Connecting device of ventilating duct

Abstract

The utility model discloses a ventilating duct connecting device which comprises ventilating ducts, an upper clamping groove and a lower clamping groove, the ventilating ducts are arranged in two sets, connecting plates are installed on the surfaces of the two ends of each ventilating duct, first sliding grooves are formed in the two ends of the lower clamping groove, U-shaped clamping grooves are formed in the first sliding grooves, and clamping devices are arranged in the upper clamping groove and the lower clamping groove. The two clamping devices are oppositely installed in the upper clamping groove and the lower clamping groove correspondingly, the multiple clamping devices are installed in the two ends of the upper clamping groove, the multiple clamping devices are arranged on the surface of the lower end of the upper clamping groove, and the locking devices are arranged in the ends of the two clamping devices. And then the upper clamping groove, the lower clamping groove and the U-shaped clamping groove can be locked through the arranged locking device, the two sets of connecting plates can be extruded through the arranged clamping device so that the two sets of connecting plates can be tightly attached, and therefore the sealing performance of the two sets of connecting plates can be improved when the two sets of connecting plates are connected.

Description

Technical Field

[0001] This utility model relates to the field of ventilation duct technology, specifically a connection device for ventilation ducts. Background Technology

[0002] Ventilation ducts are metal or composite pipes used in ventilation and air conditioning projects for industrial and civil buildings. They are a type of municipal infrastructure designed to improve air circulation and reduce the concentration of harmful gases. The installation of ventilation ducts effectively enhances air circulation within buildings and reduces the concentration of harmful gases.

[0003] Existing ventilation ducts are typically connected using flanges, which are cumbersome, time-consuming, and labor-intensive during installation and disassembly, reducing work efficiency. Therefore, a new connection device for ventilation ducts is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a solution to the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a connecting device for a ventilation duct, comprising a ventilation duct, an upper slot and a lower slot, wherein the ventilation duct is provided in two sets, and connecting plates are installed on the surfaces of both ends of the duct; both ends of the lower slot are provided with a first sliding groove, and a U-shaped slot is provided inside the first sliding groove.

[0006] Both the upper and lower slots are equipped with clamping devices. There are two sets of clamping devices, which are installed facing each other inside the upper and lower slots respectively. The upper slot is installed inside both ends, and multiple sets are opened on the surface of the lower end. Both sets are equipped with locking devices inside one end.

[0007] Preferably, the locking device includes: a slot assembly, a connecting assembly, a pull rod, a collar, a locking plate, a sleeve, and a spring. One end of the pull rod passes through the connecting tube and is connected to a pull ring. The other end of the pull rod is slidably installed inside the sleeve. The bottom of the sleeve is installed on the inner wall of one end of the connecting tube. The collar is installed on the surface of the lower end of the pull rod. The spring is installed on the outer side of the lower end of the pull rod, with its lower end connected to the upper surface of the sleeve and its upper end connected to the lower surface of the collar. One side of the locking plate is hinged to one end of the connecting assembly.

[0008] Preferably, the clamping device includes: a bolt and a clamping plate, the clamping plate being disposed inside the upper and lower slots, the bolt being disposed on one side of the upper slot and the other side of the lower slot, one end of the bolt being rotatably mounted on the surface of one side of the clamping plate through the upper and lower slots.

[0009] Preferably, the slot assembly includes: a connecting block, a through hole, and a slot. Two sets of connecting blocks are provided and are respectively installed on the surfaces at both ends of the lower slot. The through hole is opened at the center of one side of the connecting block. Multiple sets of slots are provided and are opened on the inner wall of the through hole.

[0010] Preferably, the connecting assembly includes: a hinge block and a connecting rod. Multiple sets of hinge blocks are provided and are respectively installed on the surfaces of the collar and the sleeve. Multiple sets of connecting rods are provided, with one end hinged to the outside of the hinge block and the other end hinged to one side of the clamping plate.

[0011] Preferably, a limiting groove is formed on one side of both ends of the upper card slot, and the limiting groove fits into the U-shaped card slot.

[0012] Preferably, slide bars are installed on both sides of the lower end of the two sets of U-shaped slots, and second slide grooves are opened on the inner walls of both sides of the first slide groove. The slide bars are locked inside the second slide grooves and can slide.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The upper slot, lower slot, and U-shaped slot are designed to quickly connect two sets of ventilation ducts. The locking device can then lock the upper slot, lower slot, and U-shaped slot to secure the two sets of ventilation ducts, saving time and effort and greatly improving work efficiency.

[0015] 2. By rotating the two sets of bolts to press the clamping plate to one side, the movement of the clamping plate can press the two sets of connecting plates to fit tightly, thereby improving the sealing performance when the two sets of connecting plates are connected. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main view of this utility model;

[0017] Figure 2 This is a schematic diagram of the upper slot of this utility model;

[0018] Figure 3 This is a schematic diagram of the lower slot of this utility model;

[0019] Figure 4 This is a schematic diagram of the connecting block of this utility model;

[0020] Figure 5 This is a schematic diagram of the locking device of this utility model;

[0021] In the diagram: 1-ventilation duct, 2-upper slot, 3-lower slot, 4-U-shaped slot, 5-pull ring, 6-connecting plate, 7-connecting pipe, 8-limiting groove, 9-bolt, 10-clamping plate, 11-through groove, 12-first sliding groove, 13-sliding strip, 14-second sliding groove, 15-connecting block, 16-through hole, 17-slot, 18-pull rod, 19-ring, 20-hinge block, 21-connecting rod, 22-clamping plate, 23-sleeve, 24-spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please refer to Figure 1-5 As shown, this utility model provides a connecting device for a ventilation duct, including a ventilation duct 1, an upper slot 2 and a lower slot 3. The ventilation duct 1 is provided with two sets, and connecting plates 6 are installed on the surfaces of both ends. The lower slot 3 is provided with a first sliding groove 12 at both ends, and a U-shaped slot 4 is provided inside the first sliding groove 12. Clamping devices are provided inside the upper slot 2 and the lower slot 3. There are two sets of clamping devices, which are installed opposite each other inside the upper slot 2 and the lower slot 3. 7 are installed inside the upper slot 2 at both ends. Multiple sets of 11 are opened on the surface of the lower end of the 7. A locking device is provided inside one end of each of the two sets of 7.

[0024] Specifically, the two sets of ventilation ducts 1 can be quickly spliced ​​together by the set upper slot 2, lower slot 3 and U-shaped slot 4. Then, the set locking device can lock the upper slot 2, lower slot 3 and U-shaped slot 4, thereby fixing the two sets of ventilation ducts 1 together, saving time and effort and greatly improving work efficiency. The set clamping device can squeeze the two sets of connecting plates 7 to make them fit tightly, thereby improving the sealing performance when the two sets of connecting plates 7 are connected.

[0025] The locking device includes a slot assembly, a connecting assembly, a pull rod 18, a collar 19, a locking plate 22, a sleeve 23, and a spring 24. One end of the pull rod 18 passes through the connecting tube 7 and is connected to a pull ring 5. The other end of the pull rod 18 is slidably installed inside the sleeve 23. The bottom of the sleeve 23 is installed on the inner wall of one end of the connecting tube 7. The collar 19 is installed on the lower surface of the pull rod 18. The spring 24 is installed on the outer side of the lower end of the pull rod 18, with its lower end connected to the upper surface of the sleeve 23 and its upper end connected to the lower surface of the collar 19. One side of the locking plate 22 is hinged to one end of the connecting assembly. By pulling the pull ring 5 upward, the pull rod 18 slides inside the sleeve 23, thereby driving the collar installed on the lower surface of the pull rod 18. 19 moves along with the hinge block 20, which in turn moves the hinge block 20 upward. At the same time, one end of the spring 24 is pulled upward. The movement of the hinge block 20 pulls one end of the connecting rod 21 upward, causing the other end of the connecting rod 21 to pull the locking plate 22 inward, causing it to retract into the through groove 11. At this time, one end of the connecting tube 7 is inserted into the through hole 16. Then, the pull ring 5 is released. The rebound force of the spring 24 pulls the collar 19 and the pull rod 18 downward to reset. The movement of the collar 19 causes the hinge block 20 and one end of the connecting rod 21 to move, thereby causing the other end of the connecting rod 21 to push the locking plate 22 through the through groove 11 to expand outward, thereby locking the upper locking groove, the lower locking groove, and the U-shaped locking groove.

[0026] The clamping device includes a bolt 9 and a clamping plate 10. The clamping plate 10 is located inside the upper slot 2 and the lower slot 3. The bolt 9 is located on one side of the upper slot 2 and the other side of the lower slot 3. One end of the bolt 9 passes through the upper slot 2 and the lower slot 3 and is rotatably mounted on the surface of one side of the clamping plate 10. By rotating the bolt 9, the clamping plate 10 is moved, thereby squeezing the connecting plate 6 and increasing the sealing performance during connection.

[0027] The slot assembly includes a connecting block 15, a through hole 16, and a slot 17. Two sets of connecting blocks 15 are provided and installed on the surfaces at both ends of the lower slot 3. The through hole 16 is opened at the center of one side of the connecting block 15. Multiple sets of slots 17 are provided and are opened on the inner wall of the through hole 16. The through hole 16 facilitates the insertion of one end of the connecting pipe 7 into it. The slot 17 facilitates the fixing of the locking device, thereby connecting the two sets of ventilation pipes 1.

[0028] The connecting components include: hinge blocks 20 and connecting rods 21. Multiple sets of hinge blocks 20 are provided and are respectively installed on the surfaces of collar 19 and sleeve 23. Multiple sets of connecting rods 21 are provided, with one end hinged to the outside of hinge block 20 and the other end hinged to one side of clamping plate 22. The movement of hinge block 20 and connecting rod 21 can drive clamping plate 22 to move, thereby achieving the effect of expansion or contraction.

[0029] Wherein: a limiting groove 8 is provided on one side of both ends of the upper card slot 2. The limiting groove 8 fits with the U-shaped card slot 4. Through the setting of the limiting groove 8, it is easy to insert one end of the U-shaped card slot 4 into its interior, thereby achieving the effect of limiting and fixing.

[0030] Among them: the two sets of U-shaped slots 4 are equipped with slide bars 13 on both sides of the lower end, and the inner walls of the first slide groove 12 are provided with second slide grooves 14. The slide bars 13 are locked inside the second slide grooves 14 and can slide. By setting the slide bars 13 and the second slide grooves 14, the U-shaped slots 4 can be limited, and at the same time, they can be made more stable when moving.

[0031] Working Principle: This utility model is a connecting device for ventilation ducts. First, two sets of ventilation ducts 1 are connected, so that the two sets 6 overlap. Then, the U-shaped groove 4 is pulled to slide in the first sliding groove 12, and at the same time, the sliding strip 13 is driven to slide in the 14 opened on the inner wall of the first sliding groove 12 to open to both sides. Then, the lower groove 3 is locked on the outer side of the bottom of the connecting plate 6. Then, the U-shaped groove 4 is pushed to move inward, so that it is locked on the outer side of both sides of the connecting plate 6. Then, the upper groove 2 is locked on the outer side of the upper end of the connecting plate 6, and at the same time, one end of the U-shaped groove 4 is locked in the limiting groove 8 opened at both ends of the upper groove 2. At this time, the pull ring 5 is pulled upward, which drives the pull rod 18 to slide in the sleeve 23 and move upward, thereby driving the collar 19 installed on the lower end surface of the pull rod 18 to move accordingly. The movement of the collar 19 drives the hinge block 20 to move upward. Pull one end of the spring 24 upward, and the movement of the hinge block 20 pulls one end of the connecting rod 21 upward, causing the other end of the connecting rod 21 to pull the clamping plate 22 inward, so that it retracts into the through groove 11. At this time, insert one end of the connecting pipe 7 into the through hole 16, and then release the pull ring 5. The rebound force of the spring 24 pulls the collar 19 and the pull rod 18 downward to reset. The movement of the collar 19 drives the hinge block 20 and one end of the connecting rod 21 to move, so that the other end of the connecting rod 21 pushes the clamping plate 22 through the through groove 11 to expand outward, so that it is locked in the clamping groove 17 opened in the inner wall of the through hole 16 for fixation. Finally, rotate the two sets of bolts 9 to squeeze the clamping plate 10 to one side. The movement of the clamping plate 10 can squeeze the two sets of connecting plates 7 to make them fit tightly, thereby completing the connection of the two sets of ventilation pipes 1.

[0032] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A connecting device for a ventilation duct, comprising a ventilation duct (1), an upper slot (2), and a lower slot (3), characterized in that: The ventilation duct (1) is provided with two sets, and connecting plates (6) are installed on the surface of both ends. The lower slot (3) is provided with a first sliding groove (12) at both ends, and a U-shaped slot (4) is provided inside the first sliding groove (12). The upper slot (2) and the lower slot (3) are both equipped with clamping devices. There are two sets of clamping devices, which are installed opposite each other inside the upper slot (2) and the lower slot (3). Connecting pipes (7) are installed inside both ends of the upper slot (2). Multiple sets (11) are opened on the surface of the lower end of the connecting pipes (7). Locking devices are provided inside one end of both sets of connecting pipes (7).

2. The connection device for a ventilation duct according to claim 1, characterized in that: The locking device includes: a slot assembly, a connecting assembly, a pull rod (18), a collar (19), a locking plate (22), a sleeve (23), and a spring (24). One end of the pull rod (18) passes through the connecting tube (7) and is connected to a pull ring (5). The other end of the pull rod (18) is slidably installed inside the sleeve (23). The bottom of the sleeve (23) is installed on the inner wall of one end of the connecting tube (7). The collar (19) is installed on the surface of the lower end of the pull rod (18). The spring (24) is installed on the outer side of the lower end of the pull rod (18), with its lower end connected to the upper surface of the sleeve (23) and its upper end connected to the lower surface of the collar (19). One side of the locking plate (22) is hinged to one end of the connecting assembly.

3. The connection device for a ventilation duct according to claim 1, characterized in that: The clamping device includes a bolt (9) and a clamping plate (10). The clamping plate (10) is disposed inside the upper slot (2) and the lower slot (3). The bolt (9) is disposed on one side of the upper slot (2) and the other side of the lower slot (3). One end of the bolt passes through the upper slot (2) and the lower slot (3) and is rotatably mounted on the surface of one side of the clamping plate (10).

4. The connection device for a ventilation duct according to claim 2, characterized in that: The slot assembly includes: a connecting block (15), a through hole (16) and a slot (17). The connecting block (15) is provided in two sets, which are respectively installed on the surfaces at both ends of the lower slot (3). The through hole (16) is opened at the center of one side of the connecting block (15). The slot (17) is provided in multiple sets and is opened on the inner wall of the through hole (16).

5. A connection device for a ventilation duct according to claim 2, characterized in that: The connecting assembly includes: a hinge block (20) and a connecting rod (21). The hinge block (20) is provided in multiple sets and is respectively installed on the surface of the collar (19) and the sleeve (23). The connecting rod (21) is provided in multiple sets, with one end hinged to the outside of the hinge block (20) and the other end hinged to one side of the clamping plate (22).

6. The connection device for a ventilation duct according to claim 1, characterized in that: Limiting grooves (8) are formed on one side of both ends of the upper slot (2), and the limiting grooves (8) fit into the U-shaped slot (4).

7. A connection device for a ventilation duct according to claim 1, characterized in that: Slide bars (13) are installed on both sides of the lower end of the two sets of U-shaped slots (4). A second slide groove (14) is provided on the inner wall of both sides of the first slide groove (12). The slide bar (13) is inserted into the second slide groove (14) and can slide.

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