Connecting flange for common-plate flange air pipe

Abstract

The utility model discloses a connecting flange for a common-plate flange air pipe, and relates to the technical field of common-plate flange air pipes, the connecting flange comprises a pipeline I and shells arranged at equal intervals, a pipeline II is arranged at the joint of the bottom surface of the pipeline I, and sliding grooves arranged at equal intervals are formed in the inner walls of the pipeline I and the pipeline II; the inner wall of each sliding groove is slidably connected with a sliding block, a sealing barrel is arranged in the first pipeline, by arranging the sliding blocks, the sealing barrels, fixing strips, first bolts, flange corners and other components, the first pipeline drives the sliding grooves and the sliding blocks to slide relatively, at the moment, a second moving pipeline drives the corresponding sliding grooves and the corresponding sliding blocks to slide relatively, and the sealing barrel is arranged in the second pipeline. At the moment, the sealing cylinder is in contact with the inner walls of the first pipeline and the second pipeline, the flange corners are fixed to the surfaces of the fixing strips through the first bolts, the two flange corners are connected through the second bolts, then the effect that the sealing performance between the first pipeline and the second pipeline is enhanced by placing the sealing cylinder is achieved, and air leakage at the joint is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of common plate flange air ducts, in particular to a connecting flange used for common plate flange air ducts. Background Art

[0002] When the connecting flange on the common plate flange duct is made, the standard straight pipe is directly pressed into a one-piece flange on the assembly line. The flanges are connected with flange clamps, which are made of galvanized steel plates. After being formed by a flange clamp forming machine, they are cut into uniform sizes for installation and connection. Since the TDF common plate flange is connected to the pipe steel plate as a whole, there is no need to punch and rivet like the angle steel flange. A special flange clamp is used to connect the two sections of the pipe, and the four corners are connected with bolts after adding 90-degree flange angles.

[0003] After searching, a Chinese patent with publication number CN217382069U discloses a connecting flange for common plate flange air ducts, and its technical key points are: it includes an air duct, a pair of guide columns are welded symmetrically at one end of the air duct, and a guide hole is opened symmetrically at the other end of the air duct, and the two adjacent air ducts are connected end to end in sequence, and four fixing screws are inserted through the connection of the two air ducts, and the four fixing screws are symmetrically distributed at the four end corners of the air duct. A fixing nut is sleeved on one end of the fixing screw, and cylinders are symmetrically welded at both ends of the fixing screw. The beneficial effect of the utility model is that when the air ducts need to be connected, the guide column on one air duct is plugged into the guide hole on the other air duct, so that the two air ducts can be connected stably, and then the limit plate is clamped at the connection of the two air ducts, and then the fixing mechanism is rotated to make the fixed tooth plate in the fixing mechanism clamped with the clamping groove of the limit plate, and at the same time, the fan-shaped block in the fixing mechanism is clamped with the cylinder.

[0004] The above scheme solves the problem that when the common plate flange air duct is docked and fixed, it is necessary to use professional tools to fix it, which not only increases the processing cost and installation cost, but also the installation efficiency is not very high; and after long-term use or multiple disassembly and installation, the connecting flange of the existing common plate flange air duct is prone to wear or damage, but because it is one-piece molded, when the common plate flange air duct or the connecting flange is damaged, it needs to be replaced as a whole, which greatly increases the maintenance cost. However, in the existing common plate flange air duct and the above scheme, air leakage is prone to occur at the connection, and the sealing effect is not good, resulting in reduced working efficiency of the common plate flange air duct after installation, and the connection strength is not high, which is prone to damage.

[0005] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0006] In view of the above background technology, the prior art has the disadvantages of air leakage at the connection points and poor sealing effect.

[0007] The utility model discloses a connecting flange for a common plate flange air duct, comprising a pipe 1 and a shell arranged at equal distances, a pipe 2 is provided at the joint of the bottom surface of the pipe 1, the inner walls of the pipe 1 and the pipe 2 are provided with sliding grooves arranged at equal distances, the inner wall of each sliding groove is slidably connected with a sliding block, a sealing cylinder is provided inside the pipe 1, the outer surface of each sliding block is fixedly connected to the outer surface of the sealing cylinder, the outer surfaces of the pipe 1 and the pipe 2 are fixedly connected with fixing strips arranged at equal distances, the interior of each fixing strip is threadedly connected with a bolt 1, and flange angles arranged at equal distances and bolts arranged at equal distances are provided above and below one of the fixing strips, the outer surface of each flange angle is slidably connected to the outer surface of the corresponding fixing strip, the interior of each flange angle is threadedly connected to the outer surface of the corresponding bolt 1, and the interior of each flange angle is threadedly connected to the outer surface of the corresponding bolt 2.

[0008] Furthermore, the upper surface of each fixing bar is provided with threaded holes arranged at equal distances, a side of each fixing bar away from each other is fixedly connected to a limit bar, and the inner wall of each shell is in contact with the outer surface of the corresponding limit bar.

[0009] Furthermore, the inner wall of each shell is rotatably connected with a screw rod, the outer surface of each screw rod is threadedly connected with the inner wall of the corresponding threaded hole, and the outer surface of each screw rod is fixedly connected with a gear rod.

[0010] Furthermore, a circular groove is formed on one side of each shell body away from each other, and a toothed belt is slidably connected to the inner wall of each circular groove.

[0011] Furthermore, the inner wall of each toothed belt is meshed with the outer surface of the corresponding gear, and one side of each toothed belt that is away from each other is fixedly connected to two fixing members.

[0012] Furthermore, a sealing ring is sleeved on the inner wall of each annular groove, and an outer surface of each fixing member is sleeved on the inner wall of the sealing ring.

[0013] Furthermore, one of the shells is provided with a fixing pin 1 and a fixing pin 2 arranged at an equal distance above and below, and one end of each of the fixing pin 1 and the fixing pin 2 that are away from each other is fixedly connected to a side of the corresponding shell that is close to each other, and the outer surface of each of the fixing pin 1 and the fixing pin 2 is slidably connected to the interior of the relative shell.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model sets components such as a sliding block, a sealing cylinder, a fixing strip, a bolt 1, and a flange angle. The movable rod pipe 1 drives the sliding groove and the sliding block to slide relative to each other. At this time, the movable pipe 2 drives the corresponding sliding groove and the corresponding sliding block to slide relative to each other. At this time, the sealing cylinder contacts the inner walls of the pipes 1 and 2. The flange angle is fixed to the surface of the fixing strip by the bolt 1, and the two flange angles are connected by the bolt 2, thereby achieving the effect of enhancing the sealing between the pipes 1 and 2 by placing the sealing cylinder, thereby preventing air leakage at the connection.

[0016] 2. The utility model sets limit strips, screws, gears, toothed belts and other components, and the mobile fixing part drives the toothed belt to move inside the annular groove. At this time, the toothed belt is engaged with the gear to drive the gear to rotate, and the gear drives the screw to rotate. The screw engages with the corresponding threaded hole to drive the shell to move relatively. At this time, the shell is limited by the limit strip, and the shell drives the corresponding fixing pins 1 and 2 to slide with the inside of the shell to achieve secondary limiting between the shells, thereby achieving the effect of enhancing the connection strength between the fixing strips through the connection between the shell and the limit strip, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of pipeline 1 and pipeline 2 of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection relationship between the flange angle and the fixing strip of the utility model;

[0021] Figure 4 It is a schematic diagram of the internal structure of the shell of the utility model.

[0022] In the figure: 1. Pipe 1; 2. Pipe 2; 3. Sliding groove; 4. Sliding block; 5. Sealing cylinder; 6. Fixing strip; 7. Bolt 1; 8. Flange angle; 9. Bolt 2; 10. Threaded hole; 11. Limiting strip; 12. Housing; 13. Screw; 14. Gear; 15. Annular groove; 16. Toothed belt; 17. Fixing piece; 18. Sealing ring; 19. Fixing pin 1; 20. Fixing pin 2. DETAILED DESCRIPTION

[0023] The following will disclose multiple embodiments of the present invention with diagrams. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these physical details are not necessary. In addition, for the purpose of simplifying the diagram, some conventional structures and components will be depicted in a simple schematic manner in the diagram.

[0024] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 The utility model is a connecting flange for a common plate flange air duct, comprising a pipe 1 and a shell 12 arranged at equal distances, a pipe 2 2 is provided at the joint of the bottom surface of the pipe 1, the inner walls of the pipe 1 and the pipe 2 2 are provided with sliding grooves 3 arranged at equal distances, the inner wall of each sliding groove 3 is slidably connected with a sliding block 4, a sealing cylinder 5 is provided inside the pipe 1, the outer surface of each sliding block 4 is fixedly connected to the outer surface of the sealing cylinder 5, the outer surfaces of the pipe 1 and the pipe 2 2 are fixedly connected with fixing strips 6 arranged at equal distances, the interior of each fixing strip 6 is threadedly connected with a bolt 1 7, and flange angles 8 and bolts 2 9 arranged at equal distances are provided above and below one of the fixing strips 6, the outer surface of each flange angle 8 is connected to the corresponding The outer surface of the fixing strip 6 is slidably connected, and the interior of each flange angle 8 is threadedly connected to the outer surface of the corresponding bolt one 7. The interior of each flange angle 8 is threadedly connected to the outer surface of the corresponding bolt two 9. Pipe two 2 is positioned through pipe one 1 and a sliding groove 3 is opened on the inner wall of pipe one 1 and pipe two 2. A sliding block 4 is placed and connected to the sliding groove 3. The sliding groove 3 is used to achieve a limiting effect on the sliding block 4. The sliding block 4 is connected to the sealing tube 5. The sealing effect between pipe one 1 and pipe two 2 is achieved through the sealing tube 5. The fixing strip 6 is placed and the flange angle 8 is installed. The flange angle 8 is fixed to the fixing strip 6 by bolt one 7. The two flange angles 8 are connected by bolt two 9 to achieve the connection between pipe one 1 and pipe two 2.

[0025] See also Figure 3 , each fixing bar 6 is provided with threaded holes 10 arranged at equal distances on the upper surface, and each fixing bar 6 is fixedly connected to a limiting bar 11 on one side away from each other. The inner wall of each shell 12 is in contact with the outer surface of the corresponding limiting bar 11. The threaded holes 10 are provided and the limiting bar 11 is fixed on the surface of the fixing bar 6. The limiting effect of the shell 12 is achieved through the contact between the shell 12 and the limiting bar 11.

[0026] See also Figure 4The inner wall of each shell 12 is rotatably connected with a screw 13, the outer surface of each screw 13 is threadedly connected to the inner wall of the corresponding threaded hole 10, and the outer surface of each screw 13 is fixedly connected with a gear 14. The screw 13 is placed to rotate inside the shell 12, and the screw 13 is connected to the threaded hole 10 to achieve the connection between the shell 12 and the fixing bar 6, and the gear 14 is positioned by the screw 13.

[0027] See also Figure 4 A circular groove 15 is formed on one side of each shell 12 away from each other, and a toothed belt 16 is slidably connected to the inner wall of each circular groove 15. The circular groove 15 is formed and the toothed belt 16 is placed inside the circular groove 15, and the toothed belt 16 is limited by the circular groove 15.

[0028] See also Figure 4 The inner wall of each toothed belt 16 is meshed with the outer surface of the corresponding gear 14, and each toothed belt 16 is fixedly connected to two fixing parts 17 on one side away from each other. The toothed belt 16 is meshed with the gear 14 to achieve the rotation effect of the gear 14, and the fixing parts 17 are installed on the surface of the toothed belt 16 to achieve the movement effect of the toothed belt 16 through the fixing parts 17.

[0029] See also Figure 4 The inner wall of each annular groove 15 is sleeved with a sealing ring 18, and the outer surface of each fixing member 17 is sleeved with the inner wall of the sealing ring 18. The sealing ring 18 is placed inside the annular groove 15 and connected to the fixing member 17. When the fixing member 17 moves, the sealing ring 18 moves inside the annular groove 15 to always seal the annular groove 15.

[0030] See also Figure 4 , a fixing pin 19 and a fixing pin 20 are arranged equidistantly above and below one of the shells 12, and one end of each fixing pin 19 and fixing pin 20 that are far away from each other is fixedly connected to a side of the corresponding shell 12 that is close to each other, and the outer surface of each fixing pin 19 and fixing pin 20 is slidably connected to the inside of the opposite shell 12, and the fixing pin 19 and fixing pin 20 are placed in connection with the shell 12, and the fixing pin 19 and fixing pin 20 are slid with the shell 12, so as to achieve a limiting effect between the two shells 12 and enhance the connection strength.

[0031] When using the utility model: the movable sealing cylinder 5 drives the sliding block 4 to move inside the sliding groove 3. At this time, the pipe 1 and the pipe 2 are in contact, and the surface of the sealing cylinder 5 is in contact with the inner walls of the pipe 1 and the pipe 2, so as to achieve the sealing effect on the pipe 1 and the pipe 2, and prevent air leakage. The flange angle 8 is fixed to the surface of the fixing strip 6 by the bolt 1 7, and the flange angle 8 is connected by the bolt 2 9. At this time, the movable fixing part 17 drives the toothed belt 16 to move inside the annular groove 15, and meshes with the gear 14, driving the gear 14 to rotate, and the gear 14 drives the screw 13 to rotate, and the screw 13 is connected to the threaded hole 10, driving the shell 12 to move relatively, and the shell 12 drives the corresponding fixing pin 19 and the fixing pin 20 to slide with the shell 12, thereby enhancing the connection strength between the pipe 1 and the pipe 2.

[0032] The above is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A connecting flange for a common plate flange air duct, comprising a pipe (1) and shells (12) arranged at equal distances, characterized in that: A pipe (2) is provided at the joint of the bottom surface of the pipe (1). The inner walls of the pipe (1) and the pipe (2) are provided with sliding grooves (3) arranged at equal distances. The inner wall of each sliding groove (3) is slidably connected with a sliding block (4). A sealing cylinder (5) is provided inside the pipe (1). The outer surface of each sliding block (4) is fixedly connected to the outer surface of the sealing cylinder (5). The outer surfaces of the pipe (1) and the pipe (2) are fixedly connected with fixing strips (6) arranged at equal distances. The interior of each fixing strip (6) is threadedly connected with a bolt (7). Flange angles (8) arranged at equal distances and bolts (9) arranged at equal distances are provided above and below one of the fixing strips (6). The outer surface of each flange angle (8) is slidably connected with the outer surface of the corresponding fixing strip (6). The interior of each flange angle (8) is threadedly connected with the outer surface of the corresponding bolt (7). The interior of each flange angle (8) is threadedly connected with the outer surface of the corresponding bolt (9).

2. The connecting flange for the common plate flange air duct according to claim 1, characterized in that: The upper surface of each fixing bar (6) is provided with threaded holes (10) arranged at equal distances, a side of each fixing bar (6) away from each other is fixedly connected to a limiting bar (11), and the inner wall of each shell (12) is in contact with the outer surface of the corresponding limiting bar (11).

3. The connecting flange for the common plate flange air duct according to claim 2, characterized in that: The inner wall of each housing (12) is rotatably connected to a screw rod (13), the outer surface of each screw rod (13) is threadedly connected to the inner wall of the corresponding threaded hole (10), and the outer surface of each screw rod (13) is fixedly connected to a gear (14).

4. The connecting flange for a common plate flange air duct according to claim 1, characterized in that: A circular groove (15) is provided on a side of each shell (12) that is away from each other, and a toothed belt (16) is slidably connected to the inner wall of each circular groove (15).

5. The connecting flange for the common plate flange air duct according to claim 4, characterized in that: The inner wall of each toothed belt (16) meshes with the outer surface of the corresponding gear (14), and each toothed belt (16) is fixedly connected to two fixing members (17) on one side away from each other.

6. The connecting flange for the common plate flange air duct according to claim 5, characterized in that: The inner wall of each annular groove (15) is sleeved with a sealing ring (18), and the outer surface of each fixing member (17) is sleeved with the inner wall of the sealing ring (18).

7. The connecting flange for the common plate flange air duct according to claim 1, characterized in that: A fixing pin 1 (19) and a fixing pin 2 (20) arranged at an equal distance are arranged above and below one of the shells (12); an end of each of the fixing pins 1 (19) and 2 (20) that is away from each other is fixedly connected to a side of the corresponding shell (12) that is close to each other; and an outer surface of each of the fixing pins 1 (19) and 2 (20) is slidably connected to the inside of the corresponding shell (12).

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