Building ventilation air conditioner air duct connecting device

Abstract

The utility model relates to the field of ventilation air conditioners, and discloses a building ventilation air conditioner air duct connecting device which comprises an outer ring, the outer wall of the outer ring is fixedly connected with a plurality of fixing devices, the inner walls of the fixing devices are slidably connected with sliding plates, and the outer walls of the sliding plates penetrate through the inner wall of the outer ring. The device comprises a sliding plate, connectors are rotatably connected to the interiors of the left end and the right end of the sliding plate, inserting pipes are fixedly connected to the opposite sides of the bottom ends of the two connectors, the opposite ends of the two inserting pipes are sleeved with inner rings, fixing pipes are arranged on the outer walls of the inner rings, and extension assemblies are arranged in the fixing pipes. The fixing pipe is connected with the fixing ring through the extension assembly. According to the utility model, the rotating handle is rotated to drive the threaded rod to drive the sliding plate, so that other sliding plates move due to the sinking of the connector to close and extrude the joint of the two air ducts, and the installation process is simpler, more convenient and quicker.

Description

Technical Field

[0001] This utility model relates to the field of ventilation and air conditioning, and in particular to a building ventilation and air conditioning duct connection device. Background Technology

[0002] A building ventilation and air conditioning duct connection device is a component used in building ventilation and air conditioning systems. Its main function is to connect different parts of the duct system, and it can connect different sections of the duct or the duct to the air outlet, air inlet, etc. of the air conditioning equipment to form a complete air circulation path.

[0003] A search revealed a ventilation duct connection device for a heating, ventilation, and air conditioning system, with publication number CN218914083U. The device includes a first mounting plate, a second mounting plate, several outer cylinders, several return springs, several inner cylinders, several stops, several sliding rods, several screws, and several nuts. The first mounting plate is fixedly connected to the ventilation duct body and located on the outer wall of the ventilation duct body. The second mounting plate is also fixedly connected to the ventilation duct body and located on the outer wall of the ventilation duct body. The several outer cylinders are respectively fixedly connected to the first mounting plate.

[0004] Based on the aforementioned patent, the device is constructed by connecting a first mounting plate to the ventilation duct body, a second mounting plate to the ventilation duct body, several outer cylinders to the first mounting plate, several return springs to the outer cylinders, several inner cylinders to the return springs, several stops to the inner cylinders, several sliding rods to the stops, several screws to the sliding rods, and several nuts to the screws. When a nut loosens on a screw, a return spring pushes the inner cylinder out of the outer cylinder, filling the gap created by the loosened nut and preventing gaps between the two ventilation duct bodies. However, while the device relies on screws and nuts for connection, although it is relatively secure initially, over time, vibration and temperature changes may cause the threaded connection to loosen, leading to leaks at the pipe connection. Furthermore, the reliance on screws and nuts for fixation makes the device difficult to disassemble and modify. If the piping system needs modification or maintenance, disassembling the threaded connection may be difficult and time-consuming. Additionally, the device lacks extensibility, significantly reducing its applicability. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a building ventilation and air conditioning duct connection device that can be fixed after adjustment according to the size of the duct, and the length of both sides can be adjusted according to the length of the two ducts.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a building ventilation and air conditioning duct connection device, comprising an outer ring, wherein a plurality of fasteners are fixedly connected to the outer wall of the outer ring, a sliding plate is slidably connected to the inner wall of the fasteners, the outer wall of the sliding plate penetrates the inner wall of the outer ring, connectors are rotatably connected to the left and right ends of the sliding plate, inserts are fixedly connected to the opposite sides of the bottom ends of the two connectors, an inner ring is sleeved on the opposite ends of the two inserts, a fixing tube is provided on the outer wall of the inner ring, an extension component is provided inside the fixing tube, and the fixing tube is connected to the fixing ring through the extension component.

[0007] Furthermore, the extension assembly includes an extension tube slidably connected to the inner wall of the fixed tube. Springs are fixedly connected to the inner walls of both the front and rear sides of the extension tube. Pressing blocks are fixedly connected to the outer walls of the opposite ends of the two springs. The opposite ends of the two pressing blocks pass through the inner wall of the fixed tube.

[0008] Furthermore, the inner wall of the fixing tube is provided with several circular grooves on the front and rear sides, and the size of the circular grooves is adapted to the size of the pressing block.

[0009] Furthermore, the outer wall of the extension tube is fixedly connected to the fixing ring, which is used to fix the extension tube after it is extended.

[0010] Furthermore, the outer wall of the fixed tube is provided with a number of inserts, and the outer wall of the inner ring is provided with a number of slots. The size of the slots is adapted to the size of the inner ring, and the fixed tube rotates on the inner wall of the inner ring through the inserts and the slots.

[0011] Furthermore, the outer wall of the inner ring is fixedly connected with several buckles, and the outer wall of the insertion tube penetrates the inner wall of the inner ring and is engaged with the inner wall of the buckles.

[0012] Furthermore, the bottom outer wall of the sliding plate has a hole, and the size of the outer wall of the connector is adapted to the size of the hole.

[0013] Furthermore, a threaded rod is threadedly connected to the top of the inner wall of the top sliding plate, and a throttle is fixedly connected to the top of the threaded rod.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, rotating the throttle causes the threaded rod to drive the sliding plate, which in turn causes the other sliding plates to move due to the sinking of the connector, closing and squeezing the connection between the two air ducts, making the installation process simpler and faster.

[0016] 2. In this utility model, the two sides of the device are stretched by the extension component and then adjusted according to the actual distance between the air ducts. There is no need to customize the connecting parts of a specific length, which improves the applicability and flexibility of the device. Attached Figure Description

[0017] Figure 1 This is a perspective view of a building ventilation and air conditioning duct connection device proposed in this utility model;

[0018] Figure 2 This is a cross-sectional view of the outer ring of a building ventilation and air conditioning duct connection device proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the insert block of a building ventilation and air conditioning duct connection device proposed in this utility model;

[0020] Figure 4 This is a cross-sectional view of the fixing pipe of a building ventilation and air conditioning duct connection device proposed in this utility model.

[0021] Legend:

[0022] 1. Outer ring; 2. Fixer; 3. Sliding plate; 4. Threaded rod; 5. Throttle; 6. Connector; 7. Buckle; 8. Fixing tube; 9. Slot; 10. Extension tube; 11. Circular groove; 12. Pressing block; 13. Inner ring; 14. Hole; 15. Insert tube; 16. Insert block; 17. Spring. Detailed Implementation

[0023] 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.

[0024] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a building ventilation and air conditioning duct connection device, comprising an outer ring 1, a plurality of fasteners 2 fixedly connected to the outer wall of the outer ring 1, a sliding plate 3 slidably connected to the inner wall of the fasteners 2, the outer wall of the sliding plate 3 penetrating the inner wall of the outer ring 1, connectors 6 rotatably connected to the left and right ends of the sliding plate 3, a hole 14 opened on the outer wall of the bottom end of the sliding plate 3, the size of the outer wall of the connector 6 being adapted to the size of the hole 14, and the bottom ends of two connectors 6 being fixed on opposite sides. The device is connected with two insertion tubes 15. Each of the opposite ends of the two insertion tubes 15 is fitted with an inner ring 13. Several buckles 7 are fixedly connected to the outer wall of the inner ring 13. The outer wall of the insertion tube 15 passes through the inner wall of the inner ring 13 and is inserted into the inner wall of the buckle 7. A fixing tube 8 is provided on the outer wall of the inner ring 13. Several insertion blocks 16 are provided on the outer wall of the fixing tube 8. Several slots 9 are opened on the outer wall of the inner ring 13. The size of the slots 9 is adapted to the size of the inner ring 13. The fixing tube 8 rotates on the inner wall of the inner ring 13 through the insertion blocks 16 and the slots 9.

[0025] Specifically, the operator removes the inner ring 13, aligns the slot 9 on the inner ring 13 with the insert block 16 on the fixed tube 8, gently aligns and inserts it, then rotates the inner ring 13 so that the insert block 16 is fully inserted into the groove on the inner wall of the inner ring 13, ensuring a firm connection between the inner ring 13 and the fixed tube 8. Then, the bottom ends of several connectors 6 are aligned with several clips 7 fixedly connected to the outer wall of the inner ring 13 and inserted. Next, the insert tubes 15 fixedly connected to the bottom ends of the connectors 6 are sequentially passed through the inner ring 13 and inserted into the clips 7, ensuring that each insert tube 15 is correctly inserted into its corresponding clip 7 to form a stable support structure. After all the insert tubes 15 are inserted, the operator aligns the top ends of the connectors 6 with several clips 7 fixedly connected to the outer wall of the inner ring 13 and inserts them. The outer ring 1 is then inserted into the hole 14 on the sliding plate 3 and secured. The operator then removes the outer ring 1. By rotating the handle 5 on the outer ring 1, the threaded rod 4 fixed to the bottom of the handle 5 rotates. As the connector 6 at the bottom of the sliding plate 3 sinks, the inner ring 13 begins to swing. This swinging motion causes the remaining connectors 6 fixed to it to move, allowing the corresponding sliding plates 3 to slide on the fixture 2. When all the sliding plates 3 move inward together, they begin to clamp and tighten the air duct. Finally, when the connectors 6 on both sides of the outer ring 1, along with the sliding plates 3, have clamped the two air ducts, the connection operation of the air duct is considered complete.

[0026] Reference Figure 1 , Figure 3 and Figure 4The fixed tube 8 is provided with an extension component inside. The fixed tube 8 is connected to the fixed ring through the extension component. The extension component includes an extension tube 10 that is slidably connected to the inner wall of the fixed tube 8. Springs 17 are fixedly connected to the inner walls of the front and rear sides of the extension tube 10. Pressing blocks 12 are fixedly connected to the outer walls of the opposite ends of the two springs 17. The opposite ends of the two pressing blocks 12 pass through the inner wall of the fixed tube 8. Several circular grooves 11 are opened on the front and rear sides of the inner wall of the fixed tube 8. The size of the circular grooves 11 is adapted to the size of the pressing blocks 12. A fixed ring is fixedly connected to the outer wall of the extension tube 10. The fixed ring is used to fix the extension tube 10 after it is extended.

[0027] Specifically, by fitting fixed tubes 8 onto the outer walls of the two air ducts respectively, the material and structural design of the fixed tubes 8 allow them to be firmly attached to the outer walls of the air ducts. Then, according to the actual connection requirements of the two air ducts, the operator presses the pressing blocks 12 on both sides of the fixed tube 8, which compresses the spring 17 fixedly connected inside the fixed tube 8. As the spring 17 contracts, the pressing blocks 12 slide into the interior of the fixed tube 8 along the circular groove 11 opened on the inner wall of the fixed tube 8 under the push of the spring 17. Then, by pulling the extension tube 10, it slides on the inner wall of the fixed tube 8. When the extension tube 10 is pulled to the appropriate position, that is, the distance between the two air ducts is appropriately filled, the operator stops pulling. Then, by locking the fixed ring, the extension tube 10 and the fixed tube 8 form a stable and sealed connection. After stretching the two sides of the device through the extension component, it can be adjusted according to the actual distance between the air ducts. There is no need to customize the connectors of a specific length, which improves the applicability and flexibility of the device.

[0028] Working principle: First, take out the device and then fit the fixing tube 8 onto the outer wall of both air ducts. Then, press the pressing blocks 12 on both sides of the fixing tube 8 according to the actual connection requirements of the two air ducts. This will compress the springs 17, which are fixedly connected to one end of the pressing blocks 12, causing the springs 17 to contract under force. Then, the springs 17 contract, causing the pressing blocks 12 to slide from the circular grooves 11 opened on the inner wall of the fixing tube 8 into the interior of the fixing tube 8. Then, pull the extension tube 10, allowing it to slide on the inner wall of the fixing tube 8. After reaching the appropriate position, fix the extended extension tube 10 with the fixing ring fixedly connected to the outer wall of the extension tube 10. Then, take out the inner ring 13, align the slots 9 opened on the inner ring 13 with the inserts 16 on the fixing tube 8, and insert them. Then, rotate the inner ring 13 until the inserts 16 are fully inserted into the grooves on the inner wall of the inner ring 13. Then, align the bottom ends of the connectors 6 with the buckles 7 fixedly connected to the outer wall of the inner ring 13 and insert them. Finally, fix the bottom ends of the connectors 6. After the connecting tube 15 passes through the inner ring 13, it is inserted into the buckle 7. Then, when all the tubes 15 are inserted, the connector 6 is fixed by aligning the top of the connector 6 with the holes 14 on several sliding plates 3. Then, the outer ring 1 is removed, and the handle 5 on the outer ring 1 is rotated. The handle 5 drives the threaded rod 4 fixed at the bottom to rotate, so that the threaded rod 4 pushes or stretches the sliding plate 3 to slide on the inner wall of the fixture 2. Then, the connector 6 at the bottom of the sliding plate 3 sinks down, and the inner ring 13 swings. Then, the swing of the inner ring 13 drives the remaining connectors 6 on the inner ring 13 to move with the swing of the inner ring 13. Then, the swing of the connector 6 pulls the remaining sliding plates 3 to slide on the corresponding fixture 2. Then, when all the sliding plates 3 move inward together, they clamp and tighten the air duct. Then, when the connectors 6 on both sides of the outer ring 1 clamp the two air ducts with the sliding plates 3, it is considered that the air duct is connected.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A building ventilation and air conditioning duct connection device, comprising an outer ring (1), characterized in that: The outer wall of the outer ring (1) is fixedly connected to several fasteners (2). The inner wall of the fastener (2) is slidably connected to a sliding plate (3). The outer wall of the sliding plate (3) penetrates the inner wall of the outer ring (1). The left and right ends of the sliding plate (3) are rotatably connected to connectors (6). The bottom ends of the two connectors (6) are fixedly connected to opposite sides of each other with insertion tubes (15). The opposite ends of the two insertion tubes (15) are fitted with inner rings (13). The outer wall of the inner ring (13) is provided with a fixing tube (8). The inside of the fixing tube (8) is provided with an extension component. The fixing tube (8) is connected to the fixing ring through the extension component.

2. The building ventilation and air conditioning duct connection device according to claim 1, characterized in that: The extension assembly includes an extension tube (10) slidably connected to the inner wall of the fixed tube (8). Springs (17) are fixedly connected to the inner walls of both the front and rear sides of the extension tube (10). Pressing blocks (12) are fixedly connected to the outer walls of the opposite ends of the two springs (17). The opposite ends of the two pressing blocks (12) pass through the inner wall of the fixed tube (8).

3. The building ventilation and air conditioning duct connection device according to claim 2, characterized in that: The inner wall of the fixed tube (8) has several circular grooves (11) on both the front and rear sides, and the size of the circular grooves (11) is adapted to the size of the pressing block (12).

4. A building ventilation and air conditioning duct connection device according to claim 2, characterized in that: The outer wall of the extension tube (10) is fixedly connected to the fixing ring, which is used to fix the extension tube (10) after it is extended.

5. A building ventilation and air conditioning duct connection device according to claim 1, characterized in that: The outer wall of the fixed tube (8) is provided with a number of inserts (16), and the outer wall of the inner ring (13) is provided with a number of slots (9). The size of the slots (9) is adapted to the size of the inner ring (13). The fixed tube (8) rotates on the inner wall of the inner ring (13) through the inserts (16) and the slots (9).

6. A building ventilation and air conditioning duct connection device according to claim 1, characterized in that: The outer wall of the inner ring (13) is fixedly connected with several buckles (7), and the outer wall of the insertion tube (15) penetrates the inner wall of the inner ring (13) and is inserted into the inner wall of the buckles (7).

7. A building ventilation and air conditioning duct connection device according to claim 1, characterized in that: The bottom outer wall of the sliding plate (3) has a hole (14), and the size of the outer wall of the connector (6) is adapted to the size of the hole (14).

8. A building ventilation and air conditioning duct connection device according to claim 1, characterized in that: The top of the inner wall of the sliding plate (3) is threaded with a threaded rod (4), and the top of the threaded rod (4) is fixedly connected with a throttle (5).

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