Exhaust fan capable of being quickly connected with exhaust pipe

Abstract

The utility model relates to the technical field of exhaust fans, in particular to an exhaust fan capable of being quickly connected with an exhaust pipe, which comprises a pipeline, four first moving grooves are arranged on the outer surface of the pipeline, four limiting grooves are arranged on the outer surface of the pipeline, and the first moving grooves are communicated with the limiting grooves. A plurality of spring grooves are formed in the outer surface of the pipeline, a plurality of telescopic springs are fixedly connected to the surface of the inner wall of the rear side of each spring groove, a limiting block is fixedly connected to the other end of each telescopic spring, and the outer surface of the pipeline is sleeved with an exhaust fan pipe. The inner surface of the exhaust fan pipe is fixedly connected with a clamping pin. The exhaust fan fixing device is reasonable in structure, a worker can more quickly mount and dismount an exhaust fan pipe and a pipeline, the time for mounting and dismounting the exhaust fan by the worker is greatly saved, and the working efficiency of the worker is favorably improved.

Description

Technical Field

[0001] The utility model relates to the field of exhaust fans, in particular to an exhaust fan which can be quickly connected to an exhaust pipe. Background Art

[0002] Exhaust fan, also known as ventilation fan, negative pressure fan, negative pressure fan, etc., is a type of air conditioning appliance. It drives the airflow by rotating the fan blades through the motor to exchange the indoor and outdoor air. The main purpose of the exhaust fan is to remove the dirty air in the room and adjust the temperature and humidity. It is widely used in homes and public places.

[0003] When installing existing exhaust fans, flanges and bolts are often used to fix the exhaust fans on pipes. The bolt connection method causes a lot of time to be wasted on twisting the bolts during installation or removal, which greatly wastes the workers' working time and is not conducive to improving work efficiency. Summary of the invention

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an exhaust fan which can be quickly connected to an exhaust pipe.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an exhaust fan that can be quickly connected to an exhaust duct comprises a pipe, the outer surface of the pipe is provided with a first movable groove, the number of the first movable grooves is four, the outer surface of the pipe is provided with a limiting groove, the number of the limiting grooves is four, the outer surface of the pipe is provided with a spring groove, the number of the spring grooves is multiple, the rear inner wall surface of the spring groove is fixedly connected with a telescopic spring, the number of the telescopic springs is multiple, the other end of the telescopic spring is fixedly connected with a limiting block, the outer surface of the pipe is provided with an exhaust fan pipe, and the inner surface of the exhaust fan pipe is fixedly connected with a bayonet.

[0006] As a further description of the above technical solution:

[0007] The first movable groove is communicated with the limiting groove, the spring groove is communicated with the first movable groove, and the bayonet is located inside the limiting groove.

[0008] As a further description of the above technical solution:

[0009] A second movable groove is formed on the outer surface of the pipe, the second movable groove is communicated with the spring groove, a movable block is fixedly connected to the outer surface of the limit block, and the movable block is located inside the second movable groove.

[0010] As a further description of the above technical solution:

[0011] The inner surface of the exhaust fan tube is fixedly connected with a connecting ring, the rear side surface of the connecting ring is fixedly connected with an inner tube, and the inner tube is located inside the pipeline.

[0012] As a further description of the above technical solution:

[0013] The inner surface of the exhaust fan tube is fixedly connected with a connecting strip, the number of the connecting strips is four, and the other end of the connecting strip is fixedly connected with a motor.

[0014] As a further description of the above technical solution:

[0015] The output end of the motor is fixedly connected to a rotating shaft, the outer surface of the rotating shaft is fixedly connected to fan blades, and the number of the fan blades is four.

[0016] As a further description of the above technical solution:

[0017] A protective strip is fixedly connected to the inner surface of the exhaust fan tube, and the number of the protective strips is multiple. The other end of the protective strip is fixedly connected to a connecting plate.

[0018] The utility model has the following beneficial effects:

[0019] 1. Compared with the prior art, the exhaust fan that can be quickly connected to the exhaust duct, through the bayonet pin, the first movable groove, the exhaust fan pipe, the limit block, the telescopic spring, the pipe, the connecting ring, the limit groove and the moving block, when the exhaust fan needs to be installed, the bayonet pin is aligned with the position of the first movable groove, and then the exhaust fan pipe is pushed along the first movable groove, and then the limit block is squeezed, driving the limit block to move toward the position close to the telescopic spring, the telescopic spring contracts, and when it moves to one end of the pipe and is blocked by the connecting ring, the bayonet pin cannot continue to move, and then the exhaust fan pipe is rotated, so that the bayonet pin moves to the inside of the limit groove, and then the telescopic spring rebounds, driving the limit block to reset, at this time the bayonet pin is stuck, and the exhaust fan is installed. When the exhaust fan needs to be removed for maintenance, the moving block is toggled, thereby driving the moving block to The exhaust fan is quickly connected to the exhaust duct so that workers can install and disassemble the exhaust fan duct and the exhaust fan duct can be quickly connected to the exhaust duct, which greatly saves the time of workers in installing and disassembling the exhaust fan and is conducive to improving the work efficiency of workers.

[0020] 2. Compared with the prior art, the exhaust fan that can be quickly connected to the exhaust duct can allow the wind from the exhaust fan to directly enter the duct through the inner tube, the duct and the exhaust fan tube and the inner tube, and will not flow to the outside through the gap between the exhaust fan tube and the duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the exhaust fan that can be quickly connected to the exhaust duct proposed by the utility model;

[0022] Figure 2 This is a cross-sectional view of the overall structure of the exhaust fan that can be quickly connected to the exhaust duct proposed by the utility model;

[0023] Figure 3 This is a cross-sectional view of the pipe structure of the exhaust fan that can be quickly connected to the exhaust pipe proposed by the utility model;

[0024] Figure 4 This is a cross-sectional view from another perspective of the pipe structure of the exhaust fan that can be quickly connected to the exhaust pipe proposed by the utility model;

[0025] Figure 5 This is a cross-sectional view of the exhaust fan tube structure of the exhaust fan that can be quickly connected to the exhaust duct proposed by the utility model.

[0026] Legend:

[0027] 1. Pipe; 2. First moving groove; 3. Limiting groove; 4. Spring groove; 5. Telescopic spring; 6. Limiting block; 7. Moving block; 8. Second moving groove; 9. Exhaust fan pipe; 10. Bayonet; 11. Connecting ring; 12. Inner tube; 13. Connecting strip; 14. Motor; 15. Rotating shaft; 16. Fan blades; 17. Protective strip; 18. Connecting plate. DETAILED DESCRIPTION

[0028] Reference Figure 1-5The exhaust fan that can be quickly connected to the exhaust duct provided by the utility model comprises a pipe 1, and a first movable groove 2 is opened on the outer surface of the pipe 1. When the exhaust fan needs to be installed, the bayonet 10 is aligned with the position of the first movable groove 2, and then the exhaust fan pipe 9 is pushed along the first movable groove 2, and then the limiting block 6 is squeezed, driving the limiting block 6 to move toward the position close to the telescopic spring 5, and the telescopic spring 5 contracts. When it moves to one end of the pipe 1 and is blocked by the connecting ring 11, the bayonet 10 cannot continue to move, and then the exhaust fan pipe 9 is rotated, so that the bayonet 10 moves to the inside of the limiting groove 3, and then the telescopic spring 5 rebounds, driving the limiting block 6 to reset. At this time, the bayonet 10 is stuck, and the exhaust fan is installed. When the exhaust fan needs to be removed for maintenance, the moving block 7 is toggled, and then Drive the moving block 7 to move in the direction away from the exhaust fan pipe 9, and then drive the limiting block 6 to move in the direction away from the exhaust fan pipe 9, and then rotate the exhaust fan pipe 9 so that the pin 10 disengages from the limiting slot 3, and then the exhaust fan pipe 9 can be removed. At this time, the exhaust fan is disassembled. The number of the first moving slots 2 is four, and the outer surface of the pipe 1 is provided with limiting slots 3, and the number of limiting slots 3 is four. The outer surface of the pipe 1 is provided with spring slots 4, and the number of spring slots 4 is multiple. The inner wall surface of the rear side of the spring slot 4 is fixedly connected with a telescopic spring 5, and the number of telescopic springs 5 ​​is multiple. The other end of the telescopic spring 5 is fixedly connected to the limiting block 6, and the outer surface of the pipe 1 is provided with the exhaust fan pipe 9, and the inner surface of the exhaust fan pipe 9 is fixedly connected with the pin 10.

[0029] The first movable groove 2 is connected with the limiting groove 3, the spring groove 4 is connected with the first movable groove 2, the bayonet 10 is located inside the limiting groove 3, the outer surface of the pipe 1 is provided with a second movable groove 8, the second movable groove 8 is connected with the spring groove 4, the outer surface of the limiting block 6 is fixedly connected with a movable block 7, the movable block 7 is located inside the second movable groove 8, the inner surface of the exhaust fan pipe 9 is fixedly connected with a connecting ring 11, the rear side of the connecting ring 11 is fixedly connected with an inner pipe 12, the inner pipe 12 can make the wind of the exhaust fan directly enter the pipe 1, and will not be discharged from the exhaust fan The exhaust fan tube 9 flows to the outside through the gap between the exhaust fan tube 9 and the pipeline 1, the inner tube 12 is located inside the pipeline 1, the inner surface of the exhaust fan tube 9 is fixedly connected with a connecting strip 13, the number of the connecting strips 13 is four, the other end of the connecting strip 13 is fixedly connected with a motor 14, the output end of the motor 14 is fixedly connected with a rotating shaft 15, the outer surface of the rotating shaft 15 is fixedly connected with fan blades 16, the number of the fan blades 16 is four, the inner surface of the exhaust fan tube 9 is fixedly connected with a protective strip 17, the number of the protective strips 17 is multiple, and the other end of the protective strip 17 is fixedly connected with a connecting plate 18.

[0030] Working principle: when the exhaust fan needs to be installed, the pin 10 is aligned with the position of the first movable groove 2, and then the exhaust fan pipe 9 is pushed along the first movable groove 2, and then the limit block 6 is squeezed, driving the limit block 6 to move toward the position close to the telescopic spring 5, and the telescopic spring 5 contracts. When it moves to one end of the pipe 1 and is blocked by the connecting ring 11, the pin 10 cannot continue to move, and then the exhaust fan pipe 9 is rotated, so that the pin 10 moves to the inside of the limit groove 3, and then the telescopic spring 5 rebounds, driving the limit block 6 to reset. At this time, the pin 10 is stuck, and the exhaust fan is installed. When the exhaust fan needs to be removed for maintenance, the moving block 7 is moved, and then the moving block 7 is driven to move in the direction away from the exhaust fan pipe 9, and then the limit block 6 is driven to move in the direction away from the exhaust fan pipe 9, and then the exhaust fan pipe 9 is rotated, so that the pin 10 is disengaged from the limit groove 3, and then the exhaust fan pipe 9 can be removed. At this time, the exhaust fan is disassembled.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An exhaust fan capable of being quickly connected to an exhaust duct comprises a duct (1), characterized in that: The outer surface of the pipe (1) is provided with a first movable groove (2), the number of which is four; the outer surface of the pipe (1) is provided with a limit groove (3), the number of which is four; the outer surface of the pipe (1) is provided with a spring groove (4), the number of which is plural; the rear inner wall surface of the spring groove (4) is fixedly connected with a telescopic spring (5), the number of which is plural; the other end of the telescopic spring (5) is fixedly connected with a limit block (6); the outer surface of the pipe (1) is sleeved with an exhaust fan pipe (9), the inner surface of the exhaust fan pipe (9) is fixedly connected with a bayonet (10).

2. The exhaust fan capable of being quickly connected to an exhaust duct according to claim 1, characterized in that: The first movable groove (2) is connected to the limiting groove (3), the spring groove (4) is connected to the first movable groove (2), and the bayonet (10) is located inside the limiting groove (3).

3. The exhaust fan capable of being quickly connected to an exhaust duct according to claim 1, characterized in that: The outer surface of the pipe (1) is provided with a second movable groove (8), the second movable groove (8) is connected to the spring groove (4), the outer surface of the limit block (6) is fixedly connected with a movable block (7), and the movable block (7) is located inside the second movable groove (8).

4. The exhaust fan capable of being quickly connected to an exhaust duct according to claim 1, characterized in that: A connecting ring (11) is fixedly connected to the inner surface of the exhaust fan tube (9), an inner tube (12) is fixedly connected to the rear side of the connecting ring (11), and the inner tube (12) is located inside the pipeline (1).

5. The exhaust fan capable of being quickly connected to an exhaust duct according to claim 1, characterized in that: The inner surface of the exhaust fan tube (9) is fixedly connected with a connecting strip (13), the number of the connecting strips (13) is four, and the other end of the connecting strip (13) is fixedly connected with a motor (14).

6. The exhaust fan capable of being quickly connected to an exhaust duct according to claim 5, characterized in that: The output end of the motor (14) is fixedly connected to a rotating shaft (15), and the outer surface of the rotating shaft (15) is fixedly connected to fan blades (16), and the number of the fan blades (16) is four.

7. The exhaust fan capable of being quickly connected to an exhaust duct according to claim 1, characterized in that: A protective strip (17) is fixedly connected to the inner surface of the exhaust fan tube (9), the number of the protective strips (17) is plural, and the other end of the protective strip (17) is fixedly connected to a connecting plate (18).

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