Energy-saving centrifugal fan dust scattering device

Abstract

The invention discloses an energy-saving centrifugal fan dust scattering device, and relates to the technical field of centrifugal fan heat dissipation. A machine cover is fixedly installed on the front face of the machine box, an air outlet bin is fixedly installed on one side of the machine box, an air outlet communicated with the interior of the machine box is formed in an inner cavity of the machine box, a side box is fixedly installed on the front face of the air outlet bin, and a box cover is connected to one side of the front face of the air outlet bin through a hinge. An impeller is rotatably connected to the center of the case, a guide hole is formed in one side of the air outlet bin, an embedding groove is formed in the side, close to the guide hole, of the air outlet bin, a guide groove is formed in the inner wall of one side of the embedding groove, the shaking mechanism comprises a rack plate, a fixing frame, a dustproof net and guide blocks, and the two guide blocks are slidably connected into the guide groove. The problem that dust on the surface of a traditional fixed dustproof net is prone to being gradually accumulated in a specific area of the net face due to airflow disturbance and the gravity effect is solved, and meanwhile the effect of keeping net holes unobstructed is achieved.

Description

Technical Field

[0001] This invention relates to the field of centrifugal fan heat dissipation technology, and in particular to an energy-saving centrifugal fan dust collection device. Background Technology

[0002] Energy-saving centrifugal fan dust collection devices are specialized equipment used in industrial and civil buildings to improve air quality and energy efficiency. With increasing global emphasis on environmental protection and energy conservation, traditional fan systems are gradually being phased out due to high energy consumption, noise levels, and environmental pollution. As a crucial ventilation device, optimizing the performance and improving the energy efficiency of centrifugal fans is particularly important. The background of this device can be traced back to the accelerated industrialization in recent years, especially in industries such as mining, construction, and chemicals, where the emission of dust and harmful gases has become increasingly serious. This not only affects the safety and health of the working environment but also has a negative impact on the surrounding ecosystem. Therefore, developing efficient dust collection devices to reduce dust emissions and improve air quality has become an urgent problem to be solved.

[0003] A search revealed a utility model patent with Chinese patent publication number CN222746330U, which discloses a dust-exhausting centrifugal fan, including a frame and a housing. The frame is connected to the housing via support legs, and an air outlet hood is connected to one side wall of the housing. A motor is mounted on the other side of the housing, and the output end of the motor is connected to a rotating shaft via a belt drive structure. A cover is provided on the outside of the belt drive structure. Fan blades are connected to the rotating shaft and are located inside the housing. A dust collection screen is provided on the outside of the fan blades. This dust-exhausting centrifugal fan achieves self-cleaning by having external clean water enter through a pipe and sprayed outwards onto the dust collection screen through nozzles. Simultaneously, the water mist sprayed from the nozzles accelerates the settling of dust in front of the dust collector while rinsing the dust collection screen. However, the aforementioned dust-exhausting centrifugal fan has the following shortcomings: Although the brush plate of the above device will automatically rotate to clean the filter cover used to filter larger solid impurities when the fan blades are driven to rotate by the shaft, ensuring the normal operation of the filter cover and preventing large solid impurities from entering the device and damaging the fan blades, the dust prevention work at the air outlet is carried out by stacking multiple sets of filter screens. As a result, dust will accumulate on its surface, thus forming a blockage and reducing its function. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an energy-saving centrifugal fan dust collection device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An energy-saving centrifugal fan dust collection device includes a casing with a cover fixedly installed on the front. An air outlet chamber is fixedly installed on one side of the casing, and an air outlet communicating with the inside of the casing is opened in its inner cavity. A side box is fixedly installed on the front of the air outlet chamber, and a box cover is connected to one side of its front by a hinge. A shaking mechanism is provided inside the side box, and an impeller is rotatably connected to the center of the casing.

[0006] Preferably, a guide hole is provided on one side of the air outlet chamber, and a groove is provided on the side of the air outlet chamber near the guide hole, and a guide groove is provided on the inner wall of one side of the groove.

[0007] Furthermore: the vibration mechanism includes a rack plate, a fixing frame, a dustproof net and guide blocks, and the two guide blocks are slidably connected in the guide groove; A rack plate, which is fixedly connected to the outer back wall of two guide blocks; The two fixing brackets are bolted to the top and bottom sides of the rack plate, respectively.

[0008] Based on the aforementioned solution: the dustproof net is connected to two fixed frames on opposite sides by screws; The top and bottom of the dustproof net are wider than the inner diameter of the top and bottom of the air outlet.

[0009] A preferred embodiment of the aforementioned solution is that the vibration mechanism further includes a drive gear, a linkage gear, a fan, a transmission belt, a rotating shaft, an L-shaped fixing plate, and a mounting plate. The L-shaped fixing plate is fixedly connected to one side of the outer wall of the air outlet chamber; The pivot rotates through the middle section of the corner of the L-shaped fixed plate.

[0010] As a further embodiment of the present invention: the driving tooth is threaded to one end of the rotating shaft, and the circumference of the driving tooth has only a pair of mutually symmetrical teeth; the linkage tooth is rotatably connected to the side of the L-shaped fixing plate near the top of the driving tooth, and the circumference of the linkage tooth has half a circle of teeth.

[0011] Meanwhile, the driving teeth, the linkage teeth, and the rack plate mesh with each other.

[0012] As a preferred embodiment of the present invention: the mounting plate is fixedly connected to the inner wall of the air outlet near the back of the dustproof net by bolts, and one end of the mounting plate is rotatably connected to a guide shaft.

[0013] Meanwhile, the fan is threaded to the circumference of the end of the guide shaft, and transmission wheels are fixedly installed on the outer circumference of the rotating shaft and the guide shaft, respectively.

[0014] As a preferred embodiment of the present invention: the two ends of the transmission belt are respectively sleeved on the circumference of the two transmission wheels, the two transmission wheels and the transmission belt form a transmission engagement, the fan is located at the center of the air outlet, and the transmission belt passes through the guide hole.

[0015] The beneficial effects of this invention are as follows: 1. This energy-saving centrifugal fan dust collection device, through the vertical sliding of the guide block in the guide groove, can effectively drive the dustproof net in the middle of the fixed frame on one side of the rack plate to move synchronously up and down, so that the dust attachment points on the net surface are more dispersed and will not concentrate in one place to form a thick layer. At the same time, the airflow can act more comprehensively on the dustproof net, blowing away some of the dust that has already adhered, and the moving dustproof net can reduce the accumulation of static electricity to a certain extent, reducing the adsorption effect of static electricity on dust, thereby reducing dust accumulation.

[0016] 2. This energy-saving centrifugal fan dust collection device operates by discharging incoming air through the outlet when the centrifugal fan is running. During this process, the airflow at the outlet drives the fan to rotate, which in turn drives the transmission wheel on the circumference of the guide shaft to rotate. With the aid of a transmission belt, one end of the shaft rotates synchronously. The drive tooth at the end of the shaft rotates accordingly and meshes with the rack plate. When the drive tooth rotates, it moves the rack plate downwards, and the guide block on one side slides downwards within the guide groove, thus causing the dust screen to move downwards synchronously. When the other tooth of the drive tooth contacts and meshes with the linkage tooth, the linkage tooth reverses, driving the rack plate upwards, and the guide block slides upwards within the guide groove, causing the dust screen to rise synchronously. This cycle repeats, allowing the dust screen to move up and down within the groove. This design cleverly solves the problem of traditional fixed dust screens. Dust on the surface of traditional dust screens easily accumulates in specific areas due to airflow disturbance and gravity, while this design keeps the dust screen clean and the mesh openings clear. Air encounters less resistance when passing through the dust filter, allowing it to be discharged more smoothly from the outlet, significantly improving the ventilation efficiency of the centrifugal fan.

[0017] 3. This energy-saving centrifugal fan dust collection device reduces ventilation resistance and fan motor load by keeping the dust filter and air outlet clean, thus reducing heat generation and wear and effectively extending the motor's service life. Furthermore, the vibration mechanism design embodies energy conservation and environmental protection principles, utilizing the centrifugal fan's exhaust power to move the dust filter without requiring additional energy consumption. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of an energy-saving centrifugal fan dust collection device proposed in this invention; Figure 2 This is a schematic diagram of the internal structure of an energy-saving centrifugal fan dust collection device proposed in this invention; Figure 3 This is a side view of the dust collection device for an energy-saving centrifugal fan proposed in this invention. Figure 4 This is a schematic diagram of the main structure of the shaking mechanism in an energy-saving centrifugal fan dust collection device proposed in this invention; Figure 5 This is a schematic diagram of the back structure of the shaking mechanism in an energy-saving centrifugal fan dust collection device proposed in this invention; Figure 6 This is a partial structural schematic diagram of an energy-saving centrifugal fan dust collection device proposed in this invention; Figure 7 This is a diagram illustrating the working steps of an energy-saving centrifugal fan dust collection device proposed in this invention.

[0019] In the diagram: 1. Cover; 2. Chassis; 3. Side box; 4. Air outlet chamber; 5. Box cover; 6. Vibration mechanism; 7. Air outlet; 8. Embedded groove; 9. Guide groove; 10. Guide hole; 601. Drive gear; 602. Linkage gear; 603. Rack plate; 604. Fixing frame; 605. Dustproof net; 606. Guide block; 607. Fan; 608. Transmission belt; 609. Rotating shaft; 610. L-shaped fixing plate; 611. Mounting plate. Detailed Implementation

[0020] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] Example 1: An energy-saving centrifugal fan dust collection device, such as Figure 1 and Figure 2As shown, the device includes a chassis 2. The front of the chassis 2 is fixed with a cover 1 by bolts, and an air outlet 4 is fixed to one side of the chassis 2 by bolts. An air outlet 7 is provided at the end of the air outlet 4, and a side box 3 is fixed to one side of the air outlet 4 by bolts. A box cover 5 is connected to one side of the side box 3 by a hinge. A shaking mechanism 6 is provided inside the side box 3, and an impeller is rotatably connected inside the chassis 2.

[0025] To address the problem of dust accumulation at the air outlet 7 of traditional devices; such as... Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a guide hole 10 is provided on one side of the air outlet chamber 4, and a groove 8 is provided on the side of the air outlet chamber 4 near the guide hole 10. A guide groove 9 is provided on the inner wall of one side of the groove 8. The vibration mechanism 6 includes a rack plate 603, a fixing frame 604, a dustproof net 605, and a guide block 606, with the two guide blocks 606 slidably connected in the guide groove 9; A rack plate 603 is fixedly connected to the outer back wall of two guide blocks 606; Fixing bracket 604, two fixing brackets 604 are respectively connected to the top side and the bottom side of the rack plate 603 by bolts; Dustproof net 605 is connected to two fixed brackets 604 on opposite sides by screws; The top and bottom of the dust filter 605 are wider than the inner diameter of the top and bottom of the air outlet 7; By sliding vertically up and down within the guide groove 9, the guide block 606 can effectively drive the dustproof net 605 in the middle of the fixing frame 604 on one side of the rack plate 603 to move synchronously up and down. This makes the dust attachment points on the net surface more dispersed, preventing it from concentrating in one place to form a thick layer. At the same time, the airflow can act more comprehensively on the dustproof net 605, blowing away some of the already attached dust. Furthermore, the moving dustproof net 605 can reduce the accumulation of static electricity to a certain extent, reducing the adsorption effect of static electricity on dust, thereby reducing dust accumulation.

[0026] The vibration mechanism 6 also includes a drive gear 601, a linkage gear 602, a fan 607, a transmission belt 608, a rotating shaft 609, an L-shaped fixing plate 610, and a mounting plate 611. The L-shaped fixing plate 610 is fixedly connected to one side of the outer wall of the air outlet chamber 4; The rotating shaft 609 rotates through the middle section of the corner of the L-shaped fixed plate 610; The drive tooth 601 is threaded to one end of the rotating shaft 609, and the drive tooth 601 has only one pair of teeth that are symmetrical to each other on its circumference. Linkage gear 602 is rotatably connected to the side of L-shaped fixed plate 610 near the drive gear 601, and the circumference of linkage gear 602 has a half circle of teeth. The drive tooth 601, the linkage tooth 602 and the rack plate 603 mesh with each other; The mounting plate 611 is fixedly connected to the inner wall of the air outlet 7 near the back of the dustproof net 605 by bolts, and a guide shaft is rotatably connected to one end of the mounting plate 611. The fan 607 is threadedly connected to the circumference of the end of the guide shaft, and a transmission wheel is fixedly installed on the rotating shaft 609 and the outer circumference of the guide shaft, respectively. The two ends of the transmission belt 608 are respectively sleeved on the circumference of the two transmission wheels, and the two transmission wheels and the transmission belt 608 form a transmission engagement. The fan 607 is located at the center of the air outlet 7, and the transmission belt 608 passes through the guide hole 10. When the centrifugal fan is working, the air entering the centrifugal fan is discharged through the air outlet 7. During this process, the air entering the air outlet 7 drives the fan 607 to rotate. The rotating fan 607 drives the transmission wheel on the circumference of the guide shaft to rotate, which in turn drives the rotating shaft 609 at one end of the transmission belt 608 to rotate synchronously. The drive tooth 601 at the end of the rotating shaft 609 also rotates synchronously. The drive tooth 601 meshes with the rack plate 603. When the drive tooth 601 rotates, it drives the rack plate 603 to move downward. The guide block 606 on one side of the rack plate 603 slides downward in the guide groove 9, so that the dust screen 605 moves downward synchronously. When another tooth of the drive gear 601 engages with the linkage gear 602, it causes the linkage gear 602 to reverse. At this time, the linkage gear 602 drives the rack plate 603 to move upward, and the guide block 606 on one side of the rack plate 603 slides upward within the guide groove 9, causing the dustproof net 605 to move upward synchronously. This process is repeated to complete the high and low movement of the dustproof net 605 within the groove 8, solving the problem that dust on the surface of the traditional fixed dustproof net 605 tends to gradually accumulate in specific areas of the mesh due to airflow disturbance and gravity. At the same time, it plays a role in... To ensure unobstructed airflow, the dust filter 605 experiences less resistance as air passes through it, allowing for smoother exhaust from the outlet 7. This effectively improves the ventilation efficiency of the centrifugal fan. Furthermore, the cleanliness of the dust filter 605 and outlet 7 reduces ventilation resistance, lowering the load on the fan motor, reducing heat generation and wear, and extending its lifespan. The vibration mechanism 6 also embodies the concept of energy conservation and environmental protection, using the exhaust behavior of the centrifugal fan to move the dust filter 605.

[0027] Example 2: An operation method for an energy-saving centrifugal fan dust collection device, such as... Figure 7 As shown, the specific steps include: S1: When the centrifugal fan is working, the air flows through the inside of the centrifugal fan and then into the air outlet 7; S2: The air flowing into the air outlet 7 drives the fan 607 to rotate. The rotating fan 607 drives the transmission wheel on the circumference of the guide shaft to rotate, which in turn drives the rotating shaft 609 at one end of the transmission belt 608 to rotate synchronously. S3: The drive tooth 601 at the end of the rotating shaft 609 also rotates synchronously, and the drive tooth 601 meshes with the rack plate 603. When the drive tooth 601 rotates, it drives the rack plate 603 to move downward. The guide block 606 on one side of the rack plate 603 slides downward in the guide groove 9, so that the dustproof net 605 moves downward synchronously. S4: When another tooth of the drive tooth 601 engages with the linkage tooth 602, it causes the linkage tooth 602 to reverse. At this time, the linkage tooth 602 causes the rack plate 603 to move upward, and the guide block 606 on one side of the rack plate 603 slides upward within the guide groove 9, so that the dustproof net 605 moves upward synchronously. S5: This cycle repeats continuously, completing the high and low movement of the dustproof net 605 within the groove 8.

[0028] A speed sensor is fitted onto the outer surface of the guide shaft on the inner circumference of the fan 607. The speed sensor is a Honeywell HMC5883L. A pressure sensor is fixedly installed on the top inner wall of the guide groove 9. The pressure sensor is a MS5803-14BA.

[0029] Based on the measurement of the rotational speed of fan 607 and the vertical reciprocating number of dust screen 605, the safety threshold that can ensure both low motor load of centrifugal fan and easy dust adhesion on the surface of dust screen 60 is explored. Set the fan 607's rotation speed to (r / min), the vertical reciprocating motion of the dust filter 605 is n (times / min). Assuming that the transmission ratio of each component is fixed during the transmission process, and the dust filter 605 completes one vertical reciprocating motion for every k revolutions of the fan 607, then the relationship between them can be expressed as: Where k is a constant related to the gear ratio, belt ratio, etc. of the transmission system, and is obtained through experiments. The measurement method is as follows: Step 1: Start the centrifugal fan and let it run stably for a period of time. Then start recording the rotational speed of fan 607. Take multiple measurements under different operating conditions (such as different fan power, different ventilation resistance, etc.). Record the rotational speed value within a certain time period for each measurement, and then take the average value to reduce measurement error. Step 2: While measuring the rotational speed of the fan 607, measure the vertical reciprocating number of the dust filter 605. Perform multiple measurements under different working conditions, record the number of reciprocating times within a certain time period for each measurement, and take the average value of the vertical reciprocating number of the dust filter 605. Step 3: Substitute the average rotational speed of fan 607 and the average number of vertical reciprocating strokes of dust filter 605 into the above formula to calculate the value of k.

[0030] The vertical reciprocating motion of the dust filter 605 will have a certain impact on the ventilation of the fan, and thus affect the load on the fan motor. Generally speaking, the more times the dust filter 605 reciprocates, the more frequently the ventilation resistance changes, and the motor load may increase accordingly. However, within a certain range, this increase is acceptable. Let the safe upper limit of the motor load correspond to the number of reciprocating motions of the dust filter. This value can be determined by measuring the power consumption of the motor at different reciprocating cycles.

[0031] The vertical reciprocating motion of the dustproof net 605 can reduce dust adhesion, but too few reciprocations may not effectively prevent dust accumulation; too many reciprocations may lead to unnecessary energy consumption. Let the minimum number of reciprocations of the dustproof net to effectively prevent dust adhesion be... This value can be determined by observing the accumulation of dust on the surface of the dustproof net after different reciprocating cycles.

[0032] Taking both factors into account, the threshold range for the vertical reciprocating number of dustproof nets 605 that ensures both low fan motor load and minimal dust adhesion to the surface of the dustproof net 605 is [value missing]. ; The specific calculations are as follows: 1. Based on the rotational speed of fan 607 Given the transmission constant k, calculate the vertical reciprocating number of the dustproof mesh 605. ; 2. Determine whether the calculated n is within the threshold range. Inside, if ≤n≤ This indicates that the current fan 607 rotation speed and dust filter 605 reciprocating frequency can both ensure low motor load and prevent dust accumulation. If n < Then it is necessary to appropriately increase the rotational speed of fan 607, if n > If so, the rotation speed of fan 607 needs to be reduced.

[0033] Thus, by deriving an algorithmic formula to estimate the vertical reciprocating frequency of the dust filter 605 based on the rotational speed of the fan 607, and determining the relevant threshold range, the algorithm can accurately match the operating parameters of the fan and the dust filter in terms of equipment operating efficiency. Regardless of the fan's power level, the reciprocating frequency of the dust filter can be adjusted in a timely manner according to the formula to avoid energy waste. At the same time, by using the established formula relating motor load and reciprocating frequency, the motor load can be controlled within a reasonable range, reducing energy consumption and heat generation, extending motor lifespan, and improving overall operating efficiency.

[0034] From a stability and reliability perspective, accurately estimating and controlling the number of reciprocating cycles of the dust filter can reduce equipment failures caused by abnormal movement. Whether it's fan overload due to dust accumulation or excessive wear of the transmission system, these issues can be effectively avoided, ensuring stable and reliable operation of the equipment under various working conditions.

[0035] In terms of cost control, a reasonable number of reciprocating cycles can reduce wear on critical components, extend their service life, and decrease replacement frequency and maintenance needs. Furthermore, algorithms can monitor equipment status in real time, predict problems in advance, and develop more reasonable maintenance plans, avoiding resource waste and reducing maintenance costs.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An energy-saving centrifugal fan dust collection device, comprising a casing (2) with an organic cover (1) fixedly mounted on the front, characterized in that, An air outlet chamber (4) is fixedly installed on one side of the chassis (2), and an air outlet (7) communicating with the inside of the chassis (2) is provided in its inner cavity. A side box (3) is fixedly installed on the front of the air outlet chamber (4), and a box cover (5) is connected to one side of its front by a hinge. A shaking mechanism (6) is provided inside the side box (3), and an impeller is rotatably connected to the center of the chassis (2).

2. The energy-saving centrifugal fan dust collection device according to claim 1, characterized in that, The air outlet chamber (4) has a guide hole (10) on one side, and a groove (8) is provided on the side of the air outlet chamber (4) near the guide hole (10), and a guide groove (9) is provided on the inner wall of one side of the groove (8).

3. The energy-saving centrifugal fan dust collection device according to claim 1, characterized in that, The shaking mechanism (6) includes a rack plate (603), a fixing frame (604), a dustproof net (605) and a guide block (606), and the two guide blocks (606) are slidably connected in the guide groove (9); A rack plate (603) is fixedly connected to the outer back wall of two guide blocks (606); Fixture (604), two fixtures (604) are respectively bolted to the top side and the bottom side of the rack plate (603).

4. The energy-saving centrifugal fan dust collection device according to claim 3, characterized in that, The dustproof net (605) is connected to the opposite side of the two fixing frames (604) by screws; The top and bottom of the dustproof net (605) are wider than the inner diameter of the top and bottom of the air outlet (7).

5. The energy-saving centrifugal fan dust collection device according to claim 1, characterized in that, The vibration mechanism (6) also includes a drive gear (601), a linkage gear (602), a fan (607), a transmission belt (608), a rotating shaft (609), an L-shaped fixing plate (610), and a mounting plate (611). L-shaped fixing plate (610) is fixedly connected to the outer wall of one side of the air outlet chamber (4); The pivot (609) rotates through the middle section of the corner of the L-shaped fixed plate (610).

6. The energy-saving centrifugal fan dust collection device according to claim 5, characterized in that, The drive tooth (601) is threaded to one end of the rotating shaft (609), and the circumference of the drive tooth (601) has only a pair of teeth that are symmetrical to each other. The linkage tooth (602) is rotatably connected to the side of the L-shaped fixing plate (610) near the drive tooth (601), and the circumference of the linkage tooth (602) has a half circle of teeth.

7. The energy-saving centrifugal fan dust collection device according to claim 6, characterized in that, The drive tooth (601), the linkage tooth (602), and the rack plate (603) mesh with each other.

8. The energy-saving centrifugal fan dust collection device according to claim 5, characterized in that, The mounting plate (611) is fixedly connected to the inner wall of the air outlet (7) near the back of the dustproof net (605) by bolts, and a guide shaft is rotatably connected to one end of the mounting plate (611).

9. The energy-saving centrifugal fan dust collection device according to claim 5, characterized in that, The fan (607) is threaded to the circumference of the end of the guide shaft, and the rotating shaft (609) and the outer circumference of the guide shaft are respectively fixedly installed with transmission wheels.

10. The energy-saving centrifugal fan dust collection device according to claim 5, characterized in that, The two ends of the transmission belt (608) are respectively sleeved on the circumference of the two transmission wheels, and the two transmission wheels and the transmission belt (608) form a transmission cooperation. The fan (607) is located at the center of the air outlet (7), and the transmission belt (608) passes through the guide hole (10).

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