Negative pressure fan convenient to disassemble

Abstract

The utility model relates to the field of negative pressure fans, and discloses a conveniently-detached negative pressure fan which comprises a main frame body, a supporting frame is fixedly connected to the inner wall of the main frame body, a fan is rotatably connected to the side surface of the supporting frame, an air opening is fixedly connected to the side surface of the main frame body, and two fixing blocks are fixedly connected to the outer surface of the air opening. The side surface of the air opening is connected with a protective net plate in a clamped mode, the outer surface of the protective net plate is fixedly connected with two guide blocks, the guide blocks and the fixing blocks are oppositely clamped, the surfaces of the two sides of the main frame body are fixedly connected with supporting plates, and a plurality of mounting holes are formed in the side surfaces of the supporting plates in a penetrating mode. After the device is used for a period of time, the protective screen plate can be quickly disassembled, so that the protective screen plate and internal parts of the device can be conveniently maintained and cleaned, the operation efficiency of the device can be improved, and the service life of the device can be prolonged.

Description

Technical Field

[0001] The present application relates to the field of negative pressure fans, and in particular to a negative pressure fan that is easy to disassemble. Background Art

[0002] Negative pressure fans use the cooling principle of air convection and negative pressure ventilation. They naturally draw in fresh air from the door or window opposite the installation location, and quickly force the hot and stuffy air in the room to the outside. This machine can improve any poor ventilation problem, with a cooling and ventilation effect of up to 90%-97%.

[0003] Compressed air blowers are widely used in industrial and commercial buildings to remove indoor polluted air and achieve air circulation and ventilation. Traditional negative pressure fans are usually equipped with fixed protective covers to protect the fan blades from external damage and prevent accidental contact. However, existing protective covers are mostly installed using screws or welding. This makes the removal process cumbersome and time-consuming when cleaning, maintenance, or replacing fan parts, increasing maintenance costs. The difficulty in disassembly may delay the discovery and resolution of faults, thus affecting the efficiency and life of the fan.

[0004] In view of the above-mentioned related technologies, the inventor believes that the negative pressure fan has the defect of being difficult to disassemble quickly;

[0005] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Utility Model Content

[0006] In order to solve the problem that the negative pressure fan is difficult to disassemble quickly, the present application provides a negative pressure fan that is easy to disassemble.

[0007] The present application provides a conveniently disassembled negative pressure fan adopting the following technical solution:

[0008] A negative pressure fan that is easy to disassemble comprises a main frame, an inner wall of the main frame is fixedly connected to a support frame, a side surface of the support frame is rotatably connected to a fan, the side surface of the main frame is fixedly connected to an air outlet, an outer surface of the air outlet is fixedly connected to two fixed blocks, the side surface of the air outlet is snap-connected to a protective mesh plate, an outer surface of the protective mesh plate is fixedly connected to two guide blocks, and the guide blocks are relatively snap-connected to the fixed blocks.

[0009] Preferably, both side surfaces of the main frame are fixedly connected with support plates, and a plurality of mounting holes are formed through the side surfaces of the support plates.

[0010] Preferably, a guide groove is provided on the side surface of the fixing block, and the guide block slides relative to the inner wall of the guide groove.

[0011] Preferably, a snap-fit ​​groove is provided on the side surface of the air outlet, a plastic snap-fit ​​ring is fixedly connected to the side surface of the protective mesh plate, and the plastic snap-fit ​​ring can be snap-fitted to the inner wall of the snap-fit ​​groove.

[0012] Preferably, a through hole is provided on the side surface of the guide block, a latch sleeve is fixedly connected to the side surface of the fixed block, the inner wall of the latch sleeve is elastically slidably connected to a positioning pin through a spring, and the positioning pin can be engaged with the inner wall of the through hole.

[0013] In summary, this application has the following beneficial technical effects:

[0014] By setting a fixing block, a guide block, a guide groove, a snap groove, a plastic snap ring, a through hole, a pin sleeve, and a positioning pin for use together, the protective mesh plate can be quickly disassembled after a period of use, thereby facilitating the maintenance and cleaning of the protective mesh plate and internal components of the device, thereby improving the operating efficiency and service life of the device; compared with the existing technology, it has the effect of being able to be disassembled quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall schematic diagram of an embodiment of the application;

[0016] Figure 2 It is a cross-sectional structural diagram of an embodiment of the application;

[0017] Figure 3 yes Figure 1 A magnified schematic diagram of point A;

[0018] Figure 4 yes Figure 2 Enlarged schematic diagram of point B.

[0019] Explanation of the accompanying reference numerals: 1. Main frame; 2. Support frame; 3. Fan; 4. Air outlet; 5. Fixing block; 6. Protective mesh plate; 7. Guide block; 8. Support plate; 9. Mounting hole; 10. Guide groove; 11. Snap-fit ​​groove; 12. Plastic snap-fit ​​ring; 13. Through hole; 14. Pin sleeve; 15. Positioning pin. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-4 This application is described in further detail.

[0021] The embodiment of the present application discloses a negative pressure fan that is easy to disassemble. Figure 1 、 Figure 2 、 Figure 3, including a main frame 1, and a rectangular support plate 8 is fixedly connected to both sides of the main frame 1, and a plurality of mounting holes 9 are opened on the side surface of the support plate 8 so that the screws can be screwed through the mounting holes 9 and then screwed into the wall, thereby fixing the device in a specified position, and a cross-shaped plate-shaped support frame 2 is fixedly connected to the inner wall of the main frame 1, and a fan 3 is rotatably connected to the side surface of the support frame 2 so that negative pressure is formed by the rotation of the fan 3, thereby forming indoor and outdoor air convection, thereby achieving air circulation and ventilation, and secondly, a ring is fixedly connected to the side surface of the main frame 1 The air outlet 4 is in the form of an L-shaped plate, and two rectangular fixing blocks 5 are fixedly connected to the outer surface of the air outlet 4. A protective mesh plate 6 is snap-fitted to the side surface of the air outlet 4 so that the fan 3 can be protected by the protective mesh plate 6 to prevent debris from blowing onto the fan 3 and affecting the normal operation of the device. Two L-shaped plate-shaped guide blocks 7 are fixedly connected to the outer surface of the protective mesh plate 6, and the guide blocks 7 are relatively snap-fitted with the fixed blocks 5 so that after a period of use, the guide blocks 7 and the protective mesh plate 6 can be quickly disassembled, thereby facilitating the maintenance and cleaning of the interior of the device, thereby maintaining the normal operation of the device.

[0022] Reference Figure 3 、 Figure 4 A groove-shaped through hole 13 is opened on the side surface of the guide block 7, and a latch sleeve 14 is fixedly connected to the side surface of the fixed block 5. The inner wall of the latch sleeve 14 is elastically slidably connected to a block-shaped positioning pin 15 through a spring, and the positioning pin 15 can be engaged with the inner wall of the through hole 13, so that the positioning pin 15 can be pulled outward to move away from the inner wall of the through hole 13, and then the positioning pin 15 can be rotated 90° to engage it with the slot of the latch sleeve 14, so that the protective mesh plate 6 can be directly taken down for disassembly, thereby completing the rapid disassembly of the protective mesh plate 6.

[0023] Reference Figure 4 A groove-shaped guide groove 10 is provided on the side surface of the fixing block 5, and the guide block 7 slides relative to the inner wall of the guide groove 10, so that when the protective mesh plate 6 is installed, the guide block 7 slides inward along the inner wall of the guide groove 10, thereby guiding the installation of the protective mesh plate 6, so as to accurately install the protective mesh plate 6;

[0024] Secondly, a ring-shaped snap-fit ​​groove 11 is opened on the side surface of the air outlet 4, and a plastic snap-fit ​​ring 12 is fixedly connected to the side surface of the protective mesh plate 6, and the plastic snap-fit ​​ring 12 can be snapped into the inner wall of the snap-fit ​​groove 11, so that when the protective mesh plate 6 is installed, the plastic snap-fit ​​ring 12 is snapped into the inner wall of the snap-fit ​​groove 11, thereby preliminarily limiting the protective mesh plate 6, so that the positioning pin 15 can be snapped into the inner wall of the through hole 13 later, so that the protective mesh plate 6 can be stably fixed, thereby ensuring the stability of the installation.

[0025] The implementation principle of the easily disassembled negative pressure fan of the embodiment of the present application is as follows: after using for a period of time, the staff pulls the positioning pin 15 outward to move it away from the inner wall of the through hole 13, and then rotates the positioning pin 15 90° to engage it with the card slot at the end of the pin sleeve 14, thereby limiting the air outlet 4, and then pulls the protective mesh plate 6 outward to disengage the plastic card ring 12 from the inner wall of the card slot 11. At the same time, the guide block 7 slides outward along the inner wall of the guide groove 10 so that the guide block 7 is completely disengaged from the inner wall of the guide groove 10, thereby completing the rapid disassembly of the protective mesh plate 6, so that the protective mesh plate 6 and the internal components of the device can be cleaned and repaired, thereby helping to improve the operating efficiency of the device and extend its service life.

[0026] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0027] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0028] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0029] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A conveniently disassembled negative pressure fan, comprising a main frame (1), characterized in that: The inner wall of the main frame (1) is fixedly connected to a support frame (2), the side surface of the support frame (2) is rotatably connected to a fan (3), the side surface of the main frame (1) is fixedly connected to an air outlet (4), the outer surface of the air outlet (4) is fixedly connected to two fixed blocks (5), the side surface of the air outlet (4) is snap-connected to a protective mesh plate (6), the outer surface of the protective mesh plate (6) is fixedly connected to two guide blocks (7), and the guide blocks (7) are snap-connected to the fixed blocks (5).

2. The easily disassembled negative pressure fan according to claim 1, characterized in that: Both side surfaces of the main frame (1) are fixedly connected with support plates (8), and a plurality of mounting holes (9) are provided through the side surfaces of the support plates (8).

3. The easily disassembled negative pressure fan according to claim 1, characterized in that: A guide groove (10) is provided on the side surface of the fixed block (5), and the guide block (7) slides relative to the inner wall of the guide groove (10).

4. The easily disassembled negative pressure fan according to claim 1, characterized in that: A snap-fit ​​groove (11) is provided on the side surface of the air outlet (4), and a plastic snap-fit ​​ring (12) is fixedly connected to the side surface of the protective mesh plate (6), and the plastic snap-fit ​​ring (12) can be snap-fitted to the inner wall of the snap-fit ​​groove (11).

5. The easily disassembled negative pressure fan according to claim 1, characterized in that: A through hole (13) is provided on the side surface of the guide block (7), a latch sleeve (14) is fixedly connected to the side surface of the fixed block (5), an inner wall of the latch sleeve (14) is elastically slidably connected to a positioning pin (15) via a spring, and the positioning pin (15) can be engaged with the inner wall of the through hole (13).

Images