Low-friction anti-sticking air pipe lined with polytetrafluoroethylene

Abstract

The utility model relates to the technical field of air pipe production, and discloses a low-friction anti-sticking air pipe lined with polytetrafluoroethylene, which comprises a bent air pipe, straight air pipes are arranged on the left side and the front side of the bent air pipe, a first lining is fixedly connected to the bottom of the inner wall of the bent air pipe, a second lining is fixedly connected to the bottom of the inner wall of each straight air pipe, and the first lining and the second lining are arranged in parallel. The bent air pipe and the straight air pipe are directly provided with gaskets, two detectors are arranged at the bottom of the bent air pipe, the top of each detector is fixedly connected with an induction piece, and the top of each detector is fixedly connected with a fixing block. According to the utility model, the induction sheet and the detector are respectively arranged at the inlet and the outlet of the bent air pipe, whether the first lining in the pipe is damaged or not is judged by calculating the wind resistance of air flowing from the inlet to the outlet, and the device is fixed at the bottom of the bent air pipe through the fixing block, the fixing clamp and the screw; the problem that the process of detecting whether the polytetrafluoroethylene lining in the air pipe is damaged or not is tedious is solved.

Description

Technical Field

[0001] This utility model relates to the field of duct manufacturing technology, and in particular to a low-friction, non-stick duct lined with polytetrafluoroethylene. Background Technology

[0002] Air ducts transport treated air from air conditioning units and fan equipment to various areas of a building, such as rooms, workshops, and shopping malls, to meet the needs of ventilation, air conditioning, and exhaust. Just like blood vessels in the human body, they play the role of transporting "air blood" in the building's "respiratory system." In factories, workshops, and industrial sites, air ducts are used for ventilation, removal of harmful gases and dust, and regulation of temperature and humidity in the workshop.

[0003] Currently available low-friction, non-stick ducts lined with polytetrafluoroethylene (PTFE) typically refer to ducts made of metal or other materials with a layer of PTFE material applied to the inner wall using a special process. This gives the ducts low-friction and non-stick properties. However, during use, due to various external factors, the lining is prone to peeling off or wrinkling, affecting the normal use of the duct. Furthermore, due to the sealed nature of the duct, damage detection of the PTFE lining inside the duct usually needs to be carried out while the machine is stopped, and the detection process is cumbersome and inefficient. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a low-friction, non-stick duct lined with polytetrafluoroethylene (PTFE), aiming to improve the cumbersome process of detecting whether the PTFE lining inside the duct is damaged.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-friction, non-stick duct lined with polytetrafluoroethylene (PTFE), comprising a curved duct, with straight ducts provided on both the left and front sides of the curved duct. A first inner liner is fixedly connected to the bottom of the inner wall of the curved duct, and a second inner liner is fixedly connected to the bottom of the inner wall of the straight duct. A gasket is directly provided between the curved duct and the straight duct. Two detectors are provided at the bottom of the curved duct, with a sensing plate fixedly connected to the top of each detector. A fixing block is fixedly connected to the top of each detector, and a screw is provided on the right side of the fixing block. A fixing clip is slidably connected to the outer surface of the screw. A support plate is provided at the bottom of the straight duct, with two nuts rotatably connected to the bottom of the support plate. A steel cable is threadedly connected to the top of each nut. A quick-disassembly assembly is provided on the outer surface of the curved duct, which facilitates disassembly and repair after detecting internal damage to the duct.

[0006] Preferably, the quick-assembly assembly includes multiple first connectors, which are tightly fitted to the curved duct. A fixing groove is provided on the outer surface of the first connector. A second connector is provided on the right side of the first connector. A rotating groove is provided on the outer surface of the second connector. A connecting pipe is fixedly connected to the right side of the second connector. A spring is fixedly connected between the connecting pipe and the second connector. A fixing bolt is rotatably connected to the right side of the inner wall of the connecting pipe. A connecting block is fixedly connected to the left side of the fixing bolt.

[0007] Preferably, both the first liner and the second liner are made of polytetrafluoroethylene.

[0008] Preferably, the gasket fits tightly against both the curved and straight ducts.

[0009] Preferably, the left side of the screw passes through the fixing clamp and the curved air duct in sequence, and the left side of the screw is threadedly connected to the fixing block.

[0010] Preferably, the curved air duct is tightly fitted to both the fixing block and the fixing clamp.

[0011] Preferably, the top of the support plate is tightly fitted to the bottom of the straight air duct.

[0012] Preferably, the left side of the connecting block passes through the fixing groove and fits tightly with the first connecting member.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, by setting a sensor and a detector at the inlet and outlet of the curved air duct, the air resistance when the air flows from the inlet to the outlet is calculated to determine whether there is any damage to the first lining inside the duct. The device is fixed to the bottom of the curved air duct by fixing blocks, fixing clamps and screws, which solves the problem of the cumbersome process of detecting whether there is any damage to the polytetrafluoroethylene lining inside the air duct.

[0015] 2. In this utility model, by setting multiple first and second connecting parts between the curved and straight air ducts, the two are locked together by fixing bolts. When disassembling, it is only necessary to twist the fixing bolts to make the connecting block coincide with the fixing groove, and then pull it out from the fixing groove to complete the disassembly. This solves the problem of the cumbersome process of disassembling and repairing the air duct after detecting damage inside the air duct. Attached Figure Description

[0016] Figure 1 This is a perspective view of a low-friction, non-stick duct lined with polytetrafluoroethylene proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of a gasket for a low-friction, non-stick duct lined with polytetrafluoroethylene, as proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of a testing instrument for a low-friction, non-stick duct lined with polytetrafluoroethylene proposed in this utility model.

[0019] Figure 4 This is a schematic diagram of a fixing bolt for a low-friction, non-stick duct lined with polytetrafluoroethylene, as proposed in this utility model.

[0020] Legend:

[0021] 1. Curved duct; 2. Straight duct; 3. First inner lining; 4. Second inner lining; 5. Gasket; 6. Sensor plate; 7. Detector; 8. Fixing block; 9. Fixing clamp; 10. Screw; 11. Support plate; 12. Steel cable; 13. Nut; 14. First connector; 15. Second connector; 16. Fixing groove; 17. Fixing bolt; 18. Spring; 19. Connecting pipe; 20. Connecting block; 21. Rotating groove. Detailed Implementation

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

[0023] Reference Figures 1-3 This utility model provides an embodiment of a low-friction, non-stick duct lined with polytetrafluoroethylene, comprising a curved duct 1, with straight ducts 2 on both the left and front sides of the curved duct 1. A first inner liner 3 is fixedly connected to the bottom of the inner wall of the curved duct 1, and a second inner liner 4 is fixedly connected to the bottom of the inner wall of the straight duct 2. A gasket 5 is directly provided between the curved duct 1 and the straight duct 2. Two detectors 7 are provided at the bottom of the curved duct 1. A sensing plate 6 is fixedly connected to the top of the detectors 7. A fixing block 8 is fixedly connected to the top of the detectors 7. A screw 10 is provided on the right side of the fixing block 8. A fixing clip 9 is slidably connected to the outer surface of the screw 10. A support plate 11 is provided at the bottom of the straight duct 2. Two nuts 13 are rotatably connected to the bottom of the support plate 11. A steel cable 12 is threadedly connected to the top of the nuts 13. A quick-disassembly assembly is provided on the outer surface of the curved duct 1. The quick-disassembly assembly is used to facilitate disassembly and repair after detecting damage inside the duct.

[0024] Specifically, by installing a sensor 6 and a detector 7 at the inlet and outlet of the curved duct 1, the air resistance as the air flows from the inlet to the outlet is calculated to determine whether the first inner lining 3 inside the duct is damaged. The device is fixed to the bottom of the curved duct 1 by fixing block 8, fixing clamp 9 and screw 10, which solves the problem of the cumbersome process of detecting whether the polytetrafluoroethylene inner lining inside the duct is damaged.

[0025] Reference Figure 4 The quick-assembly assembly includes multiple first connectors 14, which are tightly fitted to the curved air duct 1. A fixing groove 16 is provided on the outer surface of the first connector 14. A second connector 15 is provided on the right side of the first connector 14. A rotating groove 21 is provided on the outer surface of the second connector 15. A connecting pipe 19 is fixedly connected to the right side of the second connector 15. A spring 18 is fixedly connected between the connecting pipe 19 and the second connector 15. A fixing bolt 17 is rotatably connected to the right side of the inner wall of the connecting pipe 19. A connecting block 20 is fixedly connected to the left side of the fixing bolt 17.

[0026] Specifically, by setting multiple first connectors 14 and second connectors 15 between the curved duct 1 and the straight duct 2, the two are engaged together by fixing bolts 17. During disassembly, it is only necessary to twist the fixing bolts 17 to make the connecting block 20 overlap with the fixing groove 16, and then pull it out from the fixing groove 16 to complete the disassembly. This solves the problem of the cumbersome process of disassembling and repairing the duct after detecting damage inside the duct.

[0027] Reference Figure 2 The first liner 3 and the second liner 4 are both made of polytetrafluoroethylene.

[0028] Specifically, polytetrafluoroethylene (PTFE) has an extremely low coefficient of friction. When fluid flows in the duct, its low friction characteristics reduce flow resistance, lower energy consumption, and improve conveying efficiency. It also has the lowest surface tension among solid materials and hardly adheres to any substances, making the duct less prone to scaling and clogging during use, thus ensuring the smooth operation of the ventilation system.

[0029] Reference Figure 2 The gasket 5 fits tightly against both the curved duct 1 and the straight duct 2.

[0030] Specifically, after the curved duct 1 and the straight duct 2 are installed, the gasket 5 between them is squeezed to fully fill the connection between them, preventing the duct from leaking during exhaust.

[0031] Reference Figure 3 The screw 10 passes through the fixing clip 9 and the curved air duct 1 on the left side in sequence, and the screw 10 is threadedly connected to the fixing block 8 on the left side.

[0032] Specifically, the sensor 6 and the detector 7 are fixed to the bottom of the curved air duct 1 by screws 10, clamps 9 and fixing blocks 8. The upper part of the sensor 6 extends into the duct to detect the pressure of the flowing air.

[0033] Reference Figure 3 The curved air duct 1 is tightly fitted with the fixing block 8 and the fixing clamp 9.

[0034] Specifically, since the curved air duct 1 is clamped by the fixing block 8 and the fixing clamp 9, when the curved air duct 1 needs to be disassembled for maintenance, the detector 7 moves with the curved air duct 1 to prevent loss or damage.

[0035] Reference Figure 3 The top of the support plate 11 is tightly fitted to the bottom of the straight air duct 2.

[0036] Specifically, when in use, the air duct is fixed in the working position by the support plate 11 and the steel cable 12. After the connection between the air ducts is disassembled, the support plate 11 and the air duct are removed by turning the nut 13.

[0037] Reference Figure 4 The left side of the connecting block 20 passes through the fixing groove 16 and fits tightly with the first connecting piece 14.

[0038] Specifically, during installation, the first connector 14 and the second connector 15 are aligned, the connecting block 20 passes through the fixing groove 16, and then the fixing bolt 17 is pressed to squeeze the spring 18, so that the connecting block 20 completely passes through the fixing groove 16. Then the fixing bolt 17 is rotated and released, and the connecting block 20 is retracted by the elastic force of the spring 18, locking the first connector 14.

[0039] Working principle: During daily use of the duct, when air passes through a section of the duct, a sensor 6 and a detector 7 are installed at the inlet and outlet of the duct respectively. By calculating the air resistance when the air flows from the inlet to the outlet, it is determined whether there is any damage to the first inner lining 3 inside the duct. The sensor 6 and the detector 7 are fixed to the bottom of the curved duct 1 by screws 10, clamps 9 and fixing blocks 8. The upper part of the sensor 6 extends into the duct. Since the curved duct 1 is clamped by the fixing blocks 8 and clamps 9, when the curved duct 1 needs to be disassembled for maintenance, the detector 7 moves with the curved duct 1 to prevent loss or damage.

[0040] When damage to the PTFE liner is detected, the fixing bolt 17 is turned to make the connecting block 20 overlap with the fixing groove 16, and it is pulled out of the fixing groove 16 to complete the disassembly, separating the first connector 14 and the second connector 15. After disassembling the multiple first connectors 14 and second connectors 15 set between the two air ducts, the air duct is disassembled and repaired. Then, during installation, the first connectors 14 and second connectors 15 are aligned, the connecting block 20 passes through the fixing groove 16, and then the fixing bolt 17 is pressed to squeeze the spring 18, so that the connecting block 20 completely passes through the fixing groove 16. Then, the fixing bolt 17 is rotated and released, and the connecting block 20 is retracted by the elastic force of the spring 18, locking the first connector 14, and the air duct is installed.

[0041] 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 low-friction, non-stick, polytetrafluoroethylene-lined air hose comprising a curved air hose (1), characterised in that: The left side and the front side of the elbow air pipe (1) are provided with straight air pipes (2), the inner wall bottom of the elbow air pipe (1) is fixedly connected with a first inner lining (3), the inner wall bottom of the straight air pipe (2) is fixedly connected with a second inner lining (4), the elbow air pipe (1) and the straight air pipe (2) are directly provided with a gasket (5), the bottom of the elbow air pipe (1) is provided with two detectors (7), the top of the detector (7) is fixedly connected with an induction sheet (6), the top of the detector (7) is fixedly connected with a fixed block (8), the right side of the fixed block (8) is provided with a screw (10), the outer surface of the screw (10) is slidably connected with a fixed clamp (9), the bottom of the straight air pipe (2) is provided with a supporting plate (11), the bottom of the supporting plate (11) is rotatably connected with two nuts (13), the top of the nut (13) is threadedly connected with a steel cable (12), the outer surface of the elbow air pipe (1) is provided with a quick disassembly and assembly component, the quick disassembly and assembly component is used for facilitating disassembly and maintenance after detecting that damage occurs in the air pipe.

2. A low-friction, non-stick, internally lined polytetrafluoroethylene windpipe according to claim 1, characterized in that: The quick disassembly and assembly component comprises a plurality of first connecting pieces (14), the first connecting piece (14) is tightly attached between the first connecting piece (14) and the elbow air pipe (1), a fixed groove (16) is formed in the outer surface of the first connecting piece (14), the right side of the first connecting piece (14) is provided with a second connecting piece (15), the outer surface of the second connecting piece (15) is provided with a rotating groove (21), the right side of the second connecting piece (15) is fixedly connected with a connecting pipe (19), the connecting pipe (19) and the second connecting piece (15) are fixedly connected with a spring (18) therebetween, the right side of the inner wall of the connecting pipe (19) is rotatably connected with a fixed bolt (17), and the left side of the fixed bolt (17) is fixedly connected with a connecting block (20).

3. A low-friction, non-stick, internally lined polytetrafluoroethylene windpipe according to claim 1, characterized in that: The first inner lining (3) and the second inner lining (4) are made of polytetrafluoroethylene.

4. A low-friction, non-stick, internally lined polytetrafluoroethylene windpipe according to claim 1, characterized in that: The gasket (5) is tightly attached between the gasket (5) and the elbow air pipe (1) and the straight air pipe (2).

5. A low-friction, non-stick, internally lined polytetrafluoroethylene windpipe according to claim 1, characterized in that: The left side of the screw (10) penetrates the fixed clamp (9) and the elbow air pipe (1) in sequence, and the left side of the screw (10) is threadedly connected with the fixed block (8).

6. A low-friction, non-stick, internally lined polytetrafluoroethylene windpipe according to claim 1, characterized in that: The elbow air pipe (1) is tightly attached between the elbow air pipe (1) and the fixed block (8) and the fixed clamp (9).

7. A low-friction, non-stick, internally lined polytetrafluoroethylene windpipe according to claim 1, characterized in that: The top of the supporting plate (11) is tightly attached between the top of the supporting plate (11) and the bottom of the straight air pipe (2).

8. A low-friction, non-stick, internally lined polytetrafluoroethylene windpipe according to claim 2, characterized in that: The left side of the connecting block (20) penetrates the fixed groove (16) and is tightly attached between the connecting block (20) and the first connecting piece (14).

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