Universal exhaust hood with reinforced connection

Abstract

The utility model discloses a universal exhaust hood with reinforced connection, and belongs to the field of exhaust equipment. The universal exhaust hood comprises at least two sections of pipelines, a connecting unit is arranged between two adjacent sections of pipelines, and comprises two connecting housings which are symmetrically arranged; the connecting shaft penetrates through the two connecting housings at the same time, the connecting nuts are located on the outer sides of the connecting housings and lock the connecting housings, the lower end of each connecting housing is provided with a connecting pipe in an extending mode, the connecting pipes are connected with the pipeline in an inserted mode, first connecting holes are formed in the inner walls of the connecting pipes, and second connecting holes are formed in the pipeline. The stud sequentially penetrates through the first connecting hole and the second connecting hole. The second connecting holes are formed in an existing pipeline, meanwhile, the first connecting holes are formed in a matched mode, stable connection of the pipeline and the connecting units is achieved, the installation mode is simple, and connection can be achieved through studs.

Description

Technical Field

[0001] The utility model relates to the field of exhaust equipment, in particular to a universal exhaust hood with reinforced connections. Background Art

[0002] In laboratories or other environments with high air quality requirements, exhaust fans are often used to exhaust air from specific areas. For example, when conducting experiments involving toxic and hazardous gases in a laboratory, an exhaust hood is needed to promptly remove the air inside. The exhaust hood is a piping system with one end connected to the working chamber and the other end connected to the outside world or an air purification system.

[0003] The problems with existing suction hoods are: first, the assembly is complicated, and the excessive number of assembled parts makes the internal structure of the pipe complex, making it difficult to repair once damage or failure occurs; second, if it is fixed directly by glue or screws, the appearance is not only unsightly, but the connection between the two is also unstable and easily disconnected when rotating. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a universal exhaust hood with a reinforced connection.

[0005] The technical solution of the utility model is: a universal exhaust hood with a reinforced connection, comprising: at least two sections of pipes; a connecting unit is provided between two adjacent sections of pipes, the connecting unit comprising:

[0006] Two symmetrically arranged connecting covers;

[0007] A connecting shaft, the connecting shaft passing through the two connecting housings at the same time, and connecting nuts are respectively threadedly provided at both ends of the connecting shaft, and the connecting nuts are located outside the connecting housings and lock the connecting housings;

[0008] A connecting pipe is extended from the lower end of each connecting cover, and the connecting pipe is plugged into the pipe. A first connecting hole is provided on the inner wall of the connecting pipe, and a second connecting hole is provided inside the pipe. The stud passes through the first connecting hole and the second connecting hole in sequence; the second connecting hole is connected along the length direction of the central axis of the pipe, and both ends of the pipe are exposed respectively.

[0009] Furthermore, the second connecting hole is arranged in a C-shape, which facilitates the cutting of pipes of different lengths and enables stable connection.

[0010] Furthermore, a torsion spring is provided on the connecting shaft, and both ends of the torsion spring respectively abut against the two connecting covers, thereby ensuring convenience during rotation.

[0011] Furthermore, a plane bearing is clamped on the outer side of the connecting housing, the interior of the plane bearing passes through the connecting shaft, and the outer side of the plane bearing abuts against the connecting nut, thereby ensuring that the connecting nut can rotate smoothly when rotating, and avoiding friction damage to the connecting housing.

[0012] Furthermore, a docking ring is provided on the inner side of the connecting housing, a sealing groove is provided on the docking ring, and a sealing ring is provided in the sealing groove. The provision of the sealing ring ensures the sealing of the connection between the two connecting housings and prevents leakage of harmful gases.

[0013] Furthermore, a wave-shaped sealing protrusion is provided on the docking ring, and the sealing protrusions of the two connecting housings are interlocked. This not only ensures sealing, but also ensures long-term stability after angle adjustment. When the angle needs to be adjusted, a certain force is applied to offset the sealing protrusions, making angle changes simpler and more stable.

[0014] Furthermore, a connecting bowl is provided at the free end of one of the pipes, the connecting bowl communicating with the exhaust chamber. A connecting ring is provided at the upper end of the connecting bowl, the connecting ring being inserted into the pipe. A third connecting hole is provided within the connecting ring, and the third connecting hole is screwed to the second connecting hole. This ensures a stable connection of the connecting bowl, and the provision of the connecting bowl and the exhaust chamber increases the connection area, facilitating smooth exhaust.

[0015] Furthermore, the connecting bowl is made of plastic, silicone or rubber.

[0016] Furthermore, the connecting ring is located outside the pipe, and a limiting net is hollowed out on the inner wall of the connecting pipe, and the limiting net is set at the same height as the third connecting hole. This ensures the stability of the pipe insertion and can smoothly rotate and position to achieve the connection between the two.

[0017] Furthermore, the connecting cover and the connecting pipe are integrally injection-molded, and the integrated setting can ensure simple and convenient installation.

[0018] Furthermore, at least two first connecting holes are provided and evenly distributed on the inner wall of the connecting pipe; and the second connecting holes are provided in one-to-one correspondence with the first connecting holes, thereby ensuring a stable connection between the two.

[0019] Furthermore, the connecting pipe is arranged on the outside of the pipe, and a limiting boss is provided on the inner wall of the connecting pipe. When the pipe is inserted into the connecting pipe, the end of the pipe abuts against the limiting boss, thereby ensuring timely positioning during installation and timely positioning and connection by rotating the pipe.

[0020] The beneficial technical effects of this utility model are: by providing a second connection hole in the existing pipe, in conjunction with the first connection hole, a stable connection between the pipe and the connection unit is achieved, and the installation method is simple, using stud bolts for connection. When observed from the outside of the universal exhaust hood, there are no obvious connection marks. At the same time, this product has a small number of parts and a simple assembly method, which can effectively improve assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall schematic diagram of a universal exhaust hood with reinforced connections.

[0022] Figure 2 This is a schematic diagram of the upper end of the pipeline.

[0023] Figure 3 is a schematic diagram of the connection unit.

[0024] Figure 4 It is a diagram of connecting the bowl.

[0025] Figure 5 is a cross-sectional view of the connection unit.

[0026] Figure 6 This is an enlarged schematic diagram of the interior of the connecting bowl.

[0027] in:

[0028] 1. Pipeline, 11. Second connection hole,

[0029] 2. Connecting unit, 21. Connecting cover, 22. Connecting shaft, 23. Connecting nut, 24. Connecting pipe, 241. Limiting boss, 25. First connecting hole, 26. Docking ring, 261. Sealing groove, 262. Sealing ring, 263. Sealing protrusion,

[0030] 3. Torsion spring,

[0031] 4. Connecting bowl, 41. Connecting ring, 42. Third connecting hole, 43. Limiting net,

[0032] 5. Plane bearings. DETAILED DESCRIPTION

[0033] In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0034] See attached Figure 1-6The universal exhaust hood with reinforced connection shown includes: at least two sections of pipes 1; a connecting unit 2 is provided between two adjacent sections of pipes 1, and the connecting unit 2 includes:

[0035] Two symmetrically arranged connecting covers 21;

[0036] A connecting shaft 22 passes through the two connecting housings 21 at the same time, and connecting nuts 23 are respectively threadedly provided at both ends of the connecting shaft 22, and the connecting nuts 23 are located outside the connecting housings 21 and lock the connecting housings 21;

[0037] A connecting pipe 24 is extended from the lower end of each connecting cover 21, and the connecting pipe 24 is plugged into the pipe 1. A first connecting hole 25 is provided on the inner wall of the connecting pipe 24, and a second connecting hole 11 is provided inside the pipe 1. The stud passes through the first connecting hole 25 and the second connecting hole 11 in sequence; the second connecting hole 11 is connected along the length direction of the central axis of the pipe 1, and exposes both ends of the pipe 1 respectively.

[0038] Furthermore, the second connecting hole 11 is arranged in a C-shape, which facilitates the cutting of pipes 1 of different lengths and enables stable connection.

[0039] Furthermore, a torsion spring 3 is provided on the connecting shaft 22, and both ends of the torsion spring 3 are respectively pressed against the two connecting housings 21, thereby ensuring the convenience of rotation.

[0040] Furthermore, a plane bearing 5 is clamped on the outer side of the connecting housing 21, the interior of the plane bearing 5 passes through the connecting shaft 22, and the outer side of the plane bearing 5 abuts against the connecting nut 23. This ensures that when the connecting nut 23 is rotated, it can rotate smoothly and avoid friction damage to the connecting housing 21.

[0041] Furthermore, a docking ring 26 is provided on the inner side of the connecting housing 21, a sealing groove 261 is provided on the docking ring 26, and a sealing ring 262 is provided in the sealing groove 261. The provision of the sealing ring 262 ensures the sealing of the connection between the two connecting housings 21 and avoids leakage of harmful gases.

[0042] Furthermore, a wave-shaped sealing protrusion 263 is provided on the docking ring 26, and the sealing protrusions 263 of the two connecting housings 21 are interlocked. This not only ensures a tight seal, but also ensures long-term stability after angle adjustment. When the angle needs to be adjusted, a certain amount of force is applied to offset the sealing protrusions 263, making angle changes simpler and more stable.

[0043] Furthermore, a connecting bowl 4 is provided at the free end of one of the pipes 1. The connecting bowl 4 communicates with the exhaust chamber. A connecting ring 41 is provided at the upper end of the connecting bowl 4. The connecting ring 41 is inserted into the pipe 1. A third connecting hole 42 is provided in the connecting ring 41. The third connecting hole 42 is screwed to the second connecting hole 11. This ensures a stable connection of the connecting bowl 4. At the same time, the provision of the connecting bowl 4 with the exhaust chamber can increase the connection area, facilitating smooth exhaust.

[0044] Furthermore, the connecting bowl 4 is made of plastic, silicone or rubber.

[0045] Furthermore, the connecting ring 41 is located outside the pipe 1, and a limiting net 43 is hollowed out on the inner wall of the connecting pipe 24. The limiting net 43 is set at the same height as the third connecting hole 42. This ensures the stability of the insertion of the pipe 1 and can smoothly rotate and position to achieve the connection between the two.

[0046] Furthermore, the connecting housing 21 and the connecting pipe 24 are integrally injection molded. The integrated arrangement ensures simple and convenient installation.

[0047] Furthermore, at least two first connection holes 25 are provided and evenly distributed on the inner wall of the connection pipe 24, and the second connection holes 11 are provided in a one-to-one correspondence with the first connection holes 25, thereby ensuring a stable connection between the two.

[0048] Furthermore, the connecting pipe 24 is arranged outside the pipe 1, and a limiting boss 241 is provided on the inner wall of the connecting pipe 24. When the pipe 1 is inserted into the connecting pipe 24, the end of the pipe 1 abuts against the limiting boss 241. This ensures that the pipe 1 can be positioned in time during installation, and the pipe 1 can be positioned and connected in time by rotating the pipe 1.

[0049] By providing a second connection hole 11 within the existing pipe 1, in conjunction with the first connection hole 25, a stable connection between the pipe 1 and the connection unit 2 is achieved. Installation is simple, requiring only stud bolts. Observing the hood from the outside, no visible connection marks are visible. Furthermore, this product has fewer components and simple assembly, effectively improving assembly efficiency.

[0050] See attached Figure 1 As shown, this embodiment uses four sections of pipes, which are combined through three connecting units. A connecting bowl is provided at the bottom, which connects to the space to be treated, and the top is connected to the air purification system or the outside world. The multiple connecting units enable free selection of angles, and different angles can be adjusted to adapt to different spatial requirements in different directions in different spaces.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A universal exhaust hood with a reinforced connection, characterized in that: include: At least two sections of pipe (1); A connecting unit (2) is provided between two adjacent pipe sections (1), wherein the connecting unit (2) comprises: Two symmetrically arranged connecting housings (21); A connecting shaft (22), the connecting shaft (22) passes through the two connecting housings (21) at the same time, and connecting nuts (23) are respectively threadedly provided on both ends of the connecting shaft (22), and the connecting nuts (23) are located outside the connecting housings (21) and lock the connecting housings (21); A connecting pipe (24) is extended from the lower end of each connecting cover (21), and the connecting pipe (24) is plugged into the pipeline (1). A first connecting hole (25) is formed on the inner wall of the connecting pipe (24), and a second connecting hole (11) is formed inside the pipeline (1). A stud passes through the first connecting hole (25) and the second connecting hole (11) in sequence. The second connecting hole (11) is connected along the length direction of the central axis of the pipeline (1) and is exposed at both ends of the pipeline (1).

2. The universal exhaust hood with reinforced connection according to claim 1, characterized in that: The second connecting hole (11) is arranged in a C shape.

3. The universal exhaust hood with reinforced connection according to claim 1, characterized in that: A torsion spring (3) is provided on the connecting shaft (22), and two ends of the torsion spring (3) respectively abut against two connecting housings (21).

4. The universal exhaust hood with reinforced connection according to claim 1, characterized in that: A docking ring (26) is provided on the inner side of the connecting housing (21), a sealing groove (261) is provided on the docking ring (26), and a sealing ring (262) is provided in the sealing groove (261).

5. The universal exhaust hood with reinforced connection according to claim 4, characterized in that: A wave-shaped sealing protrusion (263) is provided on the docking ring (26), and the sealing protrusions (263) of the two connecting housings (21) are engaged with each other.

6. The universal exhaust hood with reinforced connection according to claim 1, characterized in that: A connecting bowl (4) is further provided at the free end of one of the pipes (1), the connecting bowl (4) being in communication with the exhaust chamber, a connecting ring (41) being provided at the upper end of the connecting bowl (4), the connecting ring (41) being inserted into and fitted with the pipe (1), a third connecting hole (42) being provided in the connecting ring (41), the third connecting hole (42) being connected to the second connecting hole (11) by means of screws.

7. The universal exhaust hood with reinforced connection according to claim 6, characterized in that: The connecting ring (41) is located outside the pipeline (1), and a limiting net (43) is hollowed out on the inner wall of the connecting pipe (24). The limiting net (43) is arranged at the same height as the third connecting hole (42).

8. The universal exhaust hood with reinforced connection according to claim 1, characterized in that: At least two first connecting holes (25) are provided and are evenly distributed on the inner wall of the connecting pipe (24); and the second connecting holes (11) are provided in a one-to-one correspondence with the first connecting holes (25).

9. The universal exhaust hood with reinforced connection according to claim 8, characterized in that: The connecting pipe (24) is arranged on the outside of the pipeline (1), and a limiting boss (241) is provided on the inner wall of the connecting pipe (24). When the pipeline (1) is inserted into the connecting pipe (24), the end of the pipeline (1) abuts against the limiting boss (241).

10. The universal exhaust hood with reinforced connection according to claim 1, characterized in that: A plane bearing (5) is also clamped on the outer side of the connecting housing (21), the interior of the plane bearing (5) passes through the connecting shaft (22), and the outer side of the plane bearing (5) abuts against the connecting nut (23).

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