Industrial centrifugal cooling fan

Abstract

The invention discloses an industrial centrifugal cooling fan, which relates to the technical field of cooling fans. The industrial centrifugal cooling fan, through the cooperation of a semi-circular positioning frame and an arc-shaped filter screen, can drive the limit end plate to drive the transmission plate to slide toward the side of the air inlet cover when the fan body is running, so that the arc-shaped filter screen automatically extends, until the fan body stops and the limit end plate is reset, the arc-shaped filter screen can be retracted, the dust filtered out inside can be pushed out, and the dust can be automatically collected through the cooperation of a collection box. Compared with traditional equipment, it can effectively avoid dust accumulation and affect the normal operation of the equipment, and at the same time improve the use effect and maintenance convenience of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of heat dissipation fans, in particular to an industrial centrifugal heat dissipation fan. Background Art

[0002] There are many application places of centrifugal fans. After the fluid is sucked in from the axial direction of the fan, the centrifugal force is used to throw the fluid out from the circumferential direction, such as industrial fans, blowers, range hoods, etc. Referring to the Chinese patent, the announcement number is "CN113530859B" "Centrifugal cooling fan", which points out that the air gap between the blades of the existing centrifugal fan is large, and therefore it is difficult to control the airflow and easily cause backflow, resulting in insufficient wind pressure, thereby affecting the heat dissipation effect; but the device still has the problem that dust in the air is easy to accumulate inside the device and on the surface of the impeller, resulting in the operation of the device being affected and inconvenient for maintenance and cleaning. In this regard, we propose an industrial centrifugal cooling fan to solve the above problems. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides an industrial centrifugal cooling fan, which solves the problems raised in the above-mentioned background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: an industrial centrifugal cooling fan, comprising a fan body, an air inlet cover and an exhaust port are respectively provided on the side and top of the fan body, and an impeller body is rotatably connected inside the fan body;

[0005] The outside of the air inlet cover is fixedly connected with a filter cover, and semi-circular positioning frames are fixedly installed on both sides of the inside of the filter cover. A limiting end plate is provided on the side of the semi-circular positioning frame close to the air inlet cover, and an arc-shaped filter screen is fixedly installed between the limiting end plate and the corresponding semi-circular positioning frame. The limiting end plate is used to slide toward one side of the air inlet cover under force when the fan body is running, so as to extend the arc-shaped filter screen and realize the filtering of air;

[0006] Positioning shafts are fixedly installed at both ends of the semi-annular positioning frame, and inner sliding rods are slidably connected inside the positioning shafts. A transmission plate is fixedly installed on the outside of the limiting end plate, and the end of the inner sliding rod is fixedly connected to the corresponding transmission plate. A support spring is fixedly connected between one end of the inner sliding rod located inside the positioning shaft and the inner wall thereof.

[0007] Preferably, an elastic sealing sheet is fixedly mounted on the side of the limiting end plate to ensure the sealing between the two limiting end plates.

[0008] Preferably, a bellows expansion tube is installed inside the positioning shaft, the bellows expansion tube is located inside the support spring, and both ends of the bellows expansion tube are respectively connected to the inside of the positioning shaft and the end of the inner slide rod, and a plurality of exhaust holes are opened inside the bellows expansion tube.

[0009] Preferably, a driving motor is fixedly mounted on the outer side of the fan body, and a coupling is provided between the output end of the driving motor and the impeller body for driving the impeller body to rotate inside the fan body.

[0010] Preferably, a collecting box is fixedly installed at the bottom of the filter cover, and the collecting box is used to collect filtered dust. The top surface of the collecting box is open, and an arc-shaped sealing plate is slidably connected to the top surface. A plurality of transmission plates are fixedly installed above the arc-shaped sealing plate, which are used to drive the arc-shaped sealing plate to slide on the top surface of the collecting box to seal the collecting box when the fan body is running.

[0011] Preferably, a positioning end is fixedly installed at the bottom of the arc-shaped sealing plate, and a reset spring is fixedly installed between the positioning end and the inner wall of the collection box for driving the arc-shaped sealing plate to reset when the fan body stops running.

[0012] Preferably, a supporting top plate is fixedly mounted on the bottom of the transmission plate, and the supporting top plate is used to push the arc-shaped filter screen when the transmission plate is reset.

[0013] Preferably, cleaning components are provided on the upper and lower sides of the semi-annular positioning frame for cleaning the arc-shaped filter screen. The cleaning component includes a limit frame, and a cleaning shaft is rotatably connected inside the limit frame, and a cleaning paddle is fixedly installed on the outside of the cleaning shaft. The cleaning paddle is used to clean the arc-shaped filter screen as the cleaning shaft runs. A transmission component is provided between the cleaning shaft and the corresponding transmission plate to drive the cleaning shaft and the cleaning paddle to operate.

[0014] Preferably, the transmission assembly includes a transmission rope, the transmission rope is wound around the end of the corresponding cleaning shaft, and the end of the transmission rope is fixedly connected to the end of the corresponding transmission plate.

[0015] Preferably, a spring body is sleeved on the end of the cleaning shaft to store force when the cleaning shaft rotates.

[0016] The present invention provides an industrial centrifugal cooling fan. Compared with the prior art, it has the following beneficial effects:

[0017] (1) The industrial centrifugal cooling fan, through the cooperation of the semi-circular positioning frame and the arc filter, can drive the limit end plate to drive the transmission plate to slide toward the side of the air inlet cover when the fan body is running, so that the arc filter automatically extends until the fan body stops and the limit end plate is reset, so that the arc filter can retract and push out the dust filtered out inside. The dust is automatically collected through the cooperation of the collection box. Compared with traditional equipment, it can effectively avoid dust accumulation and affect the normal operation of the equipment, and at the same time improve the use effect and maintenance convenience of the equipment.

[0018] (2) The industrial centrifugal cooling fan, through the setting of the cleaning component, can make the cleaning shaft rod drive the cleaning plate to rotate through the cooperation of the spring body when the transmission plate is reset, so as to hit the arc filter and the semi-circular positioning frame, so that the dust attached to the surface of the arc filter can be further detached, thereby realizing the self-cleaning operation of the arc filter and ensuring the subsequent filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the fan body of the present invention;

[0021] Figure 3 For the present invention Figure 2 Side view;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the filter cover of the present invention;

[0023] Figure 5 For the present invention Figure 4 Side view;

[0024] Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in the middle;

[0025] Figure 7 This is a schematic diagram of the structure of the semi-annular positioning frame and the arc-shaped filter screen of the present invention;

[0026] Figure 8 For the present invention Figure 7 Enlarged structural diagram at B in the middle.

[0027] In the figure: 1. fan body; 2. air inlet cover; 3. exhaust port; 4. impeller body; 5. drive motor; 6. filter cover; 7. collection box; 8. arc sealing plate; 801, transmission plate; 9. positioning end; 901, return spring; 10. semi-annular positioning frame; 11. limiting end plate; 1101, elastic sealing plate; 12. arc filter; 13. transmission plate; 1301, support top plate; 14. positioning shaft rod; 1401, inner slide rod; 1402, support spring; 1403, corrugated telescopic tube; 15. limiting frame; 1501, cleaning shaft rod; 1502, cleaning plate; 1503, spring body; 1504, transmission rope. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 8 The present invention provides two technical solutions, which specifically include the following embodiments:

[0030] Embodiment 1:

[0031] In an embodiment of the present invention, an industrial centrifugal cooling fan includes a fan body 1, an air inlet cover 2 and an exhaust port 3 are respectively provided on the side and the top of the fan body 1, and an impeller body 4 is rotatably connected inside the fan body 1. The impeller body 4 is an existing component, which is used to rotate inside the fan body 1 with the impeller body 4, so that centrifugal force is generated inside the fan body 1 to achieve air exchange operation;

[0032] Furthermore, the outside of the air inlet cover 2 is fixedly connected with a filter cover 6, and semi-circular positioning frames 10 are fixedly installed on both sides of the inside of the filter cover 6. A limiting end plate 11 is provided on the side of the semi-circular positioning frame 10 close to the air inlet cover 2, and an arc-shaped filter screen 12 is fixedly installed between the limiting end plate 11 and the corresponding semi-circular positioning frame 10. The limiting end plate 11 is used to slide toward the side of the air inlet cover 2 when the fan body 1 is running, so as to extend the arc-shaped filter screen 12 to filter the air;

[0033] When in use, as the fan body 1 runs, the limit end plate 11 inside the filter cover 6 is subjected to the pressure of the air and slides toward the side of the air inlet cover 2. At this time, the arc filter screens 12 on both sides will stretch through the operation of the limit end plate 11 until the arc filter screens 12 on both sides are truncated. Figure 4-Figure 8 In this case, the arc-shaped filter screen 12 is in an extended state;

[0034] Specifically, both ends of the semi-circular positioning frame 10 are fixedly installed with positioning shafts 14, and the interior of the positioning shafts 14 is slidably connected with inner slide bars 1401, the outer side of the limiting end plate 11 is fixedly installed with a transmission plate 13, the ends of the inner slide bars 1401 are fixedly connected to the corresponding transmission plates 13, and a support spring 1402 is fixedly connected between one end of the inner slide bar 1401 located inside the positioning shaft 14 and the inner wall thereof;

[0035] Specifically, when the limiting end plate 11 is forced to slide toward the side of the air inlet cover 2, the inner slide bar 1401 can be forced to be pulled out from the inside of the positioning shaft rod 14, stretching the support spring 1402, until the fan body 1 stops running, the limiting end plate 11 can drive the inner slide bar 1401 to retract into the inside of the positioning shaft rod 14 through the cooperation of the support spring 1402, until it reaches the initial position to complete the reset operation;

[0036] Specifically, when the limiting end plate 11 is reset, the arc filter 12 can be pushed by the limiting end plate 11 to move toward the side of the semi-circular positioning frame 10 until the dust stored inside is discharged, thereby realizing automatic dust discharge operation;

[0037] Specifically, an elastic sealing sheet 1101 is fixedly installed on the side of the limiting end plate 11 to ensure the sealing between the two limiting end plates 11. By setting two limiting end plates 11, it is easy to disassemble the equipment and to perform maintenance on the arc filter 12.

[0038] Furthermore, a bellows expansion tube 1403 is installed inside the positioning shaft 14, the bellows expansion tube 1403 is located inside the support spring 1402, and the two ends of the bellows expansion tube 1403 are respectively connected to the inside of the positioning shaft 14 and the end of the inner slide bar 1401, and a plurality of exhaust holes are opened inside the bellows expansion tube 1403;

[0039] Specifically, through the setting of the bellows expansion tube 1403, when the equipment is running, the limit end plate 11 is forced to drive the arc filter screen 12 to extend, and at this time, as the inner slide bar 1401 slides outward, the bellows expansion tube 1403 can be driven to extend, so that external air enters the bellows expansion tube 1403 through multiple exhaust holes. When the equipment stops running, the bellows expansion tube 1403 can be discharged through multiple exhaust holes through the cooperation of the support spring 1402 until the inner slide bar 1401 is reset. In this way, the time for the limit end plate 11 to reset can be effectively extended, so as to avoid the limit end plate 11 immediately resetting when the equipment stops, thereby affecting the dust filtering effect of the equipment.

[0040] Specifically, a drive motor 5 is fixedly installed on the outside of the fan body 1, and a coupling is provided between the output end of the drive motor 5 and the impeller body 4, which is used to drive the impeller body 4 to rotate inside the fan body 1. The drive motor 5 is an existing device and will not be described in detail here;

[0041] Furthermore, a collecting box 7 is fixedly installed at the bottom of the filter cover 6, and the collecting box 7 is used to collect filtered dust. The top surface of the collecting box 7 is an open type, and an arc-shaped sealing plate 8 is slidably connected to the top surface. A plurality of transmission plates 801 are fixedly installed above the arc-shaped sealing plate 8, which are used to drive the arc-shaped sealing plate 8 to slide on the top surface of the collecting box 7 to seal the collecting box 7 when the fan body 1 is running; when the equipment is running, the arc-shaped sealing plate 8 is located above the collecting box 7 to seal it to prevent the dust stored inside from entering the filter cover 6 with the air; when the equipment stops, the arc-shaped sealing plate 8 cancels the seal on the collecting box 7, so that the dust collected by the arc-shaped filter screen 12 can enter the collecting box 7, further improving the maintenance convenience of the equipment, and at the same time preventing the accumulation of dust from affecting the dust filtering effect of the equipment;

[0042] Furthermore, a positioning end 9 is fixedly installed at the bottom of the arc-shaped sealing plate 8, and a reset spring 901 is fixedly installed between the positioning end 9 and the inner wall of the collection box 7, which is used to drive the arc-shaped sealing plate 8 to reset when the fan body 1 stops running;

[0043] Furthermore, a supporting top plate 1301 is fixedly installed at the bottom of the transmission plate 13, and the supporting top plate 1301 is used to push the arc filter 12 when the transmission plate 13 is reset, so as to prevent the folds inside the arc filter 12 from blocking the falling of dust when the arc filter 12 is extended;

[0044] The size of the arc filter 12 exceeds the half ring, that is, when the arc filter 12 on both sides is extended through the cooperation of the limiting end plate 11, the ends of the arc filter 12 on both sides can overlap, thereby preventing air from passing between the two arc filter screens 12 and entering the fan body 1.

[0045] Embodiment 2: Based on embodiment 1, in the embodiment of the present invention, an industrial centrifugal cooling fan includes a fan body 1, an air inlet cover 2 and an exhaust port 3 are respectively provided on the side and the top of the fan body 1, and an impeller body 4 is rotatably connected inside the fan body 1. The impeller body 4 is an existing component, which is used to rotate inside the fan body 1 with the impeller body 4, so that centrifugal force is generated inside the fan body 1 to realize air exchange operation;

[0046] Furthermore, the outside of the air inlet cover 2 is fixedly connected with a filter cover 6, and semi-circular positioning frames 10 are fixedly installed on both sides of the inside of the filter cover 6. A limiting end plate 11 is provided on the side of the semi-circular positioning frame 10 close to the air inlet cover 2, and an arc-shaped filter screen 12 is fixedly installed between the limiting end plate 11 and the corresponding semi-circular positioning frame 10. The limiting end plate 11 is used to slide toward the side of the air inlet cover 2 when the fan body 1 is running, so as to extend the arc-shaped filter screen 12 to filter the air;

[0047] When in use, as the fan body 1 runs, the limit end plate 11 inside the filter cover 6 is subjected to the pressure of the air and slides toward the side of the air inlet cover 2. At this time, the arc filter screens 12 on both sides will stretch through the operation of the limit end plate 11 until the arc filter screens 12 on both sides are truncated. Figure 4-Figure 8 In this case, the arc-shaped filter screen 12 is in an extended state;

[0048] Specifically, both ends of the semi-circular positioning frame 10 are fixedly installed with positioning shafts 14, and the interior of the positioning shafts 14 is slidably connected with inner slide bars 1401, the outer side of the limiting end plate 11 is fixedly installed with a transmission plate 13, the ends of the inner slide bars 1401 are fixedly connected to the corresponding transmission plates 13, and a support spring 1402 is fixedly connected between one end of the inner slide bar 1401 located inside the positioning shaft 14 and the inner wall thereof;

[0049] Specifically, when the limiting end plate 11 is forced to slide toward the side of the air inlet cover 2, the inner slide bar 1401 can be forced to be pulled out from the inside of the positioning shaft rod 14, stretching the support spring 1402, until the fan body 1 stops running, the limiting end plate 11 can drive the inner slide bar 1401 to retract into the inside of the positioning shaft rod 14 through the cooperation of the support spring 1402, until it reaches the initial position to complete the reset operation;

[0050] Specifically, when the limiting end plate 11 is reset, the arc filter 12 can be pushed by the limiting end plate 11 to move toward the side of the semi-circular positioning frame 10 until the dust stored inside is discharged, thereby realizing automatic dust discharge operation;

[0051] Specifically, an elastic sealing sheet 1101 is fixedly installed on the side of the limiting end plate 11 to ensure the sealing between the two limiting end plates 11. By setting two limiting end plates 11, it is easy to disassemble the equipment and to perform maintenance on the arc filter 12.

[0052] Furthermore, a bellows expansion tube 1403 is installed inside the positioning shaft 14, the bellows expansion tube 1403 is located inside the support spring 1402, and the two ends of the bellows expansion tube 1403 are respectively connected to the inside of the positioning shaft 14 and the end of the inner slide bar 1401, and a plurality of exhaust holes are opened inside the bellows expansion tube 1403;

[0053] Specifically, through the setting of the bellows expansion tube 1403, when the equipment is running, the limit end plate 11 is forced to drive the arc filter screen 12 to extend, and at this time, as the inner slide bar 1401 slides outward, the bellows expansion tube 1403 can be driven to extend, so that external air enters the bellows expansion tube 1403 through multiple exhaust holes. When the equipment stops running, the bellows expansion tube 1403 can be discharged through multiple exhaust holes through the cooperation of the support spring 1402 until the inner slide bar 1401 is reset. In this way, the time for the limit end plate 11 to reset can be effectively extended, so as to avoid the limit end plate 11 being reset immediately when the equipment stops, thereby affecting the dust filtering effect of the equipment.

[0054] Specifically, a drive motor 5 is fixedly installed on the outside of the fan body 1, and a coupling is provided between the output end of the drive motor 5 and the impeller body 4, which is used to drive the impeller body 4 to rotate inside the fan body 1. The drive motor 5 is an existing device and will not be described in detail here;

[0055] Furthermore, a collecting box 7 is fixedly installed at the bottom of the filter cover 6, and the collecting box 7 is used to collect filtered dust. The top surface of the collecting box 7 is an open type, and an arc-shaped sealing plate 8 is slidably connected to the top surface. A plurality of transmission plates 801 are fixedly installed above the arc-shaped sealing plate 8, which are used to drive the arc-shaped sealing plate 8 to slide on the top surface of the collecting box 7 to seal the collecting box 7 when the fan body 1 is running; when the equipment is running, the arc-shaped sealing plate 8 is located above the collecting box 7 to seal it to prevent the dust stored inside from entering the filter cover 6 with the air; when the equipment stops, the arc-shaped sealing plate 8 cancels the seal on the collecting box 7, so that the dust collected by the arc-shaped filter screen 12 can enter the collecting box 7, further improving the maintenance convenience of the equipment, and at the same time preventing the accumulation of dust from affecting the dust filtering effect of the equipment;

[0056] Furthermore, a positioning end 9 is fixedly installed at the bottom of the arc-shaped sealing plate 8, and a reset spring 901 is fixedly installed between the positioning end 9 and the inner wall of the collection box 7, which is used to drive the arc-shaped sealing plate 8 to reset when the fan body 1 stops running;

[0057] Furthermore, a supporting top plate 1301 is fixedly installed at the bottom of the transmission plate 13, and the supporting top plate 1301 is used to push the arc filter 12 when the transmission plate 13 is reset, so as to prevent the folds inside the arc filter 12 from blocking the falling of dust when the arc filter 12 is extended;

[0058] Further, cleaning components are provided on both the upper and lower sides of the semi-circular positioning frame 10 for cleaning the arc-shaped filter screen 12. The cleaning components include a limit frame 15, and a cleaning shaft 1501 is rotatably connected inside the limit frame 15, and a cleaning plate 1502 is fixedly installed on the outside of the cleaning shaft 1501. The cleaning plate 1502 is used to clean the arc-shaped filter screen 12 as the cleaning shaft 1501 runs. A transmission component is provided between the cleaning shaft 1501 and the corresponding transmission plate 13, which is used to drive the cleaning shaft 1501 and the cleaning plate 1502 to run;

[0059] The transmission assembly includes a transmission rope 1504, which is wound around the end of the corresponding cleaning shaft 1501, and the end of the transmission rope 1504 is fixedly connected to the end of the corresponding transmission plate 13;

[0060] The end of the cleaning shaft 1501 is sleeved with a spring body 1503, which is used to store force when the cleaning shaft 1501 rotates;

[0061] Specifically, when the transmission plate 13 slides toward the side of the air inlet cover 2 along with the limiting end plate 11, the wound transmission rope 1504 can be stretched. At this time, the cleaning shaft 1501 rotates and accumulates force through the spring body 1503. When the transmission plate 13 is reset, the cleaning shaft 1501 can drive the cleaning plate 1502 to rotate through the cooperation of the spring body 1503, thereby hitting the arc filter screen 12 and the semi-annular positioning frame 10, so that the dust attached to the surface of the arc filter screen 12 can be further detached, thereby realizing self-cleaning of the arc filter screen 12 and ensuring the subsequent filtering effect.

[0062] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0063] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. An industrial centrifugal cooling fan, comprising a fan body (1), characterized in that: An air inlet cover (2) and an air outlet (3) are respectively provided on the side and top of the fan body (1), and an impeller body (4) is rotatably connected inside the fan body (1); The outside of the air inlet cover (2) is fixedly connected to a filter cover (6), and semi-annular positioning frames (10) are fixedly installed on both sides of the inside of the filter cover (6). A limiting end plate (11) is provided on the side of the semi-annular positioning frame (10) close to the air inlet cover (2), and an arc-shaped filter screen (12) is fixedly installed between the limiting end plate (11) and the corresponding semi-annular positioning frame (10). The limiting end plate (11) is used to slide toward the side of the air inlet cover (2) under force when the fan body (1) is running, so as to extend the arc-shaped filter screen (12) and achieve filtering of the air; A positioning shaft (14) is fixedly installed at both ends of the semi-annular positioning frame (10), and an inner sliding rod (1401) is slidably connected inside the positioning shaft (14), a transmission plate (13) is fixedly installed outside the limit end plate (11), and the end of the inner sliding rod (1401) is fixedly connected to the corresponding transmission plate (13), and a support spring (1402) is fixedly connected between one end of the inner sliding rod (1401) located inside the positioning shaft (14) and the inner wall thereof; A bellows telescopic tube (1403) is installed inside the positioning shaft (14), the bellows telescopic tube (1403) is located inside the support spring (1402), and the two ends of the bellows telescopic tube (1403) are respectively connected to the inside of the positioning shaft (14) and the end of the inner slide rod (1401), and a plurality of exhaust holes are opened inside the bellows telescopic tube (1403).

2. An industrial centrifugal cooling fan according to claim 1, characterized in that: An elastic sealing sheet (1101) is fixedly mounted on the side of the limiting end plate (11) to ensure the sealing between the two limiting end plates (11).

3. An industrial centrifugal cooling fan according to claim 1, characterized in that: A drive motor (5) is fixedly mounted on the outside of the fan body (1), and a coupling is provided between the output end of the drive motor (5) and the impeller body (4) for driving the impeller body (4) to rotate inside the fan body (1).

4. The industrial centrifugal cooling fan according to claim 1, characterized in that: A collecting box (7) is fixedly mounted on the bottom of the filter cover (6), and the collecting box (7) is used to collect filtered dust. The top surface of the collecting box (7) is open, and a curved sealing plate (8) is slidably connected to the top surface. A plurality of transmission plates (801) are fixedly mounted above the curved sealing plate (8), and are used to drive the curved sealing plate (8) to slide on the top surface of the collecting box (7) when the fan body (1) is running, so as to seal the collecting box (7).

5. An industrial centrifugal cooling fan according to claim 4, characterized in that: A positioning end head (9) is fixedly mounted on the bottom of the arc-shaped sealing plate (8), and a return spring (901) is fixedly mounted between the positioning end head (9) and the inner wall of the collection box (7) for driving the arc-shaped sealing plate (8) to return to its original position when the fan body (1) stops running.

6. An industrial centrifugal cooling fan according to claim 1, characterized in that: A supporting top plate (1301) is fixedly mounted on the bottom of the transmission plate (13), and the supporting top plate (1301) is used to push the arc-shaped filter screen (12) when the transmission plate (13) is reset.

7. An industrial centrifugal cooling fan according to claim 1, characterized in that: The semi-annular positioning frame (10) is provided with a cleaning assembly on both the upper and lower sides thereof, and is used for cleaning the arc-shaped filter screen (12). The cleaning assembly comprises a limit frame (15), the limit frame (15) is rotatably connected to a cleaning shaft (1501) inside, and a cleaning plate (1502) is fixedly installed on the outside of the cleaning shaft (1501), and the cleaning plate (1502) is used for cleaning the arc-shaped filter screen (12) when the cleaning shaft (1501) moves. A transmission assembly is provided between the cleaning shaft (1501) and the corresponding transmission plate (13), and is used for driving the cleaning shaft (1501) and the cleaning plate (1502) to move.

8. An industrial centrifugal cooling fan according to claim 7, characterized in that: The transmission assembly comprises a transmission rope (1504), wherein the transmission rope (1504) is wound around the end of the corresponding cleaning shaft (1501), and the end of the transmission rope (1504) is fixedly connected to the end of the corresponding transmission plate (13).

9. An industrial centrifugal cooling fan according to claim 8, characterized in that: The end of the cleaning shaft (1501) is sleeved with a spring body (1503) for storing force when the cleaning shaft (1501) rotates.

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