connected to the outer surface of the bolt.

[0009] Furthermore, the plug-in tube includes an annular tube and two connecting grooves, the two connecting grooves are respectively opened at the top and bottom of the annular tube, the two fixing plates are respectively located inside the two connecting grooves, and the two fixing plates both penetrate into the interior of the docking tube.

[0010] Furthermore, the guide assembly includes two guide rods and two guide grooves, the guide rods are fixedly installed between the front and rear side walls of the inner cavity of the guide grooves, the guide grooves are opened inside the fixed plate, and the outer surfaces of the guide rods are slidably connected to the inner walls of the guide grooves.

[0011] Furthermore, the limiting assembly includes an annular strip and two limiting columns, one end of the two limiting columns are respectively fixedly connected to the inner wall of the annular strip, one end of the two limiting columns are fixedly installed on the outer surface of the plug-in tube, and two limiting grooves are provided on the control ring, and the inner walls of the limiting grooves are slidably connected to the outer surfaces of the limiting columns.

[0012] Furthermore, the outer ring sleeve includes a threaded sleeve and a rectangular bar, the inner circumferential wall of the threaded sleeve is fixedly connected to the outer circumferential wall of the bearing, the rectangular bar is fixedly installed on the outer surface of the threaded sleeve, and the inner wall of the threaded sleeve is threadedly connected to the outer surface of the control ring.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] The high-pressure-resistant and stable stainless steel welded air duct is provided with a connecting structure and a fixing structure, so that the flange connection pipe and the air duct are fixedly connected by bolts, and then the butt-joint pipe is inserted into the inside of the plug-in tube and sleeved on one end of the flange connection pipe, so that the control ring of the threaded connection inside the outer ring sleeve can be controlled to move to the right by rotating the outer ring sleeve, thereby squeezing the two fixing plates to opposite sides until the two fixing plates are inserted into the inside of the butt-joint pipe, thereby facilitating the rapid assembly of the air duct and ensuring the pressure resistance and stability of the air duct, thereby enhancing the practicality of the high-pressure-resistant and stable stainless steel welded air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model Figure 1 A in the enlarged view;

[0017] Figure 3 It is a three-dimensional schematic diagram of the structural flange connection pipe and the plug-in tube of the utility model.

[0018] In the figure: 1, air duct; 2, butt pipe; 3, bolt; 41, flange connecting pipe; 42, plug-in sleeve; 43, sealing ring; 44, fixing plate; 45, guide assembly; 46, control ring; 47, limit assembly; 48, bearing; 49, outer ring sleeve. DETAILED DESCRIPTION

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

[0020] See also Figure 1-3 A high pressure-resistant and stable stainless steel welded air duct in this embodiment includes an air duct 1, a butt-joint pipe 2 is provided on one side of the air duct 1, a bolt 3 is provided on the air duct 1, a connecting structure and a fixing structure are provided on one side of the air duct 1, the butt-joint pipe 2 is plugged into one side of the air duct 1, and a nut is threadedly connected to the outer surface of the bolt 3.

[0021] In the implementation of this example, the connection structure includes a flange connection pipe 41 fixedly connected to the left side of the air duct 1, one end of the bolt 3 passes through the flange connection pipe 41 and the air duct 1, so as to facilitate the fixed connection of the flange connection pipe 41 and the air duct 1, a plug-in tube 42 is fixedly installed on the flange connection pipe 41, and a sealing ring 43 for sealing connection is fixedly installed on the inner peripheral wall of the plug-in tube 42, and two fixing plates 44 are slidably installed inside the plug-in tube 42, and the plug-in tube 42 includes an annular tube and two connecting grooves, which are respectively opened at the top and the bottom of the annular tube, and the two fixing plates 44 are respectively located inside the two connecting grooves, and the two fixing plates 44 are both penetrated into the inside of the butt joint tube 2, so as to facilitate the fixing plates 44 to be inserted into the butt joint tube 2, so as to realize the position fixing of the butt joint tube 2, and a guide assembly 45 for limiting the moving trajectory of the two fixing plates 44 is provided inside the plug-in tube 42 to limit the moving direction of the fixing plates 44, and a control ring 46 for limiting the position of the fixing plates 44 is slidably installed on the outer surface of the plug-in tube 42, so as to facilitate the two fixing plates 44 to be squeezed to the opposite side.

[0022] Among them, the guide assembly 45 includes two guide rods and two guide grooves. The guide rods are fixedly installed between the front and rear side walls of the inner cavity of the guide grooves. The guide grooves are opened inside the fixed plate 44. The outer surface of the guide rods is slidably connected to the inner wall of the guide grooves, thereby limiting the fixed plate 44 to move up and down only on the outer surface of the guide rods.

[0023] By adopting the above technical solution, it is possible to use the fixed structure to move the control ring 46 to squeeze the two fixed plates 44, thereby controlling the two fixed plates 44 to move to the opposite side on the outer surface of the guide rod until the two fixed plates 44 are inserted into the interior of the docking tube 2, and the sealing ring 43 can be used to seal the air duct 1 and the docking tube 2, thereby realizing the rapid assembly of the air duct 1.

[0024] In the implementation of this example, the fixed structure includes a limit assembly 47 fixedly installed on the outer surface of the plug-in tube 42 and used to limit the sliding trajectory of the control ring 46, so as to limit the sliding direction of the control ring 46. The limit assembly 47 includes an annular strip and two limit columns. One end of the two limit columns are respectively fixedly connected to the inner wall of the annular strip, and one end of the two limit columns are fixedly installed on the outer surface of the plug-in tube 42. Two limit grooves are provided on the control ring 46. The inner wall of the limit groove is slidably connected to the outer surface of the limit column, so as to limit the control ring 46 to move left and right only on the outer surface of the limit column. A bearing 48 is fixedly installed on the outer surface of the plug-in tube 42, and the outer peripheral wall of the bearing 48 is fixedly connected to an outer ring sleeve 49 threadedly connected to the outer surface of the control ring 46, so that rotating the outer ring sleeve 49 can control the control ring 46 to move left and right.

[0025] Among them, the outer ring sleeve 49 includes a threaded sleeve and a rectangular bar. The inner circumferential wall of the threaded sleeve is fixedly connected to the outer circumferential wall of the bearing 48. The rectangular bar is fixedly installed on the outer surface of the threaded sleeve. The inner wall of the threaded sleeve is threadedly connected to the outer surface of the control ring 46, which is convenient for rotating the threaded sleeve in the outer ring sleeve 49 to realize the left and right movement of the control ring 46.

[0026] By adopting the above technical solution, the docking tube 2 is inserted into the interior of the plug-in tube 42 and sleeved on one end of the flange connecting tube 41, and the outer ring sleeve 49 supported by the rotating bearing 48 is realized, so that the control ring 46 threadedly connected to the threaded sleeve inside the outer ring sleeve 49 moves to the right on the outer surface of the limit column.

[0027] The working principle of the above embodiment is:

[0028] When using the highly pressure-resistant and stable stainless steel welded air duct, the butt joint pipe 2 is inserted into the interior of the plug-in tube 42 and sleeved on one end of the flange connection pipe 41, and the outer ring sleeve 49 supported by the rotating bearing 48 is made so that the control ring 46 threadedly connected to the threaded sleeve inside the outer ring sleeve 49 moves to the right on the outer surface of the limit column, so that the moving control ring 46 squeezes the two fixed plates 44, thereby controlling the two fixed plates 44 to move to the opposite side on the outer surface of the guide rod until the two fixed plates 44 are inserted into the interior of the butt joint pipe 2, and the sealing ring 43 can be used to seal the air duct 1 and the butt joint pipe 2, thereby realizing the rapid assembly of the air duct 1.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure-resistant and stable stainless steel welded air duct, comprising an air duct (1), Features: A butt joint pipe (2) is provided on one side of the air duct (1), a bolt (3) is provided on the air duct (1), and a connecting structure and a fixing structure are provided on one side of the air duct (1); The connection structure comprises a flange connection pipe (41) fixedly connected to the left side of the air duct (1); a plug-in tube (42) is fixedly mounted on the flange connection pipe (41); a sealing ring (43) for sealing connection is fixedly mounted on the inner peripheral wall of the plug-in tube (42); two fixed plates (44) are slidably mounted inside the plug-in tube (42); a guide assembly (45) for limiting the movement trajectory of the two fixed plates (44) is arranged inside the plug-in tube (42); and a control ring (46) for limiting the position of the fixed plates (44) is slidably mounted on the outer surface of the plug-in tube (42).

2. According to claim 1, a high pressure-resistant and stable stainless steel welded air duct, Features: The fixing structure comprises a limiting assembly (47) fixedly mounted on the outer surface of the plug-in cylinder (42) and used to limit the sliding trajectory of the control ring (46); a bearing (48) is fixedly mounted on the outer surface of the plug-in cylinder (42); and an outer ring sleeve (49) threadedly connected to the outer surface of the control ring (46) is fixedly connected to the outer peripheral wall of the bearing (48).

3. According to claim 1, a high pressure-resistant and stable stainless steel welded air duct, Features: The butt joint pipe (2) is plugged into one side of the air duct (1), one end of the bolt (3) passes through the flange connection pipe (41) and the air duct (1), and a nut is threadedly connected to the outer surface of the bolt (3).

4. According to claim 1, a high pressure-resistant and stable stainless steel welded air duct, Features: The plug-in tube (42) comprises an annular tube and two connecting grooves, the two connecting grooves are respectively opened at the top and the bottom of the annular tube, the two fixing plates (44) are respectively located inside the two connecting grooves, and the two fixing plates (44) both penetrate into the interior of the butt-jointed tube (2).

5. A high pressure-resistant and stable stainless steel welded air duct according to claim 4, Features: The guide assembly (45) comprises two guide rods and two guide grooves. The guide rods are fixedly mounted between front and rear side walls of the inner cavity of the guide grooves. The guide grooves are formed inside the fixing plate (44). The outer surfaces of the guide rods are slidably connected to the inner walls of the guide grooves.

6. A high pressure resistant and stable stainless steel welded air duct according to claim 2, Features: The limiting assembly (47) comprises an annular strip and two limiting columns, one end of the two limiting columns are respectively fixedly connected to the inner wall of the annular strip, one end of the two limiting columns are fixedly mounted on the outer surface of the plug-in tube (42), and two limiting grooves are provided on the control ring (46), the inner walls of the limiting grooves are slidably connected to the outer surfaces of the limiting columns.

7. A high pressure-resistant and stable stainless steel welded air duct according to claim 2, Features: The outer ring sleeve (49) comprises a threaded sleeve and a rectangular strip, the inner peripheral wall of the threaded sleeve is fixedly connected to the outer peripheral wall of the bearing (48), the rectangular strip is fixedly mounted on the outer surface of the threaded sleeve, and the inner wall of the threaded sleeve is threadedly connected to the outer surface of the control ring (46).

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