A cooling fan

Abstract

The present application relates to a heat dissipation fan, and to the technical field of fans, which includes a casing, an air inlet is provided on one side of the casing, an air inlet pipe is provided on the casing, a mounting plate is provided inside the casing, a dustproof port is provided on the mounting plate, and a dustproof net is provided inside the dustproof port; an inspection port for the mounting plate to pass through is provided at one end of the casing, and an inspection door is rotatably provided outside the casing; a group of first connecting blocks are symmetrically provided on the bottom wall of the mounting plate, a group of slide rails are symmetrically provided on the inner wall of the casing, a slider is slidably provided on the slide rail, a rotating shaft is also rotatably provided inside the casing, a group of second connecting blocks are symmetrically provided on the bottom wall of the mounting plate, a linkage rod is hingedly provided on the second connecting block, and a rotating assembly is provided on the casing. The present application has the effect of facilitating the cleaning of the dustproof net and extending the service life of the dustproof net.

Description

Technical Field

[0001] The present application relates to the technical field of fans, and in particular to a heat dissipation fan. Background Art

[0002] At present, the fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. In production, especially in places where exhaust and blowing are required, fans are widely used.

[0003] Most of the fans designed in the related art include dust screens, and the dust screens are generally arranged at the air inlet. The dust screens can filter dust and impurities in the air entering the fan. After working for a long time, more impurities and dust will adhere to the dust screens, and the dust screens need to be cleaned regularly. If the air inlet of the fan is connected to the pipe, the dust screen is designed at the air inlet, which makes it difficult to clean the dust screen and is difficult to clean. Therefore, there is room for improvement. Summary of the invention

[0004] The purpose of the present application is to provide a heat dissipation fan, which has the advantage of being easy to clean the dustproof net and extending the service life of the dustproof net.

[0005] The heat dissipation fan provided in this application adopts the following technical solution:

[0006] A heat dissipation fan comprises a casing, one side of the casing is provided with an air inlet, the casing is provided with an air inlet duct at the air inlet, a mounting plate is provided inside the casing, a dustproof port corresponding to the air inlet is provided on the mounting plate, and a dustproof net is provided inside the dustproof port; an inspection port for the mounting plate to pass through is provided at one end of the casing, and an inspection door for sealing the inspection port is rotatably provided outside the casing; a group of first connecting blocks are symmetrically provided on the bottom wall of the mounting plate, a group of slide rails are symmetrically provided on the inner wall of the casing, and sliders are slidably provided on the slide rails, wherein one of the first connecting blocks is hinged to one slider, and the other of the first connecting block is hinged to the other slider; a rotating shaft is also rotatably provided in the casing, a group of second connecting blocks are symmetrically provided on the bottom wall of the mounting plate, a linkage rod is hingedly provided on the second connecting block, and one end of the linkage rod away from the second connecting block is rotatably connected to the rotating shaft; a rotating assembly is provided on the casing, and the rotating assembly is used to drive the rotating shaft to rotate in the casing.

[0007] By adopting the above technical solution, when the fan is in use, the air inlet pipe on the fan is connected to the equipment that needs heat dissipation, and the air passes through the air inlet through the air inlet pipe. Since the dust screen is arranged at the air inlet, impurities in the air and the dust screen will be filtered, and some impurities and dust will adhere to the dust screen. When the dust screen needs to be cleaned, the inspection door is opened to keep the inspection door away from the inspection port, and then the rotating shaft is driven to rotate by the rotating assembly. The rotation of the rotating shaft drives the linkage rod to rotate at the same time, and the linkage rod pulls the second connecting block so that the mounting plate passes through the inspection port, and at the same time the first connecting block on the bottom wall of the mounting plate drives the slider to slide on the slide rail. The slide rail can support the mounting plate, and the linkage rod drives the mounting plate to rotate. The mounting plate rotates from a horizontal state to a vertical state, and the mounting plate is just vertically located at the inspection port. At this time, the dust screen on the mounting plate can be cleaned through the inspection port. When cleaning is completed, the rotating shaft is driven in the reverse direction by the rotating assembly, thereby driving the linkage rod to push the mounting plate. The first connecting block drives the slider to slide in the opposite direction on the slide rail, so that the mounting plate is quickly and horizontally reset in the air inlet. The operation is convenient and quick, and at the same time, it occupies a small space in the fan, does not affect the normal use of the fan, has low cost, improves the convenience of cleaning, and extends the service life of the dust screen.

[0008] Optionally, the rotating assembly includes a worm wheel, a worm and a booster rod, the worm is rotatably arranged in the casing, the worm wheel is fixedly connected to the rotating shaft and is coaxially arranged, the worm and the worm wheel are meshed with each other, and one end of the worm away from the inspection port passes through the casing and is connected to the booster rod.

[0009] By adopting the above technical solution, when it is necessary to drive the rotating shaft to rotate to drive the linkage rod to push or pull the mounting plate, the worm is driven to rotate through the power-assisting rod, and the worm and the worm wheel are offset to drive the worm wheel and the rotating shaft to rotate. The worm and the worm wheel can be quickly locked, which is convenient and fast to operate while having high safety. The position of the mounting plate can be quickly fixed, and the mounting plate will not drive the rotating shaft to rotate under the action of its own gravity.

[0010] Optionally, a tension block is provided on the rotating shaft, and a tension spring is provided on the bottom wall inside the casing, one end of the tension spring is interconnected with the bottom wall of the casing, and the other end of the tension spring is interconnected with the tension block.

[0011] By adopting the above technical solution, when the mounting plate is rotated to the air inlet, the rotating shaft is driven to rotate through the rotating assembly to drive the mounting plate to rotate, and the tensioning spring pulls the tensioning block to drive the mounting plate to rotate toward the air inlet. The mounting plate can be against the casing at the air inlet, and the tensioning spring is beneficial to improve the stability of the mounting plate at the air inlet, so that the dust port and the air inlet remain corresponding.

[0012] Optionally, a connecting rod is rotatably provided on and passes through the inspection door, one end of the connecting rod is connected to an operating rod, and the other end of the connecting rod is connected to a cleaning block, and the cleaning block is provided with bristles that can abut against the surface of the dustproof net.

[0013] By adopting the above technical solution, when the mounting plate is rotated from the air inlet to the inspection port, it is necessary to open the inspection door first, and the mounting plate will rotate from a horizontal state to a vertical state. At this time, the dust screen is vertically set at the inspection port. Then the inspection door is closed, and the bristles on one side of the inspection door will be against the dust screen. The operating lever is turned, and the operating lever drives the cleaning block to rotate through the connecting rod, thereby driving the bristles to clean the dust screen. Cleaning is performed while the inspection door is closed, which further improves the convenience of cleaning and reduces dust pollution.

[0014] Optionally, a vibration groove is provided on the inner wall of the dustproof port, the dustproof net is located in the vibration groove, a plurality of connecting bolts threadedly connected to the bottom wall of the vibration groove are penetrated through the dustproof net, a vibration spring is sleeved on the connecting bolts, one end of the vibration spring abuts against the bottom wall of the vibration groove, and the other end of the vibration spring abuts against the bottom end of the dustproof net; a plurality of protrusions are provided on the dustproof net, and an abutting block is provided on the side of the cleaning block facing the direction of the bristles, and the abutting block can abut against the protrusion.

[0015] By adopting the above technical solution, when the operating lever is rotated to drive the cleaning block to rotate, the abutment block on the cleaning block will abut against the protrusion on the dustproof net, and the dustproof net will shrink into the vibration groove under the force. The cleaning block continues to rotate, and the abutment block will separate from the protrusion. At this time, under the abutment force of the vibration spring, the dustproof net will abut against the connecting bolt, thereby causing the dustproof net to vibrate to a certain extent. In this way, when the cleaning block is used to clean the dustproof net, the dustproof net can be driven to vibrate, which is beneficial to cleaning the dust and impurities on the dustproof net and improving the cleaning effect.

[0016] Optionally, the cleaning block includes a fixed block and a mounting block, the fixed block is connected to the connecting rod, the bristles are arranged on the mounting block, a group of dovetail blocks are symmetrically arranged on the side wall of the mounting block, and the fixed block is provided with a dovetail groove for the dovetail blocks to be inserted and abutted against each other.

[0017] By adopting the above technical solution, the dovetail block and the dovetail groove cooperate with each other to achieve disassembly between the mounting plate and the fixing block, thereby facilitating the cleaning and replacement of the bristles after use and maintaining the cleaning effect of the bristles.

[0018] Optionally, an observation port is provided through the inspection door, and a transparent plate is provided in the observation port.

[0019] By adopting the above technical solution, the working conditions inside the casing can be observed from the observation port through the transparent plate, so that the cleanliness of the dustproof net can be easily understood.

[0020] Optionally, a dust box is provided on one side of the inspection door facing the cleaning block, and the dust box is located below the cleaning block.

[0021] By adopting the above technical solution, when the operating rod is rotated to clean the dustproof net with the cleaning block, the dust can fall into the dust collection box below the cleaning block, which is convenient for collecting dust and impurities.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By arranging a casing, an air inlet, an air inlet pipe, a mounting plate, a dustproof port, a dustproof net, an inspection port, an inspection door, a first connecting block, a slide rail, a slider, a rotating shaft, a second connecting block, a linkage rod, a worm gear, a worm and a booster rod, when the dustproof net needs to be cleaned, the booster rod is used to drive the rotating shaft to rotate, and the linkage rod drives the mounting plate to rotate, and the mounting plate rotates from a horizontal state to a vertical state, and the mounting plate is just vertically located at the inspection port. At this time, the dustproof net on the mounting plate can be cleaned through the inspection port, which is convenient and quick to operate, and at the same time occupies a small space in the fan, with low cost, improved convenience of cleaning, and extended service life of the dustproof net;

[0024] 2. By setting a connecting rod, an operating rod, a cleaning block and bristles, when the mounting plate is rotated from the air inlet to the inspection port, the inspection door needs to be opened first, and the mounting plate will rotate from a horizontal state to a vertical state. At this time, the dust screen is vertically set at the inspection port. Then the inspection door is closed, and the bristles on one side of the inspection door will be against the dust screen. The operating rod is turned, and the operating rod drives the cleaning block to rotate through the connecting rod, thereby driving the bristles to clean the dust screen. Cleaning is performed when the inspection door is closed, which further improves the convenience of cleaning and reduces dust pollution.

[0025] 3. By setting the vibration groove, connecting bolts, vibration springs, protrusions and abutment blocks, when the operating lever is rotated to drive the cleaning block to rotate, the dustproof net can be driven to vibrate, which is beneficial to cleaning the dust and impurities on the dustproof net and improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is an overall cross-sectional schematic diagram of a heat dissipation fan provided in an embodiment of the present application;

[0027] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A;

[0028] Figure 3 yes Figure 1A partial enlarged schematic diagram of part B;

[0029] Figure 4 yes Figure 1 A partial enlarged schematic diagram of part C in the middle;

[0030] In the figure, 1, casing; 11, air inlet; 12, air inlet duct; 2, mounting plate; 21, dustproof port; 211, vibration groove; 212, connecting bolt; 213, vibration spring; 22, dustproof net; 221, bump; 3, inspection port; 31, inspection door; 311, connecting rod; 312, operating rod; 41, first connecting block; 42, second connecting block; 5, slide rail; 51, slider; 52, rotating shaft; 521, tensioning block; 522, tensioning spring; 53, linkage rod; 6, rotating assembly; 61, worm gear; 62, worm; 63, power assist rod; 7, cleaning block; 71, fixing block; 711, dovetail groove; 72, mounting block; 721, dovetail block; 81, bristles; 82, abutment block; 9, observation port; 91, transparent plate; 10, dust collection box. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1 -Attached Figure 4 , further details of this application are given.

[0032] A cooling fan, referring to Figure 1 , including a housing 1, an air inlet 11 is provided on the top wall of the housing 1, and an air inlet pipe 12 is fixedly connected to the housing 1 and located at the air inlet 11. A mounting plate 2 is provided in the housing 1, and a dustproof port 21 corresponding to the air inlet 11 is provided on the mounting plate 2, and a dustproof net 22 is provided in the dustproof port 21. When the fan is in use, the air inlet pipe 12 on the fan is connected to the equipment that needs heat dissipation, and the air passes through the air inlet 11 through the air inlet pipe 12. Since the dustproof net 22 is provided at the air inlet 11, impurities in the air and the dustproof net 22 will be filtered, and some impurities and dust will adhere to the dustproof net 22.

[0033] Reference Figure 1 The side wall of the housing 1 is provided with an inspection opening 3 for the installation plate 2 to pass through, and an inspection door 31 for sealing the inspection opening 3 is rotatably provided on the outside of the housing 1, and the inspection door 31 can be fixed at the inspection opening 3 by a door lock. A group of first connecting blocks 41 are symmetrically fixedly provided on the bottom wall of the installation plate 2, and a group of slide rails 5 are symmetrically provided on the inner wall of the housing 1. The slide rails 5 are inclined, and the lower end of the slide rails 5 is close to the inspection opening 3. A slider 51 is slidably provided on the slide rail 5, and the slider 51 can slide along the length direction of the slide rail 5, wherein one first connecting block 41 is hinged to one slider 51, and another first connecting block 41 is hinged to another slider 51.

[0034] Reference Figure 1 and Figure 2, a rotating shaft 52 is also rotatably arranged in the casing 1, and the length direction of the rotating shaft 52 is arranged along the width direction of the casing 1. A group of second connecting blocks 42 are symmetrically fixedly arranged on the bottom wall of the mounting plate 2, and a linkage rod is hingedly arranged on the second connecting block 42, and the end of the linkage rod away from the second connecting block 42 is rotatably connected to the rotating shaft 52. The casing 1 is provided with a rotating assembly 6 for driving the rotating shaft 52 to rotate in the casing 1. The dust screen 22 needs to be cleaned after long-term use. Since the dust screen 22 is arranged in the casing 1 and close to the air inlet 11 at the top, it is difficult to clean. At this time, the rotating shaft 52 is driven to rotate by the rotating assembly 6. The rotating shaft 52 rotates and drives the linkage rod to rotate at the same time. The linkage rod pulls the second connecting block 42 so that the mounting plate 2 passes through the inspection port 3. At the same time, the first connecting block 41 on the bottom wall of the mounting plate 2 drives the slider 51 to slide on the slide rail 5. The rail 5 can support the mounting plate 2, and the linkage rod drives the mounting plate 2 to rotate. The mounting plate 2 rotates from a horizontal state to a vertical state. The mounting plate 2 can be rotated to the inspection port 3 and maintained in a horizontal state. At this time, the dust screen 22 on the mounting plate 2 can be conveniently cleaned through the inspection port 3. When cleaning is completed, the rotating shaft 52 is driven in the reverse direction by the rotating assembly 6 to rotate, thereby driving the linkage rod to push the mounting plate 2. The first connecting block 41 drives the slider 51 to slide in the reverse direction on the slide rail 5, so that the mounting plate 2 is quickly reset horizontally at the air inlet 11.

[0035] Reference Figure 1 and Figure 2 The rotating assembly 6 includes a worm wheel 61, a worm 62 and a booster rod 63. The worm 62 is rotatably arranged on the housing 1. The worm wheel 61 is fixedly connected to the rotating shaft 52 and is coaxially arranged. The worm 62 and the worm wheel 61 are meshed with each other. One end of the worm 62 away from the inspection port 3 passes through the housing 1 and is connected to the booster rod 63. When it is necessary to drive the rotating shaft 52 to rotate to drive the linkage rod to push or pull the mounting plate 2, the worm 62 is driven to rotate through the booster rod 63, and the worm 62 is abutted against the worm wheel 61, thereby driving the worm wheel 61 and the rotating shaft 52 to rotate. The worm 62 and the worm wheel 61 can be quickly locked, and the mounting plate 2 is driven to rotate and the position of the mounting plate 2 is quickly fixed.

[0036] Reference Figure 1 and Figure 2 A tension block 521 is provided on the rotating shaft 52, and a tension spring 522 is provided on the bottom wall of the housing 1. One end of the tension spring 522 is connected to the bottom wall of the housing 1, and the other end of the tension spring 522 is connected to the tension block 521. When the mounting plate 2 is rotated to the air inlet 11, the rotating shaft 52 is driven to rotate by the rotating assembly 6 to drive the mounting plate 2 to rotate, and the tension spring 522 pulls the tension block 521, and the tension spring 522 applies force to the rotating shaft 52, driving the mounting plate 2 to rotate toward the air inlet 11, which is conducive to improving the stability of the mounting plate 2 at the air inlet 11.

[0037] Reference Figure 1 and Figure 3 , a connecting rod 311 is rotated and penetrated on the inspection door 31, one end of the connecting rod 311 is connected to an operating rod 312, and the other end of the connecting rod 311 is connected to a cleaning block 7, and a brush 81 that can abut against the surface of the dust net 22 is provided on the cleaning block 7. When the mounting plate 2 is rotated from the air inlet 11 to the inspection port 3, the inspection door 31 needs to be punched first, and the mounting plate 2 will rotate from a horizontal state to a vertical state. At this time, the dust net 22 is vertically arranged at the inspection port 3, and then the inspection door 31 is closed, and the bristles 81 on one side of the inspection door 31 will abut against the dust net 22, and the operating rod 312 is rotated. The operating rod 312 drives the cleaning block 7 to rotate through the connecting rod 311, and then drives the bristles 81 to clean the dust net 22. Cleaning is performed when the inspection door 31 is closed, which further improves the convenience of cleaning and reduces dust pollution.

[0038] Reference Figure 1 An observation port 9 is provided through the inspection door 31 , and a transparent plate 91 is provided in the observation port 9 . The transparent plate 91 is made of glass. The working conditions in the casing 1 can be observed from the observation port 9 through the transparent plate 91 , so as to understand the cleanliness of the dustproof net 22 conveniently.

[0039] Reference Figure 3 and Figure 4 A vibration groove 211 is provided on the inner wall of the dustproof port 21, and the vibration groove 211 is arranged along the thickness direction of the dustproof port 21. The dustproof net 22 is located in the vibration groove 211. A plurality of connecting bolts 212 threadedly connected to the bottom wall of the vibration groove 211 are penetrated by the dustproof net 22. A vibration spring 213 is sleeved on the connecting bolt 212. One end of the vibration spring 213 abuts against the bottom wall of the vibration groove 211, and the other end of the vibration spring 213 abuts against the bottom end of the dustproof net 22. A plurality of protrusions 221 are fixedly provided on the dustproof net 22, and an abutment block 82 is provided on the side of the cleaning block 7 facing the bristles 81. When the operating rod 312 is rotated to drive the cleaning block 7 to rotate, the abutment block 82 on the cleaning block 7 will abut against the protrusion 221 on the dustproof net 22, and the dustproof net 22 will be contracted into the vibration groove 211 under the force, and the cleaning block 7 continues to rotate, and the abutment block 82 will separate from the protrusion 221. At this time, under the abutment force of the vibration spring 213, the dustproof net 22 will collide with the connecting bolt 212, thereby causing the dustproof net 22 to produce a certain vibration, thereby achieving the purpose of improving the cleaning effect.

[0040] Reference Figure 3The cleaning block 7 includes a fixed block 71 and a mounting block 72. The fixed block 71 is connected to the connecting rod 311. The bristles 81 are arranged on the mounting block 72. A group of dovetail blocks 721 are symmetrically fixedly arranged on the side wall of the mounting block 72. The length direction of the dovetail blocks 721 is arranged along the width direction of the mounting block 72. The dovetail blocks 721 cooperate with the dovetail grooves 711 to realize the disassembly between the mounting plate 2 and the fixed block 71, thereby facilitating the cleaning and replacement of the bristles 81 after use and maintaining the cleaning effect of the bristles 81.

[0041] Reference Figure 1 A dust box 10 is provided on one side of the inspection door 31 facing the cleaning block 7. The dust box 10 is located below the cleaning block 7. The dust box 10 and the inspection door 31 are detachably connected by bolts. When the operating rod 312 is rotated to clean the dustproof net 22 with the cleaning block 7, dust can fall into the dust box 10 below the cleaning block 7, which is convenient for collecting dust and impurities.

[0042] The implementation principle of the embodiment of the present application is:

[0043] When the dust screen 22 needs to be cleaned, the inspection door 31 is first opened to move the inspection door 31 away from the inspection port 3, and then the power rod 63 is used to drive the worm 62 to rotate. The worm 62 and the worm wheel 61 are abutted against each other to drive the worm wheel 61 to rotate, thereby driving the rotating shaft 52 to rotate. The rotating shaft 52 drives the linkage rod to rotate while the rotating shaft 52 drives the linkage rod to rotate. The linkage rod pulls the second connecting block 42 so that the mounting plate 2 passes through the inspection port 3. At the same time, the first connecting block 41 on the bottom wall of the mounting plate 2 drives the slider 51 to slide on the slide rail 5. The slide rail 5 can support the mounting plate 2, and the linkage rod drives the mounting plate 2 to rotate. The mounting plate 2 rotates from a horizontal state to a vertical state. State, and the mounting plate 2 is just vertically located at the inspection port 3. At this time, the inspection door 31 is closed and the operating lever 312 is turned to use the bristles 81 to clean the dustproof net 22 on the mounting plate 2; when cleaning is completed, the worm 62 is used to reversely drive the rotating shaft 52 to rotate, thereby driving the linkage rod to push the mounting plate 2, and the first connecting block 41 drives the slider 51 to slide in the opposite direction on the slide rail 5, so that the mounting plate 2 is quickly and horizontally reset in the air inlet 11. The operation is convenient and quick, and at the same time, it occupies a small space in the fan, does not affect the normal use of the fan, has low cost, improves the convenience of cleaning, and extends the service life of the dustproof net 22.

[0044] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A heat dissipation fan, comprising a housing (1), an air inlet (11) being provided on one side of the housing (1), an air inlet pipe (12) being provided on the housing (1) and located at the air inlet (11), characterized in that: The casing (1) is provided with a mounting plate (2), the mounting plate (2) is provided with a dustproof port (21) corresponding to the air inlet (11), and a dustproof net (22) is provided in the dustproof port (21); one end of the casing (1) is provided with an inspection port (3) for the mounting plate (2) to pass through, and the casing (1) is provided with an inspection door (31) for sealing the inspection port (3) in a rotatable manner; a group of first connecting blocks (41) are symmetrically provided on the bottom wall of the mounting plate (2), and a group of slide rails (5) are symmetrically provided on the inner wall of the casing (1), and the slide rails (5) are symmetrically provided on the upper side thereof. A slider (51) is movably arranged on the housing (1), wherein one of the first connecting blocks (41) is hingedly connected to one slider (51), and the other of the first connecting blocks (41) is hingedly connected to the other slider (51); a rotating shaft (52) is rotatably arranged in the housing (1); a group of second connecting blocks (42) are symmetrically arranged on the bottom wall of the mounting plate (2); a linkage rod (53) is hingedly arranged on the second connecting block (42); one end of the linkage rod (53) away from the second connecting block (42) is rotatably connected to the rotating shaft (52); a rotating assembly (6) is arranged on the housing (1); The rotating assembly (6) is used to drive the rotating shaft (52) to rotate in the housing (1); a connecting rod (311) is arranged on the inspection door (31) to rotate and penetrate through the connecting rod (31), one end of the connecting rod (311) is connected to an operating rod (312), the other end of the connecting rod (311) is connected to a cleaning block (7), the cleaning block (7) is provided with bristles (81) that can abut against the surface of the dustproof net (22), a vibration groove (211) is provided on the inner wall of the dustproof port (21), the dustproof net (22) is located in the vibration groove (211), and the dustproof net (22) A plurality of connecting bolts (212) are provided on the upper surface and are threadedly connected to the bottom wall of the vibration groove (211); a vibration spring (213) is sleeved on the connecting bolt (212); one end of the vibration spring (213) abuts against the bottom wall of the vibration groove (211); the other end of the vibration spring (213) abuts against the bottom end of the dustproof net (22); a plurality of protrusions (221) are provided on the dustproof net (22); a contact block (82) is provided on one side of the cleaning block (7) facing the direction of the bristles (81); the contact block (82) can abut against the protrusion (221).

2. A heat dissipation fan according to claim 1, characterized in that: The rotating assembly (6) comprises a worm wheel (61), a worm (62) and a booster rod (63); the worm (62) is rotatably arranged on the housing (1); the worm wheel (61) and the rotating shaft (52) are fixedly connected and coaxially arranged; the worm (62) and the worm wheel (61) are meshed with each other; and one end of the worm (62) away from the inspection port (3) passes through the housing (1) and is connected to the booster rod (63).

3. A heat dissipation fan according to claim 1, characterized in that: A tensioning block (521) is provided on the rotating shaft (52), and a tensioning spring (522) is provided on the bottom wall of the housing (1); one end of the tensioning spring (522) is interconnected with the bottom wall of the housing (1), and the other end of the tensioning spring (522) is interconnected with the tensioning block (521).

4. The heat dissipation fan according to claim 1, characterized in that: The cleaning block (7) comprises a fixed block (71) and a mounting block (72); the fixed block (71) is connected to the connecting rod (311); the bristles (81) are arranged on the mounting block (72); a group of dovetail blocks (721) are symmetrically arranged on the side wall of the mounting block (72); and the fixed block (71) is provided with a dovetail groove (711) for the dovetail blocks (721) to be inserted and abutted against each other.

5. The heat dissipation fan according to claim 1, characterized in that: An observation port (9) is provided through the inspection door (31), and a transparent plate (91) is provided in the observation port (9).

6. The heat dissipation fan according to claim 1, characterized in that: A dust collecting box (10) is provided on one side of the inspection door (31) facing the cleaning block (7); the dust collecting box (10) is located below the cleaning block (7).

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