Variable-angle air pipe connecting piece device
By using a variable angle duct connector device, and utilizing a moving mechanism and a flexible hose lined with steel wire made of high-temperature resistant, fire-retardant nylon fabric, the problems of large space occupation and misalignment during duct installation are solved. This achieves duct angle changes and airtightness, improving installation efficiency and overall appearance.
Patent Information
- Application Number
- CN202520649088.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-04-08
AI Technical Summary
Existing compact fan rooms have large space requirements for duct installation, which affects equipment layout when turning, and ventilation ducts are prone to misalignment, resulting in low installation efficiency and poor overall appearance.
The system employs a variable-angle duct connector device, which includes symmetrically arranged air inlet ducts and variable-angle flexible hoses. The duct angle is changed through a moving mechanism and a threaded rod system. The ventilation duct is fixed by a U-shaped rod and a pressure plate. The system uses flexible hoses made of high-temperature resistant, fire-retardant nylon cloth lined with steel wire and air inlet ducts made of galvanized steel plate.
It enables flexible changes in duct angle, improves installation efficiency and overall aesthetic quality, and ensures airtightness.
Smart Images

Figure CN223794840U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of duct connection technology, and in particular to a variable angle duct connection device. Background Technology
[0002] Ventilation ducts (also known as ventilation pipes, exhaust ducts, etc.) are piping systems used for air circulation, exhaust, or ventilation, and are widely used in buildings, industrial equipment, shopping malls, kitchens, offices, and other places. Their main function is to effectively guide airflow to maintain a balance of indoor air quality, temperature, and humidity, or to exhaust harmful gases. The design of ventilation ducts requires rational planning based on ventilation needs, building structure, and the usage environment. They play a crucial role in modern architecture and industry. Proper design and use of ventilation ducts can not only improve indoor air quality but also bring a more comfortable environment and energy-saving effects to buildings.
[0003] Currently, compact fan rooms have dense ductwork and limited space, which means that when the ducts are installed, they take up a lot of space when turning, affecting the equipment layout and the overall appearance. In addition, the ventilation ducts are prone to displacement and misalignment before they are connected and fixed, which affects the installation efficiency.
[0004] Therefore, we propose a variable angle duct connector device to solve the above problems. Utility Model Content
[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a variable angle duct connector device.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A variable angle duct connector device includes two symmetrically arranged air inlets, four variable angle flexible hoses connecting the two air inlets, and a moving mechanism on each of the two air inlets.
[0008] Preferably, the moving mechanism includes two support plates arranged vertically and vertically, and a threaded rod is rotatably connected between the two support plates. A moving block is threaded onto the threaded rod, and a U-shaped rod is fixedly connected to the moving block. A knob is rotatably connected to the upper end of the upper support plate, and the knob is coaxially fixedly connected to the threaded rod.
[0009] Preferably, each of the two air inlet pipes is fixedly connected to a slide rail, and each of the two slide rails is slidably connected to an L-shaped sliding block, with the two L-shaped sliding blocks respectively fixedly connected to two U-shaped rods.
[0010] Preferably, pressure plates are fixedly connected to the lower ends of the two U-shaped rods, and soft pads are fixedly fitted on the outer peripheral walls of the two air inlet pipes.
[0011] Preferably, both ends of the two air inlet pipes are fixedly connected to mounting blocks, and each of the four mounting blocks is provided with several mounting holes.
[0012] Preferably, the variable angle flexible hose is made of high-temperature resistant, fire-retardant nylon cloth lined with steel wire, and the air inlet pipe is made of galvanized steel plate.
[0013] Compared with existing technologies, the advantages of this device are:
[0014] 1. Connect the front and rear ventilation ducts to the outer perimeter of the two air inlet pipes. Use the U-shaped rod to lower and drive the pressure plate to lower and fix the ventilation duct. The soft pad can ensure the airtightness of the ventilation.
[0015] 2. Both ends of the two air inlet pipes are fixedly connected to mounting blocks. Each of the four mounting blocks has several mounting holes. The ventilation pipes are connected to the two air inlet pipes by means of bolts, nuts and other tooling and mounting holes on each mounting block. The angle of the ventilation pipes is changed by a variable angle flexible hose.
[0016] In summary, this device achieves angle changes in ventilation ducts through variable angle flexible hoses, making installation easier than traditional ducts and improving the overall aesthetic quality. Attached Figure Description
[0017] Figure 1 This is a side perspective view of a variable angle duct connector device proposed in this utility model;
[0018] Figure 2 This is a bottom perspective view of a variable angle duct connector device proposed in this utility model;
[0019] Figure 3 This is a detailed drawing of a variable angle duct connector device proposed in this utility model.
[0020] In the diagram: 1. Air inlet pipe, 2. Variable angle flexible hose, 3. Support plate, 4. Threaded rod, 5. Moving block, 6. Knob, 7. U-shaped rod, 8. Slide rail, 9. L-shaped sliding block, 10. Pressure plate, 11. Soft pad, 12. Mounting block, 13. Mounting hole. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] Reference Figures 1-3A variable angle duct connector device includes two symmetrically arranged air inlet pipes 1, and four variable angle hoses 2 are connected between the two air inlet pipes 1. The variable angle hoses 2 are made of high temperature resistant, fireproof and flame retardant nylon cloth lined with steel wire, and the air inlet pipes 1 are made of galvanized steel plate. The ventilation duct is connected to the two air inlet pipes 1, and then the angle is changed by the variable angle hoses 2.
[0023] The moving mechanism includes two support plates 3 arranged vertically and vertically, with a threaded rod 4 rotatably connected between the two support plates 3. A moving block 5 is threaded onto the threaded rod 4, and a U-shaped rod 7 is fixedly connected to the moving block 5. A slide rail 8 is fixedly connected to each of the two air inlet pipes 1, and an L-shaped sliding block 9 is slidably connected to each of the two slide rails 8. The two L-shaped sliding blocks 9 are fixedly connected to the two U-shaped rods 7 respectively. A knob 6 is rotatably connected to the upper end of the upper support plate 3. The knob 6 is coaxially fixedly connected to the threaded rod 4. By rotating the knob 6, the threaded rod 4 is rotated, and the moving block 5 can move up or down, causing the U-shaped rod 7 to slide up and down on the slide rail 8 through the L-shaped sliding block 9, thereby moving up and down.
[0024] The lower ends of the two U-shaped rods 7 are fixedly connected to pressure plates 10. Soft pads 11 are fixedly fitted on the outer peripheral walls of the two air inlet pipes 1. The front and rear ventilation pipes are fitted onto the outer peripheral walls of the two air inlet pipes 1. The pressure plates 10 are lowered by the U-shaped rods 7 to press and fix the ventilation pipes. The soft pads 11 can ensure the airtightness of the ventilation. The upper and lower ends of the two air inlet pipes 1 are fixedly connected to mounting blocks 12. Each of the four mounting blocks 12 is provided with several mounting holes 13. The ventilation pipes are connected to the two air inlet pipes 1 by means of bolts, nuts and other tooling and the mounting holes 13 on each mounting block 12. The angle change of the ventilation pipes is realized by the variable angle flexible hose 2.
[0025] When using this utility model, the front and rear ventilation ducts are sleeved on the outer peripheral walls of the two air inlet pipes 1. The U-shaped rod 7 descends to drive the pressure plate 10 to descend and press and fix the ventilation duct. The soft pad 11 can ensure the airtightness of the ventilation. The upper and lower ends of the two air inlet pipes 1 are fixedly connected to the mounting blocks 12. Each of the four mounting blocks 12 is provided with several mounting holes 13. The ventilation pipe is connected to the two air inlet pipes 1 by means of bolts, nuts and other tooling and the mounting holes 13 on each mounting block 12. The angle change of the ventilation duct is realized by the variable angle flexible hose 2.
[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A variable angle duct connector device, comprising two symmetrically arranged air inlet pipes (1), characterized in that, Four variable angle hoses (2) are connected between the two air inlet pipes (1), and each of the two air inlet pipes (1) is equipped with a moving mechanism.
2. The variable angle duct connector device according to claim 1, characterized in that, The moving mechanism includes two support plates (3) arranged vertically and vertically, and a threaded rod (4) is rotatably connected between the two support plates (3). A moving block (5) is threaded on the threaded rod (4), and a U-shaped rod (7) is fixedly connected to the moving block (5). A knob (6) is rotatably connected to the upper end of the upper support plate (3), and the knob (6) is coaxially fixedly connected to the threaded rod (4).
3. The variable angle duct connector device according to claim 2, characterized in that, Each of the two air inlet pipes (1) is fixedly connected to a slide rail (8), and each of the two slide rails (8) is slidably connected to an L-shaped sliding block (9). The two L-shaped sliding blocks (9) are respectively fixedly connected to two U-shaped rods (7).
4. A variable angle duct connector device according to claim 2, characterized in that, The lower ends of the two U-shaped rods (7) are fixedly connected to pressure plates (10), and soft pads (11) are fixedly fitted on the outer peripheral walls of the two air inlet pipes (1).
5. A variable angle duct connector device according to claim 1, characterized in that, The upper and lower ends of the two air inlet pipes (1) are fixedly connected to mounting blocks (12), and each of the four mounting blocks (12) is provided with several mounting holes (13).
6. A variable angle duct connector device according to claim 1, characterized in that, The variable angle hose (2) is made of high temperature resistant, fireproof and flame retardant nylon cloth lined with steel wire, and the air inlet pipe (1) is made of galvanized steel plate.