Modular ventilation cabinet pipeline connecting device

Abstract

The utility model relates to the field of fume hood pipeline connection, and discloses a modular fume hood pipeline connecting device which comprises a modular fume hood body, a plurality of fixing pipes are arranged on the upper surface of the modular fume hood body, outer connecting pipes are movably installed above the fixing pipes, and sealing washers are installed between the fixing pipes and the outer connecting pipes. Fixing convex plates are welded to the positions, close to the butt joint positions, of the outer surfaces of the fixing pipe and the outer connecting pipe, a limiting lantern ring is movably installed on the outer surface of the sealing gasket, a plurality of fixing frames are welded to the outer surface of the limiting lantern ring, and gears are rotationally installed in the fixing frames; the limiting lantern ring is matched with the limiting ring plate to extrude the fixing pipe and the outer connecting pipe, so that the effect of conveniently connecting and fixing the fixing pipe and the outer connecting pipe is achieved, the disassembly and assembly convenience between the fixing pipe and the outer connecting pipe is improved, and the problem that when bolts and flange plates are used for fixing the fixing pipe and the outer connecting pipe, operation is inconvenient is solved.

Description

Technical Field

[0001] The present application relates to the field of duct connection of fume hoods, and particularly to a modular fume hood duct connection device. Background Art

[0002] A modular fume hood is a device used in laboratories or industrial environments to control air flow, remove harmful gases, and provide a safe working space. The modular fume hood consists of multiple independent modules that can be combined and reconfigured as needed. This can adapt to the needs of different scales and functions. Modular fume hoods are mainly used in fields such as chemical experiments, pharmaceutical research, and materials science to ensure that gases and vapors can be effectively removed during experimental operations and to protect the safety of operators.

[0003] The duct connection of a modular fume hood is a key part to ensure the normal operation and effective exhaust of the device. When connecting existing ducts, two ducts are generally fixed through flanges and bolts. However, the connection of bolts and flanges requires precise alignment and tools for installation and tightening. After using for a certain period of time, the bolts fixing the flanges may rust and lock, making the disassembly and assembly of the flanges time-consuming and laborious, increasing the labor intensity during maintenance.

[0004] In view of the above-related technologies, the inventor believes that there are defects in the inconvenient operation when connecting the ducts of existing modular fume hoods. Therefore, a modular fume hood duct connection device is proposed to solve the above problems. Utility Model Content

[0005] In order to solve the problem of inconvenient operation when connecting the ducts of existing modular fume hoods, the present application provides a modular fume hood duct connection device.

[0006] The modular fume hood duct connection device provided by the present application adopts the following technical solutions:

[0007] A modular fume hood duct connection device includes a modular fume hood body. A plurality of fixed ducts are arranged on the upper surface of the modular fume hood body. An outer connection duct is movably installed above the fixed ducts. A sealing gasket is installed at the middle position between the fixed duct and the outer connection duct. Fixed convex plates are welded on the outer surfaces of the fixed duct and the outer connection duct near the butt joint position. A limiting collar is movably installed on the outer surface of the sealing gasket. A plurality of fixed frames are welded on the outer surface of the limiting collar. Gears are rotatably installed inside the fixed frames. Limiting ring plates are movably installed on the outer surfaces of the fixed duct and the outer connection duct near the fixed convex plates. A plurality of rack plates are welded on one side of the outer surface of the limiting ring plate. A fixing component is further provided on the outer surface of the fixed frame for fixing the rotating gears.

[0008] Preferably, the fixing component includes a connecting shaft, the connecting shaft passes through the fixing frame and is welded to the middle of one end of the gear, and several elastic clamping strips are welded to the outer surface of the fixing frame near the connecting shaft, and a movable clamping sleeve is movably installed on the outer surface of the elastic clamping strips.

[0009] Preferably, one end edge of the rack plate extends into the fixing frame, one side edge of the rack plate is movably close to the outer surface of the gear, and the gear and the rack plate are meshed with each other.

[0010] Preferably, the outer diameter of the fixing convex plate is smaller than the inner diameter of the limiting ring plate, one end of the inner wall of the limiting ring plate abuts against the outer surface of the fixing convex plate, and the fixing convex plate and the limiting ring plate are clamped with each other.

[0011] Preferably, the number of the elastic clamping strips is four, the outer surface of the elastic clamping strips is of an inclined surface structure, and one side of the inner wall of the movable clamping sleeve abuts against the outer surface of the elastic clamping strips.

[0012] In summary, the present application includes the following beneficial technical effects:

[0013] By placing the sealing gasket between the fixing pipe and the outer connecting pipe for sealing protection, the limiting ring plate is movably clamped on the outer surface of the fixing convex plate along the outer surfaces of the fixing pipe and the outer connecting pipe, and the rack plate is inserted into the fixing frame to drive the gear to rotate, so that the fixing pipe and the outer connecting pipe are mutually pressed and fixed, and the movable clamping sleeve is pulled to limit and fix the rotated connecting shaft by the elastic clamping strips; compared with the prior art, this solution has the effect of facilitating the mutual connection and fixation between the fixing pipe and the outer connecting pipe, improving the disassembly and assembly convenience between the fixing pipe and the outer connecting pipe, and solving the problem of inconvenient operation when fixing the fixing pipe and the outer connecting pipe with bolts and flange plates. Description of the Drawings

[0014] Figure 1 is the overall structural schematic diagram of the application embodiment;

[0015] Figure 2 is the structural schematic diagram of the limiting sleeve ring in the application embodiment;

[0016] Figure 3 is the internal structural schematic diagram of the fixing frame in the application embodiment;

[0017] Figure 4 is the application embodiment Figure 1 is the partial enlarged structural schematic diagram of A in the middle;

[0018] Description of the reference numerals: 1, modular ventilation cabinet body; 2, fixing pipe; 3, outer connecting pipe; 4, sealing gasket; 5, fixing convex plate; 6, limiting sleeve ring; 7, fixing frame; 8, gear; 9, connecting shaft; 10, limiting ring plate; 11, rack plate; 12, elastic clamping strip; 13, movable clamping sleeve. Detailed implementation mode

[0019] The following will further elaborate on this application in conjunction with the attached Figures 1-4 drawings.

[0020] An embodiment of this application discloses a modular fume hood pipe connection device. Referring to Figures 1-4 , a modular fume hood pipe connection device includes a modular fume hood body 1. A plurality of fixed pipes 2 are arranged on the upper surface of the modular fume hood body 1. An outer connection pipe 3 is movably installed above the fixed pipes 2. A sealing gasket 4 is installed at the middle position between the fixed pipe 2 and the outer connection pipe 3. Fixed convex plates 5 are welded on the outer surfaces of the fixed pipe 2 and the outer connection pipe 3 near the docking position. A limiting collar 6 is movably installed on the outer surface of the sealing gasket 4. A plurality of fixed frames 7 are welded on the outer surface of the limiting collar 6. A gear 8 is rotatably installed inside the fixed frame 7. Limiting ring plates 10 are movably installed on the outer surfaces of the fixed pipe 2 and the outer connection pipe 3 near the fixed convex plates 5. The outer diameter of the fixed convex plate 5 is smaller than the inner diameter of the limiting ring plate 10. One end of the inner wall of the limiting ring plate 10 abuts against the outer surface of the fixed convex plate 5. The fixed convex plate 5 and the limiting ring plate 10 are mutually engaged. A plurality of rack plates 11 are welded on one side of the outer surface of the limiting ring plate 10. One end of the rack plate 11 extends into the fixed frame 7. One side of the rack plate 11 is movably close to the outer surface of the gear 8. The gear 8 and the rack plate 11 are mutually engaged. A fixing component is further provided on the outer surface of the fixed frame 7 for fixing the rotating gear 8.

[0021] By placing the sealing gasket 4 between the fixed pipe 2 and the outer connection pipe 3 for sealing protection, sleeving the limiting ring plates 10 on the outer surfaces of the fixed pipe 2 and the outer connection pipe 3 near the outside of the fixed convex plates 5 respectively, making the limiting ring plates 10 movably snap onto the outer surface of the fixed convex plates 5 along the outer surfaces of the fixed pipe 2 and the outer connection pipe 3, and making the rack plates 11 movably inserted into the fixed frames 7, making the rack plates 11 move along the outer surface of the gear 8 and drive the gear 8 to rotate, thereby making the fixed pipe 2 and the outer connection pipe 3 press against each other and be fixed, and making the sealing gasket 4 seal between the fixed pipe 2 and the outer connection pipe 3, which reflects the sealing connection and fixing effect of the limiting ring plates 10 on the fixed pipe 2 and the outer connection pipe 3.

[0022] Referring to Figure 2 and Figure 4 , the fixing component includes a connecting shaft 9. The connecting shaft 9 passes through the fixed frame 7 and is welded at the middle of one end of the gear 8. A plurality of elastic clamping strips 12 are welded on the outer surface of the fixed frame 7 near the connecting shaft 9. A movable clamping sleeve 13 is movably installed on the outer surface of the elastic clamping strips 12. The number of the elastic clamping strips 12 is four. The outer surface of the elastic clamping strips 12 is of an inclined surface structure. One side of the inner wall of the movable clamping sleeve 13 abuts against the outer surface of the elastic clamping strips 12.

[0023] By synchronously rotating the connecting shaft 9 with the gear 8, the movable ferrule 13 is pulled to move along the outer surface of the elastic strip 12, so that the movable ferrule 13 pushes the elastic strip 12 to move and abut against the outer surface of the connecting shaft 9, thereby limiting and fixing the rotated connecting shaft 9, and enabling the two mutually approaching limiting ring plates 10 to pull and fix the fixed pipe 2 and the outer connecting pipe 3 to each other, reflecting the limiting and fixing effect of the gear 8 and the connecting shaft 9.

[0024] The implementation principle of a modular fume hood pipe connection device in an embodiment of the present application is as follows: By placing the sealing gasket 4 between the fixed pipe 2 and the outer connecting pipe 3 for sealing protection, the limiting ring plates 10 are respectively sleeved on the outer surfaces of the fixed pipe 2 and the outer connecting pipe 3 near the outside of the fixed convex plate 5, so that the limiting ring plates 10 are movably clamped on the outer surface of the fixed convex plate 5 along the outer surfaces of the fixed pipe 2 and the outer connecting pipe 3, and the rack plate 11 is movably inserted into the fixed frame 7, so that the rack plate 11 moves along the outer surface of the gear 8 and drives the gear 8 to rotate, thereby mutually extruding and fixing the fixed pipe 2 and the outer connecting pipe 3, enabling the sealing gasket 4 to seal between the fixed pipe 2 and the outer connecting pipe 3, and at the same time enabling the connecting shaft 9 to rotate synchronously with the gear 8, pulling the movable ferrule 13 to move along the outer surface of the elastic strip 12, so that the movable ferrule 13 pushes the elastic strip 12 to move and abut against the outer surface of the connecting shaft 9, thereby limiting and fixing the rotated connecting shaft 9 and keeping the gear 8 and the connecting shaft 9 stable after a certain angle; compared with the prior art, this solution has the effect of facilitating the mutual connection and fixation between the fixed pipe 2 and the outer connecting pipe 3, improving the disassembly and assembly convenience between the fixed pipe 2 and the outer connecting pipe 3, and solving the problem of inconvenient operation when fixing the fixed pipe 2 and the outer connecting pipe 3 with bolts and flange plates.

[0025] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, and can also be the communication inside two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the described object changes, the relative position relationship may change;

[0026] Second: In the drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0027] Finally: The above description is only the preferred embodiment of the present utility model and is not used to limit the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

[0028] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A modular fume hood pipe connection device, comprising a modular fume hood body (1), wherein a plurality of fixed pipes (2) are arranged on the upper surface of the modular fume hood body (1), characterized in that: An external connecting pipe (3) is movably mounted above the fixed pipe (2), a sealing gasket (4) is mounted at a middle position between the fixed pipe (2) and the external connecting pipe (3), a fixing convex plate (5) is welded to the outer surfaces of the fixed pipe (2) and the external connecting pipe (3) near the butt joint position, a limiting collar (6) is movably mounted on the outer surface of the sealing collar (4), a plurality of fixing frames (7) are welded to the outer surface of the limiting collar (6), a gear (8) is rotatably mounted inside the fixing frame (7), a limiting ring plate (10) is movably mounted on the outer surface of the fixed pipe (2) and the external connecting pipe (3) near the fixing convex plate (5), a plurality of rack plates (11) are welded to one side of the outer surface of the limiting ring plate (10), and a fixing component is also provided on the outer surface of the fixing frame (7) for fixing the rotating gear (8).

2. A modular fume hood pipe connection device according to claim 1, characterized in that: The fixing assembly comprises a connecting shaft (9), the connecting shaft (9) passes through a fixing frame (7) and is welded to the middle of one end of a gear (8), a plurality of elastic clips (12) are welded to the outer surface of the fixing frame (7) near the connecting shaft (9), and a movable clip sleeve (13) is movably mounted on the outer surface of the elastic clip (12).

3. A modular fume hood pipe connection device according to claim 1, characterized in that: One end edge of the rack plate (11) extends into the interior of the fixed frame (7), and one side edge of the rack plate (11) moves close to the outer surface of the gear (8), and the gear (8) and the rack plate (11) are meshed with each other.

4. A modular fume hood pipe connection device according to claim 1, characterized in that: The outer diameter of the fixed convex plate (5) is smaller than the inner diameter of the limiting ring plate (10), one end of the inner wall of the limiting ring plate (10) abuts against the outer surface of the fixed convex plate (5), and the fixed convex plate (5) and the limiting ring plate (10) are engaged with each other.

5. A modular fume hood pipe connection device according to claim 2, characterized in that: The number of the elastic clamping strips (12) is four, the outer surface of the elastic clamping strip (12) is an inclined surface structure, and one side of the inner wall of the movable clamping sleeve (13) and the outer surface of the elastic clamping strip (12) are in contact with each other.

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