Connecting structure of metal air pipe for air duct ventilation system

Abstract

The utility model discloses a connecting structure of a metal air pipe for an air duct ventilation system, which comprises a main pipeline, the outer wall of the connecting mechanism is clamped with the inner wall of the main pipeline; the bottom of the sealing mechanism is fixedly connected with the top of the connecting mechanism; the inner wall of the auxiliary pipeline is clamped with the outer wall of the connecting mechanism; the connecting mechanism comprises a frame body, the outer wall of the frame body is fixedly connected with a limiting column, the metal air pipe relates to the technical field of metal air pipes, the connecting mechanism is arranged, the pipeline is installed on the limiting column through an installation hole in the pipeline, then the limiting column is wrapped by the fixing plate, the pipeline cannot slide out of the limiting column, and therefore the pipeline can be prevented from sliding out of the limiting column. And a fixing block is fixed to the top of the fixing plate, limiting teeth in the fixing block are meshed with the rack, then the position of the fixing plate is limited, and the purpose of the metal air pipe connecting structure for the air duct ventilation system is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal air ducts, in particular to a connection structure of metal air ducts used in an air duct ventilation system. Background Art

[0002] Metal ducts are metal pipes used in ventilation and air conditioning projects in industrial and civil buildings. They are a kind of municipal infrastructure to allow air circulation and reduce the concentration of harmful gases. When connecting two adjacent metal ducts, angle steels are usually set on the two adjacent ducts, and threaded holes are opened on the angle steels. The two adjacent ducts are fixedly connected by the combination of bolts and nuts. However, since the angle steels cannot be sealed and contacted, there will be gaps, which will affect the sealing of the ducts.

[0003] However, in the prior art, conventional air ducts are usually connected by bolts when docking. Therefore, during the connection process, workers are required to tighten all the bolts on the air ducts to complete the connection of the air ducts. The bolt connection is cumbersome and increases the working time of the workers. In addition, the bolt connection will cause gaps at the pipe interface, thereby affecting the sealing of the pipe. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical solution adopted by the utility model to solve the technical problems is: a connection structure of a metal air duct for an air duct ventilation system, comprising:

[0005] Main pipeline;

[0006] A connecting mechanism, the outer wall of which is clamped with the inner wall of the main pipeline, and the connecting mechanism is used to connect the pipeline;

[0007] A sealing mechanism, the bottom of which is fixedly connected to the top of the connecting mechanism, and the sealing mechanism is used to seal the interface between the pipes;

[0008] A secondary pipeline, the inner wall of which is clamped with the outer wall of the connecting mechanism;

[0009] The connecting mechanism includes a frame, the outer wall of the frame is fixedly connected to a limiting column and is linearly arrayed along the outer wall of the frame, the inner wall of the frame is fixedly connected to a limiting block, the top of the frame is fixedly connected to a rack and is symmetrically arranged on both sides of the top of the frame, the outer wall of the frame is rotatably connected to a fixing plate by a hinge, and the outer wall of the hinge is fixedly connected to the outer wall of the fixing plate, the top of the frame is fixedly connected to a fixing block, the inner wall of the fixing block is slidably connected to a pressure column, the inner wall of the bottom of the fixing block is fixedly connected to a top spring, and the end of the top spring away from the fixed block is fixedly connected to the limiting tooth.

[0010] Preferably, the inner wall at the bottom of the fixed block is fixedly connected to the limiting strip, the bottom of the pressure column contacts the top of the limiting tooth, the inner wall of the limiting tooth is rotatably connected to the inner wall of the fixed block, a sliding groove is provided at the bottom of the limiting tooth, the inner wall of the fixed plate contacts the outer wall of the limiting column, the outer wall of the limiting column is plugged into the inner wall of the main pipe, and the outer wall of the limiting column is plugged into the outer wall of the secondary pipe.

[0011] Preferably, the outer wall of the limit bar contacts the outer wall of the limit tooth, the limit tooth is fixedly connected in the fixed block through a fixed shaft, the inner wall of the fixed block is slidably connected to the outer wall of the rack, the outer wall of the rack is meshed with the outer wall of the limit tooth, the outer wall of the limit block is slidably connected to the inner wall of the main pipe, and the outer wall of the limit block is slidably connected to the inner wall of the secondary pipe.

[0012] Preferably, the sealing mechanism includes an airbag, the outer wall of the airbag is fixedly connected to a fixed frame, the inner walls on both sides of the fixed frame are fixedly connected to air pipes, the inner wall of the airbag is fixedly connected to a connecting pipe, the inner wall of the connecting pipe is fixedly connected to a one-way valve, the inner wall of the connecting pipe is fixedly connected to an air release valve, the top of the connecting pipe is fixedly connected to the bottom of a fixed shell, the inner wall of the fixed shell is slidably connected to a piston rod, the inner wall of the fixed shell is also fixedly connected to a one-way valve, and the outer wall of the piston rod is fixedly connected to a tension spring.

[0013] Preferably, one end of the tension spring away from the piston rod is fixedly connected to the inner wall of the fixed shell, the piston rod includes a sliding column and a piston block, and the sliding column and the piston block are fixedly connected, the outer wall of the connecting tube is fixedly connected to the inner wall of the frame, the inner wall of the frame is fixedly connected to the top of the fixed frame, and the top of the airbag is in contact with the inner wall of the frame.

[0014] Preferably, the outer wall of the airbag contacts the inner wall of the main pipe, the outer wall of the airbag contacts the inner wall of the secondary pipe, four groups of airbags are provided, and each group of airbags is connected by an air pipe, and the outer wall of the air release valve is fixedly connected to the inner wall of the frame.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. The utility model sets a connection mechanism, utilizes the mounting hole on the pipeline to install it on the limiting column, and then wraps the limiting column with a fixing plate, so that the pipeline cannot slide out of the limiting column, thereby fixing the position of the pipeline, and a fixing block is fixed on the top of the fixing plate, and the limiting teeth in the fixing block are engaged with the rack to limit the position of the fixing plate, thereby achieving the purpose of quickly connecting the pipeline and solving the problem that traditional equipment cannot quickly connect the pipeline.

[0017] 2. The utility model sets a sealing mechanism and uses a piston rod to press the air in the fixed shell into the airbag, so that the interior of the airbag is filled with gas, and then expands to fit the pipe interface. A deflation valve is provided on the connecting pipe to quickly release the air in the airbag, thereby achieving the purpose of sealing the pipe interface and solving the problem that traditional equipment cannot seal the pipe interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view of the utility model;

[0019] Figure 2 It is a cross-sectional view of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the connection mechanism of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the fixed plate of the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of the utility model at A;

[0023] Figure 6 It is a structural schematic diagram of the sealing mechanism of the utility model.

[0024] In the figure: 1. main pipeline; 2. auxiliary pipeline; 3. connecting mechanism; 31. limiting column; 32. limiting block; 33. rack; 34. fixing plate; 35. hinge; 36. fixing block; 37. pressure column; 38. top spring; 39. limiting tooth; 310. limiting strip; 311. frame; 4. sealing mechanism; 41. piston rod; 42. fixing shell; 43. tension spring; 44. connecting pipe; 45. one-way valve; 46. air release valve; 47. air bag; 48. fixing frame; 49. trachea. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes. Example

[0026] See also Figure 1 - Figure 6 The utility model provides a technical solution: a connection structure of a metal air duct for an air duct ventilation system, comprising:

[0027] Main pipeline 1;

[0028] A connecting mechanism 3, the outer wall of the connecting mechanism 3 is clamped with the inner wall of the main pipeline 1;

[0029] A sealing mechanism 4, the bottom of the sealing mechanism 4 is fixedly connected to the top of the connecting mechanism 3;

[0030] Auxiliary pipe 2, the inner wall of the auxiliary pipe 2 is clamped with the outer wall of the connecting mechanism 3;

[0031] The connecting mechanism 3 includes a frame 311, the outer wall of the frame 311 is fixedly connected to the limiting column 31, and is linearly arrayed along the outer wall of the frame 311, the inner wall of the frame 311 is fixedly connected to the limiting block 32, the top of the frame 311 is fixedly connected to the rack 33, and is symmetrically arranged on both sides of the top of the frame 311, the outer wall of the frame 311 is rotatably connected to the fixing plate 34 through the hinge 35, and the outer wall of the hinge 35 is fixedly connected to the outer wall of the fixing plate 34, the top of the frame 311 is fixedly connected to the fixing block 36, and the sealing members are fixedly connected to both sides of the frame 311, and the sealing members are clamped between the frame 311 and the pipeline, so as to increase the sealing performance of the pipeline and fix it. The inner wall of the block 36 is slidably connected with a pressure column 37, and the inner wall of the bottom of the fixed block 36 is fixedly connected with a top spring 38. The end of the top spring 38 away from the fixed block 36 is fixedly connected to the limiting tooth 39, and the inner wall of the bottom of the fixed block 36 is fixedly connected to the limiting strip 310. The rotation of the limiting tooth 39 is blocked by the limiting strip 310, so that the limiting tooth 39 can only rotate in one direction. The bottom of the pressure column 37 is fixedly connected to the top of the limiting tooth 39, and the inner wall of the limiting tooth 39 is rotatably connected to the inner wall of the fixed block 36. The inner wall of the fixed plate 34 contacts the outer wall of the limiting column 31, and the outer wall of the limiting column 31 is plugged into the inner wall of the main pipe 1, and the outer wall of the limiting column 31 is plugged into the outer wall of the auxiliary pipe 2.

[0032] The outer wall of the limit strip 310 contacts the outer wall of the limit tooth 39, the inner wall of the fixed block 36 is slidably connected to the outer wall of the rack 33, the outer wall of the rack 33 is meshed with the outer wall of the limit tooth 39, the outer wall of the limit block 32 is slidably connected to the inner wall of the main pipe 1, the outer wall of the limit block 32 is slidably connected to the inner wall of the auxiliary pipe 2, the sealing mechanism 4 includes an airbag 47, the outer wall of the airbag 47 is fixedly connected to a fixed frame 48, the inner walls on both sides of the fixed frame 48 are fixedly connected to the air pipe 49, and the inner wall of the airbag 47 is fixedly connected to the inner wall of the auxiliary pipe 2. Tube 44, the inner wall of the connecting tube 44 is fixedly connected with a one-way valve 45, the one-way valve 45 prevents the air in the connecting tube 44 from returning to the fixed shell 42, the inner wall of the connecting tube 44 is fixedly connected with a relief valve 46, the relief valve 46 extends to the outside of the frame 311, so the air in the connecting tube 44 can be released by simply starting the relief valve 46, the top of the connecting tube 44 is fixedly connected to the bottom of the fixed shell 42, the inner wall of the fixed shell 42 is slidably connected with a piston rod 41, and the outer wall of the piston rod 41 is fixedly connected with a tension spring 43.

[0033] One end of the tension spring 43 away from the piston rod 41 is fixedly connected to the inner wall of the fixed shell 42, the outer wall of the connecting tube 44 is fixedly connected to the inner wall of the frame 311, the inner wall of the frame 311 is fixedly connected to the top of the fixed frame 48, the top of the airbag 47 is in contact with the inner wall of the frame 311, the outer wall of the airbag 47 is in contact with the inner wall of the main pipeline 1, and the outer wall of the airbag 47 is in contact with the inner wall of the secondary pipeline 2. The airbag 47 is filled with gas to expand the airbag 47 and then fits against the inner wall of the pipeline, thereby sealing the interface of the pipeline. The outer wall of the air release valve 46 is fixedly connected to the inner wall of the frame 311.

[0034] Working principle:

[0035] When in use, firstly, the main pipeline 1 and the auxiliary pipeline 2 are docked on the connecting mechanism 3, and the limiting column 31 is fixed on the connecting mechanism 3. Therefore, when docking the pipelines, it is only necessary to align the mounting holes on the pipelines with the limiting column 31, and then insert the pipelines into the limiting column 31, and then fix the main pipeline 1 and the auxiliary pipeline 2 through the connecting mechanism 3. After the pipeline connection is completed, the sealing mechanism 4 is started to make the sealing mechanism 4 block the interface between the pipelines.

[0036] When docking the pipes, it is necessary to slide the limit block 32 in the connecting mechanism 3 into the inner wall of the pipe so that the limit block 32 initially limits the pipe. After the limit column 31 is inserted into the mounting hole on the pipe, the fixing plate 34 on the hinge 35 is rotated to wrap the limit column 31 with the fixing plate 34 so that the pipe cannot slide out of the limit column 31. During the rotation of the fixing plate 34, the fixing block 36 on the top of the fixing plate 34 moves synchronously. A rack 33 is provided on the frame 311. Therefore, during the movement of the fixing block 36, the rack 33 will penetrate into the fixing block 36 and engage with the limit tooth 39 in the fixing block 36. Under the cooperation of the limit tooth 39 and the rack 33, the fixing plate 34 can only move in one direction. When the fixing plate 34 moves in the opposite direction, the limit tooth 39 will be blocked by the limit bar 310, so that the limit tooth 39 cannot rotate, thereby jamming the fixing block 36, thereby limiting the position of the fixing plate 34.

[0037] When it is necessary to release the fixation between the fixing block 36 and the rack 33, it is only necessary to push the pressure column 37 downward, so that the pressure column 37 drives the limiting tooth 39 to move downward synchronously, and simultaneously compresses the top spring 38 at the bottom of the limiting tooth 39, so that the top spring 38 accumulates elastic potential energy. A sliding groove is provided at the bottom of the rack 33, so when the limiting tooth 39 slides downward into the sliding groove, the engagement of the limiting tooth 39 with the rack 33 can be released. At this time, the fixing block 36 can be rotated in the opposite direction to make the fixing plate 34 slide off the rack 33. After the fixing block 36 slides out, the thrust on the pressure column 37 can be released. After the lack of thrust, the top spring 38 releases the accumulated elastic potential energy, thereby pushing the limiting tooth 39 to move upward, thereby resetting the limiting tooth 39 for the next use.

[0038] After the connecting mechanism 3 fixes the pipeline, the sealing mechanism 4 is started to seal the gap at the pipeline interface. A tension spring 43 is fixed in the fixed shell 42. Therefore, under the pull of the tension spring 43, the piston rod 41 slides away from the connecting pipe 44. Then, the piston rod 41 is manually pulled to compress the air in the fixed shell 42 into the connecting pipe 44. The bottom of the connecting pipe 44 is fixed in the air bag 47. Therefore, the air in the connecting pipe 44 enters the air bag 47 under the push of subsequent air. A one-way valve 45 is fixed on the top of the connecting pipe 44 to prevent the air in the connecting pipe 44 from returning to the fixed shell 42. A one-way valve 45 is also fixed on the back of the fixed shell 42. After the air in the fixed shell 42 is pressed into the airbag 47, the outside air is replenished into the fixed shell 42 in one direction through the one-way valve 45. Four groups of airbags 47 are provided in the sealing mechanism 4, and the airbags 47 are connected by air pipes 49. Therefore, after the piston rod 41 continuously presses the air, the air in the airbag 47 is replenished and then expands. The enlarged airbag 47 moves toward the inner wall of the pipe under the restriction of the fixed frame 48, and then fits on the inner wall of the pipe to seal the interface of the pipe. When it is necessary to release the seal of the pipe, it is only necessary to release the air in the connecting pipe 44 to the outside through the air release valve 46 to shrink the airbag 47 and release the seal of the pipe.

[0039] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A connection structure of a metal air duct for an air duct ventilation system, comprising: Main pipeline (1); A connecting mechanism (3), wherein the outer wall of the connecting mechanism (3) is clamped with the inner wall of the main pipeline (1); A sealing mechanism (4), wherein the bottom of the sealing mechanism (4) is fixedly connected to the top of the connecting mechanism (3); A secondary pipeline (2), the inner wall of the secondary pipeline (2) being snap-fitted to the outer wall of the connecting mechanism (3); Features: The connection mechanism (3) comprises a frame (311), the outer wall of the frame (311) is fixedly connected to a limiting column (31) and is linearly arrayed along the outer wall of the frame (311), the inner wall of the frame (311) is fixedly connected to a limiting block (32), the top of the frame (311) is fixedly connected to a rack (33) and is symmetrically arranged on both sides of the top of the frame (311), the outer wall of the frame (311) is rotatably connected to a fixing plate (34) via a hinge (35), and the outer wall of the hinge (35) is fixedly connected to the outer wall of the fixing plate (34), the top of the frame (311) is fixedly connected to a fixing block (36), the inner wall of the fixing block (36) is slidably connected to a pressure column (37), the inner wall of the bottom of the fixing block (36) is fixedly connected to a top spring (38), and one end of the top spring (38) away from the fixing block (36) is fixedly connected to a limiting tooth (39).

2. The connection structure of a metal air duct for an air duct ventilation system according to claim 1, characterized in that: The inner wall at the bottom of the fixed block (36) is fixedly connected to the limiting strip (310), the bottom of the pressure column (37) contacts the top of the limiting tooth (39), the inner wall of the limiting tooth (39) is rotatably connected to the inner wall of the fixed block (36), the inner wall of the fixed plate (34) contacts the outer wall of the limiting column (31), the outer wall of the limiting column (31) is plugged into the inner wall of the main pipe (1), and the outer wall of the limiting column (31) is plugged into the outer wall of the auxiliary pipe (2).

3. The connection structure of a metal air duct for an air duct ventilation system according to claim 2, characterized in that: The outer wall of the limit strip (310) contacts the outer wall of the limit tooth (39), the inner wall of the fixed block (36) is slidably connected to the outer wall of the rack (33), the outer wall of the rack (33) is meshed with the outer wall of the limit tooth (39), the outer wall of the limit block (32) is slidably connected to the inner wall of the main pipe (1), and the outer wall of the limit block (32) is slidably connected to the inner wall of the auxiliary pipe (2).

4. The connection structure of a metal air duct for an air duct ventilation system according to claim 1, characterized in that: The sealing mechanism (4) comprises an airbag (47), the outer wall of the airbag (47) is fixedly connected to a fixing frame (48), the inner walls on both sides of the fixing frame (48) are fixedly connected to air pipes (49), the inner wall of the airbag (47) is fixedly connected to a connecting pipe (44), the inner wall of the connecting pipe (44) is fixedly connected to a one-way valve (45), the inner wall of the connecting pipe (44) is fixedly connected to an air release valve (46), the top of the connecting pipe (44) is fixedly connected to the bottom of a fixing shell (42), the inner wall of the fixing shell (42) is slidably connected to a piston rod (41), and the outer wall of the piston rod (41) is fixedly connected to a tension spring (43).

5. The connection structure of a metal air duct for an air duct ventilation system according to claim 4, characterized in that: One end of the tension spring (43) away from the piston rod (41) is fixedly connected to the inner wall of the fixed shell (42), the outer wall of the connecting pipe (44) is fixedly connected to the inner wall of the frame (311), the inner wall of the frame (311) is fixedly connected to the top of the fixed frame (48), and the top of the airbag (47) is in contact with the inner wall of the frame (311).

6. The connection structure of a metal air duct for an air duct ventilation system according to claim 4, characterized in that: The outer wall of the airbag (47) contacts the inner wall of the main pipe (1), the outer wall of the airbag (47) contacts the inner wall of the secondary pipe (2), and the outer wall of the air release valve (46) is fixedly connected to the inner wall of the frame (311).

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