Axial flow fan with shielding cover

Abstract

The utility model relates to the technical field of axial flow fans, and discloses an axial flow fan with a shielding cover, which comprises a bottom plate, two supporting legs are fixedly connected to the rear side of the top of the bottom plate, supporting columns are fixedly connected to the tops of the two supporting legs, a shell is fixedly connected to the tops of the two supporting columns, a fan is arranged in the middle of the interior of the shell, and the shielding cover is arranged in the shell. A mounting frame is slidably connected to the front side of the shell, a plurality of louver blades are rotatably connected to the inner side of the mounting frame, a motor is fixedly connected to the edge of the top of the bottom plate, an eccentric wheel is fixedly connected to the output end of the motor, and a connecting shaft is rotatably connected to the edge of the right side of the eccentric wheel. According to the axial flow fan, the motor drives the eccentric wheel to rotate to drive the connecting shaft to rotate, then the connecting block drives the sliding rod to move upwards, then the louver blades are driven to overturn upwards, dust and tiny particles are prevented from entering the axial flow fan, abrasion and faults caused by dust accumulation are reduced, and the service life of the axial flow fan is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow fans, in particular to an axial flow fan with a shielding cover. Background Art

[0002] An axial flow fan is a mechanical device used to move air or gas along its axis. Its working principle is to generate airflow through rotating blades or propellers, so that the air or gas moves along the axis and increases the kinetic energy of the gas in the process. In order to protect personnel safety, prevent external objects from entering, and reduce noise, it is necessary to equip the axial flow fan with a shielding cover.

[0003] In the prior art, the shielding cover of the axial flow fan is generally made of metal wire mesh. This metal wire mesh shielding cover can indeed protect the safety of personnel to a certain extent when the axial flow fan is working, preventing them from directly contacting the high-speed rotating blades, but it cannot completely prevent dust and tiny particles from entering the interior of the axial flow fan. The long-term accumulation of dust may accelerate the wear of the fan components and thus shorten the service life of the equipment. Therefore, an axial flow fan with a shielding cover is proposed to solve the above problem. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides an axial flow fan with a shielding cover, aiming to improve the problem in the prior art that the shielding cover cannot prevent dust from entering the interior of the axial flow fan.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an axial flow fan with a shielding cover, comprising a base plate, two supporting feet are fixedly connected to the rear side of the top of the base plate, the tops of the two supporting feet are fixedly connected to supporting columns, the tops of the two supporting columns are fixedly connected to an outer shell, a fan is arranged in the middle of the inner part of the outer shell, a mounting frame is slidably connected to the front side of the outer shell, a plurality of louvers are rotatably connected to the inner side of the mounting frame, a motor is fixedly connected to the top edge of the base plate, an eccentric wheel is fixedly connected to the output end of the motor, a connecting shaft is rotatably connected to the right edge of the eccentric wheel, an end of the connecting shaft away from the eccentric wheel is rotatably connected to a connecting block, a sliding rod is fixedly connected to the top of the connecting block, a fixing seat is fixedly connected to the rear side of the louver, an end of the fixing seat away from the louver is hingedly connected to the inside of the sliding rod, and fixing components are arranged on both sides of the left and right sides of the outer shell.

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

[0007] The fixing assembly includes a frame body 1, the outer side of the frame body 1 is fixedly connected to the outer wall of the shell, the interior of the frame body 1 is slidably connected with a pull rod, one side of the outside of the pull rod is fixedly connected to a baffle, the other side of the outside of the pull rod is sleeved with a spring, the top of the frame body 1 is fixedly connected to a frame body 2, and a blocking block is arranged on the top of the baffle.

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

[0009] One end of the pull rod away from the shell is fixedly connected with a handle.

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

[0011] The outer side of the slide bar is slidably connected to the inside of the shell.

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

[0013] The outer side of the baffle is slidably connected to the interior of the frame.

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

[0015] One end of the spring is fixedly connected to the middle of the baffle, and the other end of the spring is fixedly connected to an inner wall of the frame.

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

[0017] The outer side of the blocking block is slidably connected to the interior of the second frame, and the bottom of the blocking block is slidably connected to the interior of the first frame.

[0018] As a further description of the above technical solution:

[0019] The pull rod passes through the shell and is inserted into the installation frame.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, the eccentric wheel is driven by the motor to rotate, which drives the connecting shaft to rotate, and then drives the slide bar to move upward through the connecting block, thereby driving the louver blades to flip upward, thereby preventing dust and tiny particles from entering the interior of the axial flow fan, reducing wear and failure caused by dust accumulation, and increasing the service life of the equipment.

[0022] 2. In the utility model, by pulling the pull rod to drive the baffle to squeeze the spring until the pull rod is completely separated from the interior of the installation frame, the louver blades can be quickly disassembled, thereby facilitating regular cleaning of the louver blades, thereby ensuring that the shielding cover always maintains a good working condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional schematic diagram of an axial flow fan with a shielding cover proposed by the utility model;

[0024] Figure 2 This is a structural schematic diagram of a louver blade of an axial flow fan with a shielding cover proposed by the utility model;

[0025] Figure 3 This is a schematic structural diagram of a spring of an axial flow fan with a shielding cover proposed by the utility model;

[0026] Figure 4 The utility model provides an axial flow fan with a shielding cover. Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0027] Legend:

[0028] 1. Base plate; 2. Casing; 3. Fan; 4. Mounting frame; 5. Louver; 6. Motor; 7. Eccentric wheel; 8. Connecting shaft; 9. Connecting block; 10. Sliding rod; 11. Fixed seat; 12. Frame 1; 13. Pull rod; 14. Baffle; 15. Spring; 16. Frame 2; 17. Blocking block; 18. Handle; 19. Support column; 20. Support foot. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Reference Figure 1 , Figure 2 and Figure 4The utility model provides an embodiment: an axial flow fan with a shielding cover, including a bottom plate 1, two supporting feet 20 are fixedly connected to the top rear side of the bottom plate 1, the tops of the two supporting feet 20 are fixedly connected to support columns 19, the tops of the two support columns 19 are fixedly connected to a shell 2, a fan 3 is arranged in the middle of the shell 2, a mounting frame 4 is slidably connected to the front side of the shell 2, a plurality of louvers 5 are rotatably connected to the inner side of the mounting frame 4, a motor 6 is fixedly connected to the top edge of the bottom plate 1, an eccentric wheel 7 is fixedly connected to the output end of the motor 6, a connecting shaft 8 is rotatably connected to the right edge of the eccentric wheel 7, a connecting block 9 is rotatably connected to the end of the connecting shaft 8 away from the eccentric wheel 7, a sliding rod 10 is fixedly connected to the top of the connecting block 9, a fixing seat 11 is fixedly connected to the rear side of the louver 5, and the fixing seat 11 is hinged to the inside of the sliding rod 10 at one end away from the louver 5, fixing components are arranged on the left and right sides of the shell 2, and the outer side of the sliding rod 10 is slidably connected to the inside of the shell 2.

[0031] Specifically, the bottom plate 1 is the supporting base of the axial flow fan, bearing the weight of the entire device. The outer shell 2 is the outer protective cover of the axial flow fan, protecting the internal components from the external environment such as dust, moisture, etc. The fan 3 is the core component of the axial flow fan, responsible for generating the power of air flow. The mounting frame 4 is used to fix the louver 5 to ensure its stability and reliability during operation. It is closely connected with the outer shell 2 to form a complete air inlet structure. The louver 5 is used as an adjusting component of the air inlet, and the degree of opening and closing can be adjusted as needed. When the fan 3 is not in use, The shutter blades 5 can be completely closed to prevent dust and debris from entering the fan. When the fan 3 is running, the shutter blades 5 can automatically adjust the opening and closing angle according to the demand for air flow to achieve the best ventilation effect. The motor 6 is the power source for driving the eccentric wheel 7. The eccentric wheel 7 is driven by electricity to rotate continuously. The eccentric wheel 7, the connecting shaft 8, the connecting block 9, and the sliding rod 10 together constitute the driving mechanism of the shutter blades 5. When the motor 6 rotates, the eccentric wheel 7 will produce periodic movement, and the connecting block 9 and the sliding rod 10 will move up and down through the connecting shaft 8. The movement of the sliding rod 10 will push the shutter blades 5 to open and close, and realize the automatic adjustment of the air inlet. The fixed seat 11 is used to support and fix the sliding rod 10 to ensure that it moves up and down stably. The support column 19 and the support foot 20 together constitute the support structure of the base plate 1, which can ensure the stability of the fan 3 during operation.

[0032] Reference Figure 1 and Figure 3The fixing component includes a frame body 12, the outer side of the frame body 12 is fixedly connected to the outer wall of the shell 2, the frame body 12 is slidably connected with a pull rod 13, one side of the outer side of the pull rod 13 is fixedly connected to a baffle 14, and the other side of the outer side of the pull rod 13 is sleeved with a spring 15, the top of the frame body 12 is fixedly connected to a frame body 2 16, and a blocking block 17 is arranged on the top of the baffle 14, and a handle 18 is fixedly connected to the end of the pull rod 13 away from the shell 2, the outer side of the baffle 14 is slidably connected to the inside of the frame body 12, one end of the spring 15 is fixedly connected to the middle part of the baffle 14, and the other end of the spring 15 is fixedly connected to the inner wall of the frame body 12, one end of the spring 15 is fixedly connected to the middle part of the baffle 14, and the other end of the spring 15 is fixedly connected to the inner wall of the frame body 12. The outer side of the blocking block 17 is slidably connected to the inside of the frame body 2 16, and the bottom of the blocking block 17 is slidably connected to the inside of the frame body 12, and the pull rod 13 passes through the shell 2 and is inserted into the inside of the mounting frame 4.

[0033] Specifically, the frame 12 and the frame 2 16 together form the installation space of the pull rod 13 and the baffle 14, ensuring that they can remain stable during movement. The frame 2 16 is also provided with a track for the blocking block 17 to slide, so that the blocking block 17 can slide smoothly. The pull rod 13, the baffle 14, the spring 15, and the blocking block 17 together constitute the locking and unlocking mechanism of the shutter blade 5. When the shutter blade 5 needs to be cleaned, the worker can pull the pull rod 13 to move the baffle 14 outward and The spring 15 is compressed, so that the blocking block 17 slides into the interior of the frame 12. The handle 18 is designed to facilitate the worker's operation. The worker can hold the handle to pull the pull rod 13, making the operation easier and more convenient. When the pull rod 13 is completely separated from the installation frame 4, the louver 5 can be removed as a whole. During installation, the worker only needs to pull the blocking block 17 out of the frame 12, and then push the pull rod 13 inward to reset the baffle 14 and compress the spring 15, and finally insert the pull rod 13 tightly into the installation frame 4.

[0034] Working principle: when the equipment is not in use, in order to prevent dust from entering the interior of the equipment, the motor 6 is started to drive the eccentric wheel 7 to rotate. The rotation of the eccentric wheel 7 also drives the connecting shaft 8 to rotate, driving the connecting block 9 to push the sliding rod 10 upwards, thereby driving the louver 5 to flip upwards and close the air inlet, preventing dust from entering the interior of the axial flow fan from the air inlet. When the louver 5 needs to be cleaned, the pull rod 13 is pulled outwards to drive the baffle 14 to move synchronously, thereby compressing the spring 15, so that the blocking block 14 slides into the interior of the frame 12, thereby preventing the baffle 17 from moving, until the pull rod 13 is completely separated from the interior of the mounting frame 4. At this time, the mounting frame 4 and the louver 5 can be removed as a whole. After cleaning is completed, they need to be installed. The mounting frame 4 and the louver 5 are placed in the housing 2, and the blocking block 17 is pulled out of the frame 12. At this time, the pull rod 13 is pushed inwards, driving the baffle 14 to move synchronously, causing the spring 15 to reset, until the pull rod 13 is tightly inserted into the interior of the mounting frame 4 to complete its installation.

[0035] 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 axial flow fan with a shielding cover, comprising a bottom plate (1), characterized in that: The rear side of the top of the bottom plate (1) is fixedly connected to two supporting feet (20), the tops of the two supporting feet (20) are fixedly connected to supporting columns (19), the tops of the two supporting columns (19) are fixedly connected to a housing (2), a fan (3) is arranged in the middle of the housing (2), a mounting frame (4) is slidably connected to the front side of the housing (2), a plurality of louvers (5) are rotatably connected to the inside of the mounting frame (4), a motor (6) is fixedly connected to the top edge of the bottom plate (1), and the motor (6) outputs The outlet end is fixedly connected to an eccentric wheel (7), the right edge of the eccentric wheel (7) is rotatably connected to a connecting shaft (8), the end of the connecting shaft (8) away from the eccentric wheel (7) is rotatably connected to a connecting block (9), the top of the connecting block (9) is fixedly connected to a sliding rod (10), the rear side of the louver (5) is fixedly connected to a fixing seat (11), the end of the fixing seat (11) away from the louver (5) is hingedly connected to the inside of the sliding rod (10), and fixing components are arranged on both the left and right sides of the housing (2).

2. The axial flow fan with a shielding cover according to claim 1, characterized in that: The fixing assembly comprises a frame body (12), the outer side of the frame body (12) is fixedly connected to the outer wall of the shell (2), the interior of the frame body (12) is slidably connected with a pull rod (13), one side of the outside of the pull rod (13) is fixedly connected with a baffle (14), the other side of the outside of the pull rod (13) is sleeved with a spring (15), the top of the frame body (12) is fixedly connected with a frame body (16), and the top of the baffle (14) is provided with a blocking block (17).

3. The axial flow fan with a shielding cover according to claim 2, characterized in that: One end of the pull rod (13) away from the housing (2) is fixedly connected to a handle (18).

4. The axial flow fan with a shielding cover according to claim 1, characterized in that: The outer side of the sliding rod (10) is slidably connected to the inside of the housing (2).

5. The axial flow fan with a shielding cover according to claim 2, characterized in that: The outer side of the baffle (14) is slidably connected to the interior of the frame body (12).

6. The axial flow fan with a shielding cover according to claim 2, characterized in that: One end of the spring (15) is fixedly connected to the middle of the baffle (14), and the other end of the spring (15) is fixedly connected to the inner wall of the frame (12).

7. The axial flow fan with a shielding cover according to claim 2, characterized in that: The outer side of the blocking block (17) is slidably connected to the inside of the second frame (16), and the bottom of the blocking block (17) is slidably connected to the inside of the first frame (12).

8. The axial flow fan with a shielding cover according to claim 2, characterized in that: The pull rod (13) passes through the outer shell (2) and is inserted into the interior of the installation frame (4).

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