Splicing type industrial ventilation pipe

Abstract

The utility model discloses a splicing type industrial ventilation pipe, and relates to the field of industrial ventilation, the splicing type industrial ventilation pipe comprises a flame-retardant waterproof fabric pipeline, one end of the flame-retardant waterproof fabric pipeline is provided with an outer supporting mechanism, and the outer supporting mechanism comprises a gear located at one end of the flame-retardant waterproof fabric pipeline; a plurality of fixing rods are distributed at one end of the gear at equal intervals in the circumferential direction, the ends, close to the middle of the gear, of the fixing rods are fixedly connected to form a whole, an outer supporting rod is arranged in each fixing rod, and the outer supporting rods can freely stretch out and draw back in the fixing rods to achieve length adjustment. One end of the gear is rotationally connected with the connecting position of the multiple fixing rods. The gear is manually rotated, the position of the notch designed in the gear is changed, the rotating rod is forced to move, the outer supporting rod on the rotating rod is driven to be expanded outwards or retracted inwards, and after being expanded, one end of the industrial pipeline cannot fall off from the industrial pipeline to be placed in a hole due to certain uncontrollable factors in the using process.

Description

Technical Field

[0001] This utility model relates to the field of industrial ventilation, specifically a splicable industrial ventilation duct. Background Technology

[0002] Industrial ventilation ducts are used in ship repair, shipbuilding, engineering, tunnels, mining ventilation, water pumping for biogas, engine rooms, municipal engineering projects, basements, underground work dust and fresh air delivery, water pumping for vehicle exhaust, air supply for airport boarding bridges, fire smoke and other harsh environments.

[0003] The product connects the end of the pipe to the pre-designed wall opening, and the chains attached to each pipe section are connected to each other according to the required length to achieve the design effect and complete the task of delivering and dispersing air to the target location.

[0004] Currently, the ends of industrial ventilation ducts and the openings where they are placed cannot be adjusted after the design is completed, and the ducts can move within the openings, leading to the possibility of ducts falling off during use. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a splicable industrial ventilation pipe to solve the technical problem that the end of the industrial ventilation pipe and the opening where it is placed cannot be adjusted again after the design is completed, and the pipe can move within the opening, which leads to the pipe falling off during use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A splicable industrial ventilation duct includes a flame-retardant and waterproof fabric duct. One end of the flame-retardant and waterproof fabric duct is provided with an external support mechanism. The external support mechanism includes a gear located at one end of the flame-retardant and waterproof fabric duct. Multiple fixed rods are equidistantly distributed along the circumference of one end of the gear. The ends of the multiple fixed rods near the middle of the gear are fixedly connected to each other to form a whole. Each of the multiple fixed rods is provided with an external support rod. The external support rod can freely extend and retract within the fixed rod to achieve length adjustment. One end of the gear is rotatably connected to the connection position of the multiple fixed rods.

[0007] The present invention is further configured such that the gear has an equal number of arc-shaped grooves at equal intervals as the fixed rods, one end of the outer support rod is fixedly connected to a rotating rod, the rotating rod is connected through the arc-shaped grooves, and the rotating rod can rotate and change position along the arc-shaped grooves. The fixed rod has a groove, the outer support rod is located in the groove, and the outer support rod can move and change position within the groove.

[0008] The present invention is further configured such that one end of the gear is provided with a self-locking mechanism, the self-locking mechanism includes a ratchet fixed to one end of the gear and a connecting rod fixedly connected to a fixed rod, a pawl is rotatably connected to the connecting rod, one end of the pawl is fixed with a spring, the other end of the spring is fixedly connected to the connecting rod, the spring is used to reset the rotating pawl, and the pawl and the ratchet mesh.

[0009] The present invention is further configured such that the flame-retardant and waterproof fabric pipe is provided with a plurality of first chain teeth, a plurality of second chain teeth, a plurality of third chain teeth and a plurality of fourth chain teeth evenly distributed. Each of the first chain teeth and the third chain teeth is provided with a zipper head. The first chain teeth can be engaged with the second chain teeth through the zipper head, and the third chain teeth can be engaged with the fourth chain teeth through the zipper head. They are connected by the zipper head and an iron ring is provided inside the connection.

[0010] The present invention is further configured such that a fan fixing frame is installed at one end of the flame-retardant and waterproof fabric pipe, and a fan is installed inside the flame-retardant and waterproof fabric pipe.

[0011] In summary, the present invention has the following main advantages:

[0012] This invention utilizes a manually rotated gear. The slot on the gear changes position, forcing a rotating rod to move and causing the outer support rod on the rotating rod to either expand outward or retract inward. When expanded, it prevents one end of the industrial pipe from detaching from its placement opening due to uncontrollable factors during use. Simultaneously, when the outer support rod expands outward to fit against the inner wall of the opening, the ratchet on the gear engages with the pawl on the connecting rod to complete a self-locking task, thus ensuring that the ventilation pipe fits snugly against its placement opening and preventing the pipe from easily detaching from its placement opening during use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of an industrial ventilation duct system.

[0014] Figure 2 This is a rear view of the industrial ventilation duct as a whole.

[0015] Figure 3 This is an enlarged view of part A of the industrial ventilation duct;

[0016] Figure 4 This is a cross-sectional view of a partial industrial ventilation duct.

[0017] In the diagram: 1. External support mechanism; 2. First chain tooth; 3. Second chain tooth; 4. Third chain tooth; 5. Fourth chain tooth; 6. Fan mounting bracket; 7. Fan located inside the duct; 8. Flame-retardant and waterproof fabric duct; 9. Fan; 10. Gear; 11. Fixing rod; 12. External support rod; 13. Connecting rod; 14. Ratchet; 15. Groove; 16. Rotating rod; 17. Pawl; 18. Iron ring; 19. Zipper head. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] The embodiments of this utility model will be described below based on its overall structure.

[0020] A modular industrial ventilation duct, as shown in the figure, includes an external support mechanism 1 at one end of a flame-retardant and waterproof fabric duct 8. The external support mechanism 1 includes a gear 10 located at one end of the flame-retardant and waterproof fabric duct 8. Multiple fixed rods 11 are equidistantly distributed along the cylindrical direction at one end of the gear 10. The ends of the multiple fixed rods 11 near the middle of the gear 10 are fixedly connected to each other to form a whole. Each of the multiple fixed rods 11 contains an external support rod 12, which can freely extend and retract within the fixed rods 11 to achieve length adjustment. One end of the gear 10 is rotatably connected to the fixed connection position of the multiple fixed rods 11. The gear 10 has arc-shaped grooves equidistantly spaced, the same number as the number of fixed rods 11. One end of 2 is fixedly connected to a rotating rod 16, which is connected through the arc-shaped cavity. The rotating rod 16 can rotate and change position along the arc-shaped cavity. A groove 15 is provided in the fixed rod 11, and the outer support rod 12 is located in the groove 15. The outer support rod 12 can move and change position within the groove 15. One end of the gear 10 is provided with a self-locking mechanism. The self-locking mechanism includes a ratchet 14 fixed to one end of the gear 10 and a connecting rod 13 fixedly connected to the fixed rod 11. A pawl 17 is rotatably connected to the connecting rod 13. A spring is fixed to one end of the pawl, and the other end of the spring is fixedly connected to the connecting rod 13. The spring is used to reset the rotating pawl 17. The pawl 17 and the ratchet 14 mesh with each other.

[0021] It should be noted that when the gear 10 is rotated, the arc-shaped cavity groove designed on the gear 10 changes position, forcing the rotating rod 16 to move and driving the outer support rod 12 on the rotating rod 16 to expand outward or retract inward. When the outer support rod 12 expands outward to fit against the inner wall of the opening, the ratchet 14 on the gear 10 meshes with the pawl 17 on the connecting rod 13 to complete the self-locking task, thereby making the flame-retardant and waterproof fabric pipe 8 fit against the opening where it is placed.

[0022] Please see Figure 1 , Figure 3 .

[0023] The flame-retardant and waterproof fabric pipe 8 has multiple first chain teeth 2, multiple second chain teeth 3, multiple third chain teeth 4 and multiple fourth chain teeth 5 evenly distributed. Each of the first chain teeth 2 and the third chain teeth 4 is provided with a zipper head 19. The first chain teeth 2 can be engaged with the second chain teeth 3 through the zipper head 19, and the third chain teeth 4 can be engaged with the fourth chain teeth 5 through the zipper head 19. They are connected by the zipper head 19, and an iron ring 18 is provided inside the connection.

[0024] Understandably, when the chain head 19 slides along the chain teeth, the internal guide groove squeezes the chain teeth on both sides, causing the chain teeth on both sides to mesh and form a continuous closed loop structure, thereby freely adjusting the length of the pipe. The iron ring 18 can keep the flame-retardant and waterproof fabric pipe 8 in its original shape.

[0025] Please see Figure 1 , Figure 4 .

[0026] One end of the flame-retardant and waterproof fabric duct 8 is equipped with a fan mounting bracket 6, and a fan 9 that cooperates with the flame-retardant and waterproof fabric duct 8 is installed inside the fan mounting bracket 6.

[0027] Understandably, the fan mounting bracket 6 secures the fan 9 to one end of the pipe 8.

[0028] Working principle: When the fan 9 is started, the gas passes through the fan 9 to achieve the purpose of passing through the flame-retardant and waterproof fabric pipe 8. The rotating rod connected to the ratchet 14 on the gear 10 is manually rotated. The arc-shaped cavity on the gear 10 changes position due to the rotation of the gear 10, forcing the rotating rod 16, which passes through the arc-shaped cavity, to rotate. The rotating rod 16 and the outer support rod 12 are a whole. At the same time, the outer support rod 12 is placed in the groove 15 designed on the fixed rod 11. Therefore, when the rotating rod 16 rotates, the outer support rod 12 moves outward along the trajectory of the groove 15, so that the outer support rod 12 fits into the designed opening. At the same time, the ratchet 14 on the gear 10 meshes with the pawl 17 on the connecting rod 13 to complete the self-locking task. After the above series of actions are completed, the purpose of making the pipe fit into its designed opening is achieved.

[0029] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A splicable industrial ventilation duct comprising a flame- and water- retardant fabric duct (8), characterized in that: One end of the flame-retardant and waterproof fabric pipe (8) is provided with an external support mechanism (1). The external support mechanism (1) includes a gear (10) located at one end of the flame-retardant and waterproof fabric pipe (8). One end of the gear (10) is provided with a plurality of fixed rods (11) evenly distributed along the circumferential direction. The ends of the plurality of fixed rods (11) near the middle of the gear (10) are fixedly connected to each other to form a whole. Each of the plurality of fixed rods (11) is provided with an external support rod (12). The external support rod (12) can freely extend and retract within the fixed rod (11) to achieve length adjustment. One end of the gear (10) is rotatably connected to the connection position of the plurality of fixed rods (11).

2. The modular industrial ventilation duct according to claim 1, characterized in that: The gear (10) has an equal number of arc-shaped grooves at equal intervals, the same as the number of fixed rods (11). One end of the outer support rod (12) is fixedly connected to a rotating rod (16). The rotating rod (16) is connected through the arc-shaped groove. The rotating rod (16) can rotate and change position along the arc-shaped groove. The fixed rod (11) has a groove (15) inside. The outer support rod (12) is located in the groove (15) and can move and change position within the groove (15).

3. The modular industrial ventilation duct according to claim 2, characterized in that: One end of the gear (10) is provided with a self-locking mechanism. The self-locking mechanism includes a ratchet (14) fixed to one end of the gear (10) and a connecting rod (13) fixedly connected to the fixed rod (11). A pawl (17) is rotatably connected to the connecting rod (13). A spring is installed at one end of the pawl. The other end of the spring is fixedly connected to the connecting rod (13). The spring is used to reset the rotating pawl (17). The pawl (17) and the ratchet (14) mesh with each other.

4. The modular industrial ventilation duct according to claim 1, characterized in that: The flame-retardant and waterproof fabric pipe (8) has multiple first chain teeth (2), multiple second chain teeth (3), multiple third chain teeth (4) and multiple fourth chain teeth (5) evenly distributed on its outer side. Each of the first chain teeth (2) and the third chain teeth (4) is provided with a zipper head (19). The first chain teeth (2) can be engaged with the second chain teeth (3) through the zipper head (19). The third chain teeth (4) are connected to the fourth chain teeth (5) through the zipper head (19), and an iron ring (18) is provided inside the connection.

5. The modular industrial ventilation duct according to claim 1, characterized in that: One end of the flame-retardant and waterproof fabric pipe (8) is equipped with a fan mounting bracket (6), and a fan (9) that cooperates with the flame-retardant and waterproof fabric pipe (8) is installed inside the fan mounting bracket (6).

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