A connection structure of a ventilation duct

Abstract

The utility model relates to the technical field of ventilation pipeline, and disclose a kind of connecting structure of ventilation pipeline, including the flange plate of ventilation pipeline end, two the flange plate between clamping is equipped with sealing ring, two the fixed protrusion is equipped on the lateral wall of the end of mutual approach of ventilation pipeline, two the fixed protrusion is connected by fastening bolt, one the fixed protrusion is equipped with fixed seat, the fixed seat is slidably connected with moving seat, the moving seat is connected with the one end of draw hook, the other end of draw hook is connected with fixed protrusion, the outside of flange plate junction is covered with sealing rubber strip. Two flange plates in the utility model are clamped with sealing ring, the outside of flange plate is covered with sealing rubber strip, the sealing of flange plate junction is carried out by two layers of sealing element, improve the sealing of ventilation pipeline connection, two fixed protrusions are connected by fastening bolt, while setting draw hook, increase the tightness of two ventilation pipeline connection.

Description

Technical Field

[0001] This utility model relates to the field of ventilation duct technology, and in particular to a connection structure for ventilation ducts. Background Technology

[0002] Ventilation ducts are metal or composite pipes used in ventilation and air conditioning systems of industrial and civil buildings. They are a common municipal infrastructure used to circulate air within buildings and reduce the concentration of harmful gases. During building construction, space is typically reserved for the installation of ventilation ducts, allowing the responsible department to arrange and erect them. However, existing ventilation duct connection components often lack proper sealing at the connection points, leading to air leaks during later use. Therefore, a new ventilation duct connection structure is proposed to address these issues. Utility Model Content

[0003] In order to overcome the above-mentioned defects in the prior art, the present invention provides a connection structure for ventilation ducts.

[0004] A connection structure for a ventilation duct includes flange plates at the ends of the ventilation ducts, a sealing ring sandwiched between two flange plates, fixed protrusions on the side walls of the two ventilation ducts at their adjacent ends, the two fixed protrusions being connected by fastening bolts, a fixed seat mounted on one of the fixed protrusions, the fixed seat being slidably connected to a movable seat, one end of the movable seat being connected to a hook, the other end of the hook being engaged with the fixed protrusion, and a sealing strip covering the outer side of the flange plate connection.

[0005] Furthermore, the fixing seat is fixedly mounted on the fixing protrusion by bolts, and the end of the fixing seat is provided with a sliding rod, which passes through the movable seat and connects to the anti-detachment cap.

[0006] Furthermore, the fixed seat and the movable seat are provided with sliding grooves on opposite sides. The two ends of the adjusting seat are slidably connected to the fixed seat and the movable seat through the sliding grooves. Push blocks are provided on both sides of the adjusting seat. The opposite sides of the two push blocks are inclined slopes. A trapezoidal block is provided between the two push blocks. The inclined surfaces on both sides of the trapezoidal block abut against the slopes of the push blocks. The two push blocks are connected by a spring.

[0007] Furthermore, the trapezoidal block is rotatably connected to the bottom of the adjusting screw, and the adjusting screw is threadedly connected to the top of the adjusting seat.

[0008] Furthermore, the hook is threadedly connected to the lifting screw, the bottom of the lifting screw is rotatably connected to the moving seat, the moving seat is provided with a guide rod, and the hook is slidably connected to the guide rod.

[0009] This utility model provides a connection structure for ventilation ducts, which has the following advantages: In this utility model, a sealing ring is sandwiched between two flange plates, and a sealing strip is wrapped around the outside of the flange plates. The connection of the flange plates is sealed by two layers of sealing elements, which improves the sealing performance of the ventilation duct connection. Fixed protrusions are provided on the side walls of the two ventilation ducts that are close to each other. The two fixed protrusions are connected by fastening bolts, and a pull hook is also provided to increase the tightness of the connection between the two ventilation ducts. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the connection structure of a ventilation duct according to the present invention;

[0011] Figure 2 This is a side view of a connection structure for a ventilation duct according to the present invention;

[0012] Figure 3 This utility model Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0013] Figure 4 This utility model Figure 3 Enlarged view of region B in the middle;

[0014] Figure 5 This is a schematic diagram of the installation structure of the fixed base and the movable base in this utility model;

[0015] Figure 6 This is an exploded view of the fixed base and the movable base in this utility model.

[0016] In the diagram: 1. Ventilation duct, 2. Flange plate, 3. Sealing ring, 4. Fixing protrusion, 5. Fastening bolt, 6. Fixed seat, 7. Moving seat, 8. Hook, 9. Sealing strip, 10. Slide rod, 11. Anti-detachment cap, 12. Slide groove, 13. Adjusting seat, 14. Push block, 15. Slope, 16. Trapezoidal block, 17. Spring, 18. Adjusting screw, 19. Lifting screw, 20. Guide rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] like Figure 1-6As shown, a connection structure for a ventilation duct 1 includes a flange plate 2 at the end of the ventilation duct 1, a sealing ring 3 sandwiched between two flange plates 2, a fixing protrusion 4 on the side wall of the two ventilation ducts 1 at their adjacent ends, the two fixing protrusions 4 being connected by fastening bolts 5, a fixing seat 6 being installed on one of the fixing protrusions 4, the fixing seat 6 being slidably connected to a movable seat 7, the movable seat 7 being connected to one end of a hook 8, the other end of the hook 8 being engaged with the fixing protrusion 4, and a sealing strip 9 covering the outer side of the flange plate 2 connection.

[0019] In the above specific technical solution, a sealing ring 3 is sandwiched between the two flange plates 2, and a sealing strip 9 is wrapped around the outside of the flange plate 2. The connection of the flange plate 2 is sealed by the two layers of sealing materials, which improves the sealing performance of the ventilation duct 1 connection. The side walls of the two ventilation ducts 1 that are close to each other are provided with fixing protrusions 4. The two fixing protrusions 4 are connected by fastening bolts 5. At the same time, a pull hook 8 is provided to increase the tightness of the connection between the two ventilation ducts 1.

[0020] The fixed base 6 is fixedly installed on the fixed protrusion 4 by bolts. The end of the fixed base 6 is provided with a sliding rod 10, which passes through the movable base 7 and is connected to the anti-detachment cap 11.

[0021] The fixed seat 6 and the movable seat 7 are provided with sliding grooves 12 on opposite sides. The two ends of the adjusting seat 13 are slidably connected to the fixed seat 6 and the movable seat 7 through the sliding grooves 12. Push blocks 14 are provided on both sides of the adjusting seat 13. The opposite sides of the two push blocks 14 are inclined slopes 15. A trapezoidal block 16 is provided between the two push blocks 14. The inclined surfaces on both sides of the trapezoidal block 16 abut against the slopes 15 of the push blocks 14. The two push blocks 14 are connected by a spring 17.

[0022] The trapezoidal block 16 is rotatably connected to the bottom of the adjusting screw 18, and the adjusting screw 18 is threadedly connected to the top of the adjusting seat 13.

[0023] The hook 8 is threadedly connected to the lifting screw 19. The bottom of the lifting screw 19 is rotatably connected to the movable seat 7. The movable seat 7 is provided with a guide rod 20, and the hook 8 is slidably connected to the guide rod 20.

[0024] In the above specific technical solution, the fixed seat 6 and the movable seat 7 are slidably connected by the slide rod 10. The fixed seat 6 is fixedly installed on the fixed protrusion 4 on one side. Pushing the slide rod 10 causes the bent part of the hook 8 to extend out of the outside of the fixed protrusion on the other side. Rotating the lifting screw 19 causes the hook 8 to move downward. Then, rotating the adjusting screw 18, which is rotatably connected to the trapezoidal block 16 and threadedly connected to the adjusting seat 13, allows the trapezoidal block 16 to move downward. It is worth noting that the inclined surface of the trapezoidal block 16 abuts against the slope of the push block 14, which can prevent the trapezoidal block 16 from rotating with the adjusting screw 18, even when the adjusting screw 18 starts to rotate. The trapezoidal block 16 may shift slightly. Due to the limited space of the slide 12, the direction of the trapezoidal block will be corrected as it descends. As the trapezoidal block descends, it will push the push block 14 to move to both sides. When the two sides of the push block 14 abut against the inner wall of the slide of the fixed seat 6 and the movable seat 7 respectively, the movable seat 7 will no longer move. At the same time, the claw of the hook 8 will abut tightly against the fixed protrusion 4. Preferably, the horizontal distance adjustment of the hook 8 does not need to be too large, so the length setting of the slide 12 does not need to be too large, so the horizontal position adjustment of the transfer seat 7 does not need to be too large. The adjusting seat 13 will always move within the slide 12 of the fixed seat 6 and the movable seat 7.

[0025] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0026] It will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connection structure for a ventilation duct (1), comprising a flange plate (2) at the end of the ventilation duct (1), characterized in that: A sealing ring (3) is sandwiched between the two flange plates (2). A fixed protrusion (4) is provided on the side wall of the two ventilation ducts (1) at their close ends. The two fixed protrusions (4) are connected by fastening bolts (5). A fixed seat (6) is installed on one of the fixed protrusions (4). The fixed seat (6) is slidably connected to the movable seat (7). The movable seat (7) is connected to one end of the hook (8). The other end of the hook (8) is engaged with the fixed protrusion (4). A sealing strip (9) is wrapped around the outside of the flange plate (2) connection.

2. A connection structure of a ventilation duct (1) according to claim 1, characterized in that: The fixed seat (6) is fixedly installed on the fixed protrusion (4) by bolts. The end of the fixed seat (6) is provided with a slide rod (10), which passes through the movable seat (7) and is connected to the anti-detachment cap (11).

3. A connection structure of a ventilation duct (1) according to claim 2, characterized in that: The fixed seat (6) and the movable seat (7) are provided with sliding grooves (12) on opposite sides. The two ends of the adjusting seat (13) are slidably connected to the fixed seat (6) and the movable seat (7) through the sliding grooves (12). The adjusting seat (13) is provided with push blocks (14) on both sides. The opposite sides of the two push blocks (14) are inclined slopes (15). A trapezoidal block (16) is provided between the two push blocks (14). The inclined surfaces on both sides of the trapezoidal block (16) abut against the slopes (15) of the push blocks (14). The two push blocks (14) are connected by springs (17).

4. A connection structure of a ventilation duct (1) according to claim 3, characterized in that: The trapezoidal block (16) is rotatably connected to the bottom of the adjusting screw (18), and the adjusting screw (18) is threadedly connected to the top of the adjusting seat (13).

5. A connection structure of a ventilation duct (1) according to claim 4, characterized in that: The hook (8) is threadedly connected to the lifting screw (19), the bottom of the lifting screw (19) is rotatably connected to the moving seat (7), the moving seat (7) is provided with a guide rod (20), and the hook (8) is slidably connected to the guide rod (20).

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