Combined fan that is easy to disassemble and maintain

Abstract

The present invention relates to the technical field related to fans, and discloses a combined fan that is easy to disassemble and maintain, including a base frame, a shock-absorbing support seat fixed at a corner position at the bottom end of the base frame, a fixing frame fixed to one side of the top end of the base frame, and a driving motor is installed on the top end of the fixing frame, a flip structure arranged at the end of the output shaft of the driving motor, a collecting structure arranged on the other side of the front cover plate, a sealing structure arranged on one side of the collecting structure, and a loading and unloading structure arranged on the outside of the shell, which is used to quickly disassemble the device for maintenance. By rotating the eccentric pressure wheel in the opposite direction to cancel the fixation of the front cover plate, the shell and the rear cover plate, the front cover plate and the shell can be disassembled as a whole, thereby realizing the easy disassembly function of the device, simplifying the disassembly process, and being able to be completed quickly without complicated tools, thus greatly saving maintenance time, making it easy for non-professionals to operate, and improving maintenance efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field related to fans, and more specifically, relates to a combined fan that is easy to disassemble and maintain. Background Art

[0002] As a highly efficient air treatment device, the combined fan can draw in fresh air and deliver it into the room, effectively improving the indoor air quality and enabling the circulation and exchange of indoor and outdoor air. It is suitable for offices, conference rooms, hotels, factories and other places. Especially in environments where it is necessary to keep the indoor air fresh, clean or at a specific temperature and humidity, the combined fan plays an irreplaceable role.

[0003] Prior art, such as the patent document with publication number CN215444486U, discloses a combined fresh air fan, including a fan, a supporting member is provided at the bottom of the fan, a base is provided at the bottom of the supporting member, a sliding member is provided at the bottom of the base, a sliding member is provided below the sliding member, a limiting member is provided inside the sliding member, and a clamping member is provided at the top of the supporting member, the clamping member includes a clamping plate and a first rubber pad, the clamping plate is installed on the top of the supporting plate, and the first rubber pad is installed on the side of the clamping plate close to the fan; Beneficial effects The main points of the technical solution are: the direction of the fan outlet can be adjusted by sliding the fan on the sliding member, and the fan is fixed on the supporting member, and the supporting member and the sliding member can slide, so that the fan can be easily disassembled when the fan is replaced or repaired in the later period. The main points of the technical solution are: the direction of the fan outlet can be adjusted by sliding the fan on the sliding member, and the fan is fixed on the supporting member, and the supporting member and the sliding member can slide, so that the fan can be easily disassembled when the fan is replaced or repaired in the later period. However, the existing combined new fan still has the following defects:

[0004] 1. In the prior art, fan parts are usually fixed together using bolts. Bolt connections require tools to tighten and disassemble, which is a relatively cumbersome operation. This results in a long time-consuming and increased maintenance cost when the fan needs to be disassembled for maintenance, affecting the fan's maintenance efficiency and normal operation, and hindering timely inspection and maintenance of the fan.

[0005] 2. In existing technologies, the angle of fan blades is fixed, making it difficult to flexibly adjust according to actual operating requirements. This makes it difficult for the fan to maintain optimal performance under different operating conditions, reducing its ability to cope with complex environments.

[0006] 3. In the existing technology, the dust-prone areas inside the fan, such as the blades and air ducts, are difficult to reach, resulting in long-term accumulation of dust and debris, which not only affects the operating efficiency of the fan, but may also cause malfunctions.

[0007] Therefore, in view of this, the existing structure and defects are studied and improved, and a modular fan that is easy to disassemble and maintain is provided, in order to achieve a more practical purpose. Summary of the Invention

[0008] The present invention provides a combined fan that is easy to disassemble and maintain, so as to overcome the above-mentioned defects in the prior art.

[0009] The purpose and effect of the modular fan that is easy to disassemble and maintain of the present invention are achieved by the following specific technical means:

[0010] Combined fan that is easy to disassemble and maintain, including the base frame,

[0011] The shock-absorbing support is fixed at the corner of the bottom end of the chassis to achieve vibration reduction during the operation of the fan;

[0012] A fixed frame is fixed to one side of the top of the base frame, and a driving motor is installed on the top of the fixed frame;

[0013] A rear cover plate is fixed to one side of the fixing frame, and a housing is detachably mounted on one side of the rear cover plate, a front cover plate is detachably mounted on one side of the housing, and a front cover plate is detachably mounted on one side of the air guide ring;

[0014] The air outlet pipe is sleeved on the top of the shell;

[0015] The flip structure is provided at the end of the output shaft of the driving motor, and an impeller blade is installed on one side of the flip structure;

[0016] A collecting structure is provided on the other side of the front cover plate and is used to collect foreign matter generated by backflushing;

[0017] A sealing structure is provided on one side of the collecting structure and is used to block the pipeline;

[0018] The air inlet pipe is installed on one side of the sealing structure;

[0019] The loading and unloading structure is arranged on the outside of the shell and is used to quickly disassemble the device for maintenance.

[0020] The loading and unloading structure includes a second connecting seat fixed to the outside of the rear cover plate, a first connecting seat fixed to the outside of the front cover plate, a positioning groove fixed to the outside of the shell, a positioning nut inserted in the second connecting seat, a quick-release rod threadedly connected to the inside of the positioning nut and passing through the positioning groove, an eccentric pressure wheel rotatably connected to one end of the quick-release rod, a spring seat installed between the eccentric pressure wheel and the first connecting seat and slidably connected to the quick-release rod, mounting grooves respectively provided on one side of the rear cover plate and one side of the front cover plate, a positioning ring fixed to one side of the front cover plate, a positioning pin fixed inside the positioning ring, a pressure ring detachably installed inside the positioning ring, a third connecting seat fixed on one side of the pressure ring, a pressure block rotatably connected to the inside of one side of the third connecting seat, and a pressure groove provided inside the flip structure.

[0021] The flip structure includes a mounting shell installed on one side of the rear cover plate, a hollow hydraulic cylinder fixed inside the mounting shell, a connecting block rotatably connected to the outside of the mounting shell, a movable ring installed at the telescopic end of the hollow hydraulic cylinder, a rotating ring sleeved on the outside of the movable ring and connected to the connecting block, a rotating plate detachably mounted on the outside of the connecting block, a connecting groove provided inside the rotating plate, a first guide groove provided on the surface of the rotating plate, a first fixed plate rotatably connected to one side of the rotating plate, a second guide groove provided on the surface of the first fixed plate, a hexagonal block fixed to the end of the output shaft of the driving motor, an inner hexagonal groove provided inside one side of the first fixed plate and engaged with the hexagonal block, and a movable rod fixed on one side of the impeller blade and slidably connected to the second guide groove.

[0022] According to a further technical solution, the pressing groove is provided inside one side of the first fixing plate, and a plug-in structure is formed between the pressing groove and the pressing block.

[0023] According to a further technical solution, the positioning pins are distributed in a circular shape with equal spacing on the inner side of the positioning ring, and the interiors of the pressure ring and the air guide ring are both provided with through holes matching the positioning pins.

[0024] A further technical solution is that a spiral slide rail is provided inside the rotating ring, a slide groove matching the spiral slide rail is provided on the outside of the moving ring, a plane bearing is installed between the moving ring and the hollow hydraulic cylinder, the moving rod passes through the second guide groove and extends to the inside of the first guide groove, and a sliding structure is formed between the moving rod and the first guide groove.

[0025] A further technical solution is that the collection structure includes a connecting pipe fixed on one side of the front cover, a dust exhaust pipe installed at the bottom end of the connecting pipe, a filter cage slidably connected to the inside of the bottom end of the dust exhaust pipe, a sealing gasket installed at the top of the filter cage, a fixed shell fixed on one side of the connecting pipe, a stepper motor installed on one side of the fixed shell, an inner gear ring rotatably connected to the inner wall of the fixed shell, a transmission gear installed at the end of the output shaft of the stepper motor and meshing with the inner gear ring, an outer gear ring rotatably connected to the inside of one side of the fixed shell and meshing with the transmission gear, a second baffle slidably connected to one side of the interior of the connecting pipe, and a first baffle slidably connected to the other side of the interior of the connecting pipe and connected to the transmission gear.

[0026] A further technical solution is that the sealing structure includes a transmission plate fixed on one side of the outer ring gear and connected to the second baffle, a third guide groove opened inside the transmission plate, a movable shaft slidably connected inside the third guide groove, a baffle fixed on the outside of the movable shaft, a slider fixed on one side of the baffle, a second fixed plate arranged on one side of the baffle, and a fourth guide groove opened inside one side of the second fixed plate and slidably connected to the slider.

[0027] According to a further technical solution, the first baffle extends to the interior of the fixed shell and is connected to the inner gear ring, the second baffle is connected to the transmission plate and the outer gear ring, and the front cross section of the filter cage is a funnel-shaped inclined structure.

[0028] According to a further technical solution, a sliding connection is formed between the movable shaft and the third guide groove, the third guide groove is distributed in a circular shape with equal intervals inside the transmission plate, and a clamping frame connected to the front cover plate is installed on one side of the second fixed plate.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The easily disassembled and maintained combined blower of the present invention cancels the fixation of the front cover, the housing, and the rear cover by rotating the eccentric pressure wheel in the opposite direction, and the front cover and the housing can be disassembled as a whole. This realizes the easy disassembly function of the device, simplifies the disassembly process, and can be completed quickly without complicated tools, greatly saving maintenance time and making it easy for non-professionals to operate, thereby improving maintenance efficiency.

[0031] The easily disassembled and maintained combined blower of the present invention realizes the wind pressure adjustment function of the device by activating the hollow hydraulic cylinder to push the movable ring to move, so that the second guide groove adjusts the angle of the impeller blade. By adjusting the blade angle, the wind pressure and air volume are precisely controlled to meet the needs of different working conditions, making it able to adapt to changing working conditions and improve the overall performance and comfort of the system.

[0032] The easily disassembled and maintained combined fan of the present invention starts the drive motor 12 to rotate in the reverse direction, thereby back-flushing and cleaning the interior of the fan and the ventilation duct. At the same time, the stepper motor drives the first baffle and the second baffle to separate, and the sealing structure seals the air inlet duct, so that the recoiled foreign matter and the air flow enter the interior of the dust exhaust duct for collection, thereby removing dust and debris accumulated in the fan and the duct.

[0033] The easily disassembled and maintained combined blower of the present invention drives the transmission plate to rotate through the outer gear ring, so that multiple sets of movable shafts drive the baffles to move toward the center of the pipeline, sealing the air inlet pipe to block the flow of gas, and preventing external impurities from entering the blower when idle. At the same time, the foreign matter cleared by backblowing is blocked to facilitate the foreign matter to enter the collection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0035] Figure 2 It is a schematic diagram of the rear-view overall three-dimensional structure of the present invention;

[0036] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention in front view and cross-section;

[0037] Figure 4 The present invention Figure 1 A in the middle is an enlarged structural diagram;

[0038] Figure 5 This is one of the exploded schematic diagrams of the loading and unloading structure of the present invention;

[0039] Figure 6 This is the second exploded schematic diagram of the loading and unloading structure of the present invention;

[0040] Figure 7 It is a schematic diagram of the three-dimensional structure of the pressure ring of the present invention;

[0041] Figure 8 This is a schematic diagram of the three-dimensional cross-sectional structure of the connecting block of the present invention;

[0042] Figure 9 The present invention Figure 3 The enlarged structural diagram at B in the middle;

[0043] Figure 10 This is one of the exploded schematic diagrams of the sealing structure of the present invention;

[0044] Figure 11 is a three-dimensional schematic diagram of the collection structure of the present invention;

[0045] Figure 12 This is the second explosion diagram of the sealing structure of the present invention.

[0046] Description of reference numerals:

[0047] 1. Base frame; 2. Shock-absorbing support seat; 3. Fixed frame; 4. Housing; 5. Loading and unloading structure; 501. Quick release rod; 502. Mounting slot; 503. Spring seat; 504. Eccentric pressure wheel; 505. First connecting seat; 506. Second connecting seat; 507. Positioning nut; 508. Positioning slot; 509. Positioning ring; 510. Positioning pin; 511. Pressure ring; 512. Third connecting seat; 513. Pressure block; 514. Pressure slot; 6. Air outlet duct; 7. Flip structure; 701. First fixing plate; 702. Rotating plate; 703. Connecting block; 704. First guide slot; 705. Connecting slot; 706. Second guide slot; 707. Hexagonal socket; 708. Moving rod; 709. Rotating ring; 710. Moving ring; 711, hollow hydraulic cylinder; 712, mounting shell; 713, hexagonal block; 8, sealing structure; 801, second fixed plate; 802, fourth guide groove; 803, baffle; 804, moving shaft; 805, transmission plate; 806, third guide groove; 807, slider; 9, collecting structure; 901, fixed shell; 902, first baffle; 903, sealing gasket; 904, filter cage; 905, dust exhaust pipe; 906, stepping motor; 907, connecting pipe; 908, second baffle; 909, inner gear ring; 910, transmission gear; 911, outer gear ring; 10, air inlet pipe; 11, front cover; 12, drive motor; 13, rear cover; 14, air guide ring; 15, impeller; 16, pressing frame. DETAILED DESCRIPTION

[0048] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0049] In the description of the present invention, unless otherwise specified, "plurality" means two or more; terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0051] As attached Figure 1 To the attached Figure 12 As shown: The present invention provides a combined fan that is easy to disassemble and maintain, including a base frame 1,

[0052] The shock-absorbing support seat 2 is fixed at the corner position of the bottom end of the base frame 1 to achieve shock absorption during the operation of the fan;

[0053] The fixing frame 3 is fixed to one side of the top of the base frame 1, and the top of the fixing frame 3 is equipped with a driving motor 12;

[0054] The rear cover 13 is fixed to one side of the fixing frame 3, and the housing 4 can be detachably mounted on one side of the rear cover 13. The front cover 11 can be detachably mounted on one side of the housing 4, and the front cover 11 can be detachably mounted on one side of the air guide ring 14;

[0055] The air outlet pipe 6 is sleeved on the top of the housing 4;

[0056] The flip structure 7 is provided at the end of the output shaft of the driving motor 12, and an impeller blade 15 is installed on one side of the flip structure 7;

[0057] The collecting structure 9 is provided on the other side of the front cover 11 and is used to collect foreign matter generated by backflushing;

[0058] The sealing structure 8 is provided on one side of the collecting structure 9 and is used to block the pipeline;

[0059] The air inlet pipe 10 is installed on one side of the sealing structure 8;

[0060] The loading and unloading structure 5 is provided on the outside of the housing 4 and is used for quickly disassembling the device for maintenance;

[0061] In this embodiment, the device is supported by the base frame 1, and the main structure of the fan is composed of the outer shell 4, the rear cover 13, and the front cover 11. The loading and unloading structure 5 is used to realize the rapid loading and unloading of the outer shell 4, the front cover 11 and the flip structure 7, so as to facilitate the cleaning and maintenance of the internal structural parts of the fan. The drive motor 12 is started to make the impeller blades 15 generate airflow. At the same time, the air outlet pipe 6 guides the airflow to be discharged, and the air inlet pipe 10 introduces the airflow. The angle of the impeller blades 15 is adjusted by using the flip structure 7 to adjust the air volume and air pressure. The drive motor 12 is started to rotate in the opposite direction, and the sealing structure 8 can be used to seal the air inlet pipe 10 so that the collection structure 9 can collect backblown foreign matter.

[0062] like Figures 1 to 4 As shown, the loading and unloading structure 5 includes a second connecting seat 506 fixed to the outside of the rear cover 13, a first connecting seat 505 fixed to the outside of the front cover 11, a positioning groove 508 fixed to the outside of the housing 4, a positioning nut 507 inserted into the inside of the second connecting seat 506, a quick release rod 501 threadedly connected to the inside of the positioning nut 507 and passing through the positioning groove 508, an eccentric pressure wheel 504 rotatably connected to one end of the quick release rod 501, and a cam 506 installed between the eccentric pressure wheel 504 and the first connecting seat 505 and connected to the quick release rod 501. The spring seat 503 to which the dismantling rod 501 is slidably connected, the mounting grooves 502 are respectively opened on one side of the rear cover plate 13 and one side of the front cover plate 11, the positioning ring 509 is fixed on one side of the front cover plate 11, the positioning pin 510 is fixed inside the positioning ring 509, the pressure ring 511 is detachably installed inside the positioning ring 509, the third connecting seat 512 is fixed on one side of the pressure ring 511, the pressure block 513 is rotatably connected to the inside of one side of the third connecting seat 512, and the pressure groove 514 is arranged inside the flip structure 7.

[0063] In this embodiment, the fixation of the front cover plate 11, the outer shell 4 and the rear cover plate 13 is cancelled by rotating the eccentric pressure wheel 504 in the opposite direction, and the front cover plate 11 and the outer shell 4 can be disassembled as a whole, and the pressure ring 511 is pulled out of the interior of the positioning ring 509, so as to facilitate the disassembly of the first fixed plate 701 and the rotating plate 702 and separate them from the output shaft of the drive motor 12.

[0064] Preferably, the flip structure 7 includes a mounting shell 712 mounted on one side of the rear cover 13, a hollow hydraulic cylinder 711 fixed inside the mounting shell 712, a connecting block 703 rotatably connected to the outside of the mounting shell 712, a movable ring 710 mounted on the telescopic end of the hollow hydraulic cylinder 711, a rotating ring 709 sleeved on the outside of the movable ring 710 and connected to the connecting block 703, a rotating plate 702 detachably mounted on the outside of the connecting block 703, a connecting groove 705 opened inside the rotating plate 702, a first guide groove 704 opened on the surface of the rotating plate 702, a first fixed plate 701 rotatably connected to one side of the rotating plate 702, a second guide groove 706 opened on the surface of the first fixed plate 701, a hexagonal block 713 fixed to the end of the output shaft of the drive motor 12, an inner hexagonal groove 707 opened inside one side of the first fixed plate 701 and engaged with the hexagonal block 713, and a moving rod 708 fixed on one side of the impeller blade 15 and slidably connected to the second guide groove 706.

[0065] In this embodiment, the hollow hydraulic cylinder 711 is started to push the movable ring 710 to move, so that the rotating ring 709 drives the rotating plate 702 to rotate, and the movable rod 708 slides inside the second guide groove 706 and the first guide groove 704, and the angle of placement of the impeller blade 15 is adjusted. The connecting block 703 is pulled apart from the connecting groove 705 to facilitate the disassembly of the rotating plate 702.

[0066] Preferably, the pressing groove 514 is provided inside one side of the first fixing plate 701 , and a plug-in structure is formed between the pressing groove 514 and the pressing block 513 .

[0067] In this embodiment, the pressing groove 514 and the pressing block 513 form a plug-in structure, and the driving motor 12 and the flip structure 7 can be separated by a direct plug-in operation.

[0068] Preferably, the positioning pins 510 are distributed in a circular shape with equal intervals on the inner side of the positioning ring 509 , and through holes matching the positioning pins 510 are provided inside the pressure ring 511 and the air guide ring 14 .

[0069] In this embodiment, the positioning pin 510, the pressure ring 511, and the through hole of the air guide ring 14 form a three-point positioning mechanism to ensure that the installation position is accurate and not easily misplaced.

[0070] Preferably, a spiral slide rail is provided inside the rotating ring 709, a slide groove matching the spiral slide rail is provided on the outside of the moving ring 710, a plane bearing is installed between the moving ring 710 and the hollow hydraulic cylinder 711, the moving rod 708 passes through the second guide groove 706 and extends to the inside of the first guide groove 704, and a sliding structure is formed between the moving rod 708 and the first guide groove 704.

[0071] In this embodiment, the spiral slide rail of the rotating ring 709 and the matching slide groove of the movable ring 710 constitute a spiral transmission, which cooperates with the linear drive of the hollow hydraulic cylinder 711 to realize the compound conversion of rotational motion and linear motion. The establishment of the plane bearing allows the movable ring 710 to rotate simultaneously with the first fixed plate 701 and the rotating plate 702.

[0072] Preferably, the collecting structure 9 includes a connecting pipe 907 fixed on one side of the front cover 11, a dust exhaust pipe 905 installed at the bottom end of the connecting pipe 907, a filter cage 904 slidably connected to the inside of the bottom end of the dust exhaust pipe 905, a sealing gasket 903 installed at the top of the filter cage 904, a fixed shell 901 fixed on one side of the connecting pipe 907, a stepper motor 906 installed on one side of the fixed shell 901, an inner gear ring 909 rotatably connected to the inner wall of the fixed shell 901, a transmission gear 910 installed at the end of the output shaft of the stepper motor 906 and meshing with the inner gear ring 909, an outer gear ring 911 rotatably connected to the inside of one side of the fixed shell 901 and meshing with the transmission gear 910, a second baffle 908 slidably connected to one side of the interior of the connecting pipe 907, and a first baffle 902 slidably connected to the other side of the interior of the connecting pipe 907 and connected to the transmission gear 910.

[0073] In this embodiment, the transmission gear 910 is driven to rotate by the stepper motor 906, so that the inner gear ring 909 and the outer gear ring 911 simultaneously drive the first baffle 902 and the second baffle 908 to separate, and the dust exhaust pipe 905 is opened. At the same time, the sealing structure 8 seals the air inlet pipe 10, so that the recoil foreign matter and airflow enter the interior of the dust exhaust pipe 905, and the filter cage 904 filters the air leaving the dust exhaust pipe 905 to intercept and capture foreign matter in the air.

[0074] Preferably, the sealing structure 8 includes a transmission plate 805 fixed on one side of the outer gear ring 911 and connected to the second baffle 908, a third guide groove 806 opened inside the transmission plate 805, a movable shaft 804 slidably connected inside the third guide groove 806, a baffle 803 fixed on the outside of the movable shaft 804, a slider 807 fixed on one side of the baffle 803, a second fixed plate 801 arranged on one side of the baffle 803, and a fourth guide groove 802 opened inside one side of the second fixed plate 801 and slidably connected to the slider 807.

[0075] In this embodiment, the outer gear ring 911 drives the transmission plate 805 to rotate, so that the multiple groups of moving shafts 804 drive the blocking piece 803 to move toward the center of the pipeline, sealing the air inlet pipe 10 to block the flow of gas.

[0076] Preferably, the first baffle 902 extends to the interior of the fixed shell 901 and is connected to the inner gear ring 909, the second baffle 908 is connected to the transmission plate 805 and the outer gear ring 911, and the front cross section of the filter cage 904 is a funnel-shaped inclined structure.

[0077] In this embodiment, in order to facilitate the rotation of the inner gear ring 909 and the outer gear ring 911, the first baffle 902 and the second baffle 908 are driven to move at the same time, the dust exhaust pipe 905 is opened, and the inclined structure of the filter cage 904 increases the surface area, significantly improving the filtering efficiency.

[0078] Preferably, a sliding connection is formed between the movable shaft 804 and the third guide groove 806 , and the third guide groove 806 is distributed in a circular shape with equal intervals inside the transmission plate 805 . A pressing frame 16 connected to the front cover plate 11 is installed on one side of the second fixed plate 801 .

[0079] In this embodiment, multiple sets of third guide grooves 806 simultaneously drive multiple sets of movable shafts 804 to move, so that multiple sets of baffles 803 move toward the center of the pipeline, thereby sealing the air inlet pipe 10, and the position of the second fixed plate 801 is pressed and fixed by the clamping frame 16.

[0080] The specific method of use of the present invention is as follows: the device is placed in the use position, and the air outlet pipe 6 and the air inlet pipe 10 are connected to the ventilation pipeline. The device is supported by the base frame 1. At the same time, the shock-absorbing support seat 2 effectively absorbs the operation vibration, significantly reducing the vibration impact of the fan on the surrounding environment. The fan main structure is composed of the shell 4, the rear cover 13, and the front cover 11. The loading and unloading structure 5 is used to realize the rapid loading and unloading of the shell 4, the front cover 11 and the flip structure 7, so as to facilitate the cleaning and maintenance of the internal structural parts of the fan. The drive motor 12 is started to make the drive motor 12 drives the impeller blade 15 to rotate through the flip structure 7, so that the impeller blade 15 generates airflow, and at the same time, the air outlet pipe 6 guides the airflow to be discharged, and the air inlet pipe 10 introduces the airflow. By using the flip structure 7 to adjust the angle of the impeller blade 15, the air volume and air pressure are adjusted, and the drive motor 12 is started to rotate in the opposite direction to back-blow and clean the inside of the fan and the ventilation pipe. The sealing structure 8 can be used to seal the air inlet pipe 10 so that the collection structure 9 can collect back-blown foreign matter. The air guide ring 14 is used to optimize the airflow path, and the compression frame 16 is used to reinforce the position of the sealing structure 8;

[0081] The installation of the housing 4 is guided by the installation groove 502 so that the front cover 11, the housing 4 and the rear cover 13 are aligned during the installation process to prevent misalignment and improve the sealing effect of the connection. By inserting the positioning nut 507 into the interior of the second connecting seat 506 and inserting the quick release rod 501 into the positioning groove 508 and the interior of the first connecting seat 505, the installation position of the quick release rod 501 is restricted so that the position of the quick release rod 501 is not easily offset after installation. 07 Pull the quick release rod 501 to move toward the rear cover 13, adjust the distance between the eccentric pressure wheel 504 and the first connecting seat 505, press the eccentric pressure wheel 504 to rotate so that the eccentric pressure wheel 504 generates pressure by the eccentric principle, and presses the first connecting seat 505 through the spring seat 503, tightening and fixing the position between the front cover 11, the housing 4 and the rear cover 13. At the same time, the front cover 11 passes through the positioning ring 509 to press the pressure ring 511, the pressure block 513, the first fixed plate 701, and the rotating plate 70 2 to ensure normal use, and increase the friction between the eccentric pressure wheel 504 and the first connecting seat 505 through the elastic deformation of the spring seat 503 to prevent the first connecting seat 505 from loosening due to vibration or impact. When disassembling, the eccentric pressure wheel 504 is rotated in the opposite direction to cancel the fixation of the front cover 11, the shell 4 and the rear cover 13, and then the quick release rod 501 is taken out from the first connecting seat 505 and the positioning groove 508, thereby the front cover 11 and the shell 4 can be disassembled as a whole, and the front cover 11 and the shell 4 can be disassembled as a whole. The dynamic pressure ring 511 leaves the interior of the positioning ring 509 to facilitate the disassembly of the air guide ring 14. The pressure block 513 is pulled out from the interior of the pressure groove 514, and the pressure of the pressure ring 511 on the first fixed plate 701 and the rotating plate 702 is released, so that the first fixed plate 701 and the rotating plate 702 can be disassembled and separated from the output shaft of the drive motor 12, thereby cleaning and maintaining the impeller blades 15. The air guide ring 14 and the pressure ring 511 are positioned by the positioning pin 510 to prevent installation deviation.

[0082] By starting the hollow hydraulic cylinder 711 to extend, the hollow hydraulic cylinder 711 pushes the moving ring 710 to move, and then the rotating ring 709 slides on the surface of the moving ring 710, converting the linear motion into rotational motion, and causing the rotating ring 709 to drive the connecting block 703 to rotate, and then the connecting block 703 drives the rotating plate 702 to rotate on one side of the first fixed plate 701 through the connecting groove 705, thereby driving the moving rod 708 to slide inside the second guide groove 706 and the first guide groove 704, so that the impeller blade 15 rotates on the surface of the first fixed plate 701, and the placement angle of the impeller blade 15 is adjusted. By pulling the connecting block 703 and the connecting groove 705 apart, the rotating plate 702 can be disassembled. The hexagonal block 713 is inserted into the inner hexagonal groove 707 to connect the output shaft of the drive motor 12 to the first fixed plate 701, so that the drive motor 12 drives the first fixed plate 701 and the impeller blade 15 to rotate. At the same time, when disassembling, it is convenient to pull the first fixed plate 701 and the output shaft of the drive motor 12 apart;

[0083] By starting the stepper motor 906 to rotate, the stepper motor 906 drives the transmission gear 910 to rotate, and at the same time, the transmission gear 910 drives the inner gear ring 909 and the outer gear ring 911 to rotate in the opposite direction through the meshing of the teeth. The inner gear ring 909 drives the first baffle 902 to rotate in the positive direction on the inner wall of the connecting tube 907, and the outer gear ring 911 drives the second baffle 908 to rotate in the opposite direction on the inner wall of the connecting tube 907 through the transmission plate 805, so that the first baffle 902 is separated from the second baffle 908, and the dust exhaust pipe 905 is opened. At the same time, the outer gear ring 911 drives the transmission plate 805 to rotate and change the position of the third guide groove 806, so that the moving shaft 804 is forced to slide along the third guide groove 806, so that the multiple groups of moving shafts 804 drive the baffles 80 3 moves toward the center of the pipeline to seal the air inlet pipe 10 and block the circulation of gas. At the same time, the slider 807 slides inside the fourth guide groove 802 to ensure that the baffle 803 moves smoothly and accurately. The drive motor 12 is started to rotate in the opposite direction to backflush and clean the ventilation pipeline. At the same time, foreign matter is backflushed into the interior of the connecting pipe 907. Due to the obstruction of the baffle 803, the air flow and foreign matter enter the interior of the dust exhaust pipe 905. The filter cage 904 filters the air leaving the dust exhaust pipe 905, intercepts and captures foreign matter in the air, and pulls the filter cage 904 horizontally to separate the filter cage 904 from the dust exhaust pipe 905 to facilitate cleaning the interior of the filter cage 904. The connection between the filter cage 904 and the dust exhaust pipe 905 is sealed by the sealing gasket 903.

[0084] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. A modular fan that is easy to disassemble and maintain, comprising a base frame (1), characterized in that: A shock-absorbing support seat (2) is fixed at a corner position at the bottom end of the base frame (1) to achieve shock absorption during the operation of the fan; A fixed frame (3) is fixed to one side of the top of the base frame (1), and a driving motor (12) is installed on the top of the fixed frame (3); A rear cover plate (13) is fixed to one side of the fixing frame (3), and the housing (4) can be detachably mounted on one side of the rear cover plate (13), a front cover plate (11) can be detachably mounted on one side of the housing (4), and one side of the front cover plate (11) can be detachably mounted on the air guide ring (14); An air outlet pipe (6) is sleeved on the top of the housing (4); A flip structure (7) is provided at the end of the output shaft of the drive motor (12), and an impeller blade (15) is installed on one side of the flip structure (7); A collecting structure (9) is provided on the other side of the front cover (11) and is used to collect foreign matter generated by backflushing; A sealing structure (8) is provided on one side of the collecting structure (9) and is used to block the pipeline; An air inlet pipe (10) is installed on one side of the sealing structure (8); A loading and unloading structure (5) is provided on the outside of the housing (4) and is used for quickly disassembling the device for maintenance; The loading and unloading structure (5) comprises a second connecting seat (506) fixed on the outside of the rear cover (13), a first connecting seat (505) fixed on the outside of the front cover (11), a positioning groove (508) fixed on the outside of the housing (4), a positioning nut (507) inserted into the interior of the second connecting seat (506), a quick-release rod (501) threadedly connected to the interior of the positioning nut (507) and passing through the positioning groove (508), an eccentric pressure wheel (504) rotatably connected to one end of the quick-release rod (501), and a quick-release rod (501) installed between the eccentric pressure wheel (504) and the first connecting seat (505) and connected to the quick-release rod (501). A spring seat (503) slidably connected to the rod (501), a mounting groove (502) respectively provided on one side of the rear cover plate (13) and one side of the front cover plate (11), a positioning ring (509) fixed on one side of the front cover plate (11), a positioning pin (510) fixed inside the positioning ring (509), a pressure ring (511) detachably mounted inside the positioning ring (509), a third connecting seat (512) fixed on one side of the pressure ring (511), a pressure block (513) rotatably connected inside one side of the third connecting seat (512), and a pressure groove (514) provided inside the flip structure (7); The flip structure (7) comprises a mounting shell (712) mounted on one side of the rear cover plate (13), a hollow hydraulic cylinder (711) fixed inside the mounting shell (712), a connecting block (703) rotatably connected to the outside of the mounting shell (712), a moving ring (710) mounted on the telescopic end of the hollow hydraulic cylinder (711), a rotating ring (709) sleeved on the outside of the moving ring (710) and connected to the connecting block (703), a rotating plate (702) detachably mounted on the outside of the connecting block (703), and a connecting groove (709) provided inside the rotating plate (702). 05), a first guide groove (704) provided on the surface of the rotating plate (702), a first fixed plate (701) rotatably connected to one side of the rotating plate (702), a second guide groove (706) provided on the surface of the first fixed plate (701), a hexagonal block (713) fixed to the end of the output shaft of the driving motor (12), an inner hexagonal groove (707) provided inside one side of the first fixed plate (701) and engaged with the hexagonal block (713), and a moving rod (708) fixed to one side of the impeller blade (15) and slidably connected to the second guide groove (706).

2. The easily disassembled and maintained combined blower according to claim 1, characterized in that: The pressing groove (514) is opened inside one side of the first fixed plate (701), and a plug-in structure is formed between the pressing groove (514) and the pressing block (513).

3. The easily disassembled and maintained combined blower according to claim 1, characterized in that: The positioning pins (510) are distributed in a circular manner at equal intervals on the inner side of the positioning ring (509), and the interiors of the pressure ring (511) and the air guide ring (14) are both provided with through holes that match the positioning pins (510).

4. The easily disassembled and maintained combined blower according to claim 1, characterized in that: A spiral slide rail is provided inside the rotating ring (709), a slide groove matching the spiral slide rail is provided on the outside of the moving ring (710), a plane bearing is installed between the moving ring (710) and the hollow hydraulic cylinder (711), the moving rod (708) passes through the second guide groove (706) and extends to the inside of the first guide groove (704), and a sliding structure is formed between the moving rod (708) and the first guide groove (704).

5. The easily disassembled and maintained combined blower according to claim 1, characterized in that: The collecting structure (9) comprises a connecting pipe (907) fixed to one side of the front cover (11), a dust exhaust pipe (905) installed at the bottom end of the connecting pipe (907), a filter cage (904) slidably connected to the inside of the bottom end of the dust exhaust pipe (905), a sealing gasket (903) installed at the top end of the filter cage (904), a fixed shell (901) fixed to one side of the connecting pipe (907), a stepping motor (906) installed at one side of the fixed shell (901), and a stepping motor (906) rotatably connected to the inner wall of the fixed shell (901). an inner gear ring (909) mounted on the stepper motor (906), a transmission gear (910) mounted on the end of the output shaft of the stepper motor (906) and meshingly connected to the inner gear ring (909), an outer gear ring (911) rotatably connected to the interior of one side of the fixed housing (901) and meshingly connected to the transmission gear (910), a second baffle (908) slidably connected to one side of the interior of the connecting tube (907), and a first baffle (902) slidably connected to the other side of the interior of the connecting tube (907) and connected to the transmission gear (910).

6. The easily disassembled and maintained combined blower according to claim 1, characterized in that: The sealing structure (8) comprises a transmission plate (805) fixed to one side of the outer gear ring (911) and connected to the second baffle (908), a third guide groove (806) provided inside the transmission plate (805), a moving shaft (804) slidably connected inside the third guide groove (806), a baffle (803) fixed to the outside of the moving shaft (804), a slider (807) fixed to one side of the baffle (803), a second fixed plate (801) provided on one side of the baffle (803), and a fourth guide groove (802) provided inside one side of the second fixed plate (801) and slidably connected to the slider (807).

7. The easily disassembled and maintained combined blower according to claim 5, characterized in that: The first baffle (902) extends to the interior of the fixed shell (901) and is connected to the inner gear ring (909); the second baffle (908) is connected to the transmission plate (805) and the outer gear ring (911); and the front cross-section of the filter cage (904) presents a funnel-shaped inclined structure.

8. The easily disassembled and maintained combined blower according to claim 6, characterized in that: A sliding connection is formed between the movable shaft (804) and the third guide groove (806), and the third guide groove (806) is distributed in a circular shape with equal intervals inside the transmission plate (805). A pressing frame (16) connected to the front cover plate (11) is installed on one side of the second fixed plate (801).

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