Industrial energy-saving centrifugal fan

Abstract

The invention relates to the technical field of centrifugal ventilators, in particular to an industrial energy-saving centrifugal ventilator which comprises a base, a volute and a driving shaft, the volute is fixedly connected to the upper surface of the base, an impeller is arranged in the volute, one end of the driving shaft penetrates through the volute to be fixedly connected with the impeller, and the other end of the driving shaft penetrates through the volute to be fixedly connected with the impeller. The base is fixedly connected with a backflow box, the backflow box is arranged on one side of the volute, an arc-shaped groove is formed in the volute, an anti-blocking component is installed on the volute, and the anti-blocking component comprises a circular ring, a scraping plate and a cylindrical block. A series of mechanical actions are triggered through movement of the baffle, finally, the scraping plate and the cutter clean impurities such as plastic bags attached to the baffle, the situation that the impurities block the air inlet is avoided, the normal air inlet amount of the ventilator is guaranteed, and the working efficiency is improved.

Description

An industrial energy-saving centrifugal fan Technical Field

[0001] This invention relates to the field of centrifugal fan technology, and more particularly to an energy-saving centrifugal fan for industrial use. Background Technology

[0002] Centrifugal fans are fluid machines that convert mechanical energy into kinetic and pressure energy of gas to achieve gas transport. Their basic working principle can be traced back to the mid-19th century, utilizing a rotating impeller to do work on the gas. Under centrifugal force, the gas is accelerated and thrown out of the impeller, collected in a volute, and discharged at higher pressure and speed. In an era of low energy costs and weak environmental awareness, industrial fans generally suffered from low efficiency. With the escalating global energy crisis and the introduction of "dual-carbon" targets, energy consumption in the industrial sector has become a focal point. The main problems exposed by traditional centrifugal fans have become a direct driving force for the development of energy-saving technologies.

[0003] According to the publication number "CN219317230U", a high-efficiency dust removal and energy-saving centrifugal fan is proposed. It filters impurities and particles in the air through multi-stage filter screens. The cleaning brush cleans the filter screen to prevent the mesh from clogging and enhance the filtration effect. It has good dust removal effect, long service life and simple operation.

[0004] However, in the aforementioned existing technologies, the filter screen blocks external impurities, but it cannot automatically clean itself while the fan is working. As a result, when working in an industrial plant, the strong suction can attract and stick lightweight objects such as plastic bags to the filter screen. If it is not cleaned in time, it will seriously affect the air intake of the fan, resulting in low fan efficiency and failure to achieve energy-saving effects. Summary of the Invention

[0005] The purpose of this invention is to address the following shortcomings in the prior art: when working in industrial plants, the strong suction can attract and adhere lightweight objects such as plastic bags to the filter screen. If not cleaned in time, this will seriously affect the air intake of the ventilator, resulting in low ventilator efficiency and failure to achieve energy-saving effects. Therefore, this invention proposes an energy-saving centrifugal ventilator for industrial use.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an industrial energy-saving centrifugal fan, the industrial energy-saving centrifugal fan including a base, a volute, and a drive shaft, the volute being fixedly connected to the upper surface of the base, an impeller being provided inside the volute, and one end of the drive shaft passing through the volute and being fixedly connected to the impeller.

[0007] A return box is fixedly connected to the base. The return box is located on one side of the volute. An arc-shaped groove is formed on the volute. An anti-clogging component is installed on the volute. The anti-clogging component includes a ring, a scraper, and a cylindrical block. A circular groove is formed on one side of the volute. A limit block is fixedly connected to one side of the ring. The limit block is arc-shaped and slidably connected in the circular groove. One end of the scraper is fixedly connected to the inner wall of the ring. The cylindrical block is fixedly connected to the other end of the scraper. A baffle is slidably connected to the cylindrical block. A horizontal plate is provided on one side of the baffle. The horizontal plate is slidably connected in the arc-shaped groove. A return spring is provided between the horizontal plate and the inner wall of the arc-shaped groove. A cutter is slidably connected to the scraper.

[0008] Preferably, a rack plate is slidably connected to the upper wall of the reflux box, a buoyancy plate is fixedly connected to the lower end of the rack plate, a protrusion is fixedly connected to the outer wall of the volute, a rotating shaft is rotatably connected to the protrusion, one end of the rotating shaft meshes with the outer surface of the ring through a gear, and the other end of the rotating shaft meshes with the rack plate. The anti-clogging component also includes a sliding plate and a second spring. The sliding plate is T-shaped and slidably connected to the scraper. Two second springs are respectively fixedly connected between the two ends of the sliding plate and the outer surface of the scraper. The sliding plate has a horizontal tooth at the end near the baffle. A protective box is fixedly connected and installed on the reflux box.

[0009] Preferably, a support platform is fixedly connected to the upper surface of the return box. The upper surface of the support platform is arc-shaped. A servo motor is installed at the upper end of the support platform. The input end of the servo motor is fixedly connected to the drive shaft. A square groove is opened on the support platform, and a T-shaped plate is slidably connected in the square groove.

[0010] Preferably, a convex box is fixedly connected to the bottom wall inside the reflux box. The convex box is located on one side of the buoyancy plate. A partition is slidably connected to the convex box. A round hole is opened on the partition. One end of the T-shaped plate passes through the upper wall of the reflux box and is fixedly connected to the upper end of the partition.

[0011] Preferably, a top cover is slidably connected between the two ends of the upper surface of the support platform, and a plurality of heat dissipation pipes are fixedly connected to the inner wall of the top cover. One end of each of the plurality of heat dissipation pipes is connected to a return box. A water collection tank is fixedly connected inside the support platform, and the other end of each of the plurality of heat dissipation pipes is connected to the water collection tank.

[0012] Preferably, a storage bag is installed between the T-shaped plate and the servo motor, the storage bag is connected to the water collection tank, and a first spring is fixedly connected between the T-shaped plate and the upper surface of the return box.

[0013] Preferably, a convex-shaped limiting plate is fixedly connected between the support platform and the volute, a movable plate is slidably connected inside the limiting plate, the limiting plate is provided with a reciprocating screw, and the movable plate is mounted on the reciprocating screw.

[0014] Preferably, two square boxes are fixedly connected to the upper surface of the return box, and a suction tube is fixedly connected to each of the two square boxes. A piston plate is slidably connected inside each of the two square boxes, and a docking block is fixedly connected between the two piston plates. The docking block is hinged to the moving plate. A connecting pipe is fixedly connected to each of the two square boxes, and the end of each connecting pipe away from the square box is connected to the water collection tank.

[0015] Preferably, a mounting frame is fixedly connected between the two sides of the volute, and a limiting groove is opened at both ends of the mounting frame. A support rod is slidably connected between the two limiting grooves. An arc-shaped box is rotatably connected to the support rod. Fan blades are installed in a circular array on the outer surface of the support rod inside the arc-shaped box. A square hole is opened on the mounting frame, and a push plate is slidably connected in the square hole. The upper end of the push plate is fixedly connected to the arc-shaped box. An air supply pipe is provided between the square hole and the arc groove.

[0016] Preferably, both the support rod and the reciprocating screw are equipped with sprockets, and a chain meshes between the two sprockets.

[0017] Compared with the prior art, the beneficial effects of the present invention are: the return box is divided into two chambers by a partition, and the water in the two chambers is no longer in communication. As water in one chamber is continuously sucked into the square box by the suction pipe, it flows to the other chamber through the connecting pipe, storage bag, water collection tank and heat dissipation pipe. At this time, the water flowing through the heat dissipation pipe can cool the servo motor, so as to ensure that the servo motor will not be damaged by high temperature when working in summer or high temperature environment.

[0018] As the scraper moves in a circular motion with the ring, it pushes the impurities attached to one side of the baffle. Since the scraper is slidably connected to a cutter, the cutter slides continuously under its own weight as the scraper rotates. At this time, the cutter can cut the plastic bag on one side of the baffle. The cut plastic bag will enter the volute with the wind and be discharged, achieving the effect of automatic cleaning of impurities, thereby preventing impurities from affecting the normal operation of the ventilator.

[0019] The industrial energy-saving centrifugal fan of the present invention achieves the dual effects of anti-clogging and energy saving through ingenious structural design. In terms of anti-clogging, the movement of the baffle triggers a series of mechanical actions, which ultimately enable the scraper and cutter to clean the plastic bags and other impurities attached to the baffle, thus preventing impurities from clogging the air inlet, ensuring the normal air intake of the fan, and improving work efficiency.

[0020] In terms of energy saving, by converting the wind energy discharged by the ventilator into the rotational energy of the fan blades, which in turn drives the reciprocating screw to rotate, water recycling and water cooling of the servo motor are realized. This energy conversion and utilization method reduces additional energy consumption and achieves the purpose of energy saving. At the same time, the entire device has a compact structure, and the components work together to ensure stable and reliable operation, which has high practicality and promotion value. Attached Figure Description

[0021] Figure 1 is a front view of the energy-saving centrifugal fan for industrial use proposed in this invention; Figure 2 is a view of the rotating shaft structure of the energy-saving centrifugal fan for industrial use proposed in this invention; Figure 3 is a view of the internal structure of the return box of the energy-saving centrifugal fan for industrial use proposed in this invention; Figure 4 is a view of the protective box structure of the energy-saving centrifugal fan for industrial use proposed in this invention; Figure 5 is a view of the docking block structure of the energy-saving centrifugal fan for industrial use proposed in this invention; Figure 6 is a view of the volute structure of the energy-saving centrifugal fan for industrial use proposed in this invention; Figure 7 is a view of the partition structure of the energy-saving centrifugal fan for industrial use proposed in this invention; Figure 8 is a view of the top cover structure of the energy-saving centrifugal fan for industrial use proposed in this invention; Figure 9 is a view of the fan blade structure of the energy-saving centrifugal fan for industrial use proposed in this invention; Figure 10 is a view of the sliding plate structure of the energy-saving centrifugal fan for industrial use proposed in this invention; Figure 11 is a partially enlarged view of section A in Figure 10; Figure 12 is a view of the limiting block structure of the energy-saving centrifugal fan for industrial use proposed in this invention.

[0022] In the diagram: 1. Base, 2. Baffle, 3. Scraper, 4. Ring, 5. Mounting bracket, 6. Volute housing, 7. Limiting plate, 8. Drive shaft, 9. Servo motor, 10. Top cover, 11. Support platform, 12. T-shaped plate, 13. Rack plate, 14. Protrusion, 15. Gear, 16. Rotating shaft, 17. Buoyancy plate, 18. Convex box, 19. Partition, 20. Suction tube, 21. Square box, 22. Moving plate, 23. Chain, 24. Connecting pipe, 25. Piston plate, 26. Connecting block, 27. Arc groove, 28. Storage bag, 29. Heat dissipation pipe, 30. First spring, 31. Push plate, 32. Arc box, 33. Air supply pipe, 34. Support rod, 35. Fan blade, 36. Slide plate, 37. Cylindrical block, 38. Second spring, 39. Water collection tank, 40. Limiting block, 41. Return box, 42. Protective box, 43. Cutter. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] Referring to Figures 1-2, an industrial energy-saving centrifugal fan includes a base 1, a volute 6, and a drive shaft 8. The volute 6 is fixedly connected to the upper surface of the base 1, and an impeller is provided inside the volute 6. One end of the drive shaft 8 passes through the volute 6 and is fixedly connected to the impeller. The base 1, volute 6, drive shaft 8, servo motor 9, and impeller together constitute the centrifugal fan.

[0025] Referring to Figures 2-3, 6, and 10-12, a return box 41 is fixedly connected to the base 1. The return box 41 is located on one side of the volute 6. An arc-shaped groove 27 is formed on the volute 6. An anti-blocking component is installed on the volute 6, which includes a ring 4, a scraper 3, and a cylindrical block 37. A circular groove is formed on one side of the volute 6. A limiting block 40 is fixedly connected to one side of the ring 4. The limiting block 40 is arc-shaped and slidably connected in the circular groove. The ring 4 slides in the circular groove through the limiting block 40, thereby achieving stable rotation of the ring 4. A limiting structure is provided between the limiting block 40 and the circular groove, so that the limiting block 40 cannot detach from the circular groove. One end of the scraper 3 is fixedly connected to the inner wall of the ring 4. A cutter 43 is slidably connected to the scraper 3. The scraper 3 is located on one side of the baffle 2. A cylindrical block 37 is fixedly connected to the other end of the scraper 3. A baffle 2 is slidably connected to the cylindrical block 37. The baffle 2 can slide horizontally on the cylindrical block 37. A horizontal plate is provided on one side of the baffle 2. The horizontal plate is slidably connected in the arc groove 27. The outer surface of the horizontal plate is slidably connected to the inner wall of the arc groove 27. A sealing gasket can be provided at the end of the horizontal plate, so that the horizontal plate can squeeze the gas in the arc groove 27 when it moves. A return spring is provided between the horizontal plate and the inner wall of the arc groove 27. The return spring is used to push the horizontal plate and the baffle 2 to return to their original positions. In actual use, the ring 4, scraper 3 and baffle 2 can all be made of lightweight materials.

[0026] Referring to Figures 3, 4, and 10, a rack plate 13 is slidably connected to the upper wall of the return tank 41. A buoyancy plate 17 is fixedly connected to the lower end of the rack plate 13. The buoyancy plate 17 moves up and down with the rise and fall of the water level. The movement of the buoyancy plate 17 serves as the driving force, thereby driving the rotating shaft 16 to rotate. The rack plate 13 has the weight of movement, which allows it to descend with the water level. The rack plate 13 and the buoyancy plate 17 can also drive the rotating shaft 16 to rotate under their own weight. A protrusion 14 is fixedly connected to the outer wall of the volute 6. The rotating shaft 16 is rotatably connected to the protrusion 14. One end of the rotating shaft 16 meshes with the outer surface of the ring 4 through a gear 15, and the other end of the rotating shaft 16 meshes with the rack plate 13. The outer wall of the ring 4 has teeth, and the gear 15 drives the ring 4 to rotate. The anti-blocking components also include a slide plate 36 and a second spring 38. The slide plate 36 is T-shaped and slidably connected to the scraper 3. The two second springs 38 are fixedly connected between the two ends of the slide plate 36 and the outer surface of the scraper 3. The slide plate 36 has a horizontal tooth at the end near the baffle 2. The second spring 38 can push the slide plate 36 to contact the outer surface of the baffle 2. The horizontal tooth can be a blade, which can be used to crush impurities with the horizontal tooth and the cutter 43. When the slide plate 36 moves, it can crush the plastic bag attached to one side of the baffle 2. A protective box 42 is fixedly connected to the return box 41. The protective box 42 is used to protect the internal components from interference from external impurities. The protective box 42 is detachable, which facilitates the maintenance and replacement of the internal structure.

[0027] Referring to Figures 2, 3, and 7, a support platform 11 is fixedly connected to the upper surface of the return tank 41. The upper surface of the support platform 11 is arc-shaped to facilitate the installation of the servo motor 9. The servo motor 9 is installed on the upper end of the support platform 11, and the input end of the servo motor 9 is fixedly connected to the drive shaft 8. A square groove is opened on the support platform 11, and a T-shaped plate 12 is slidably connected in the square groove. A convex box 18 is fixedly connected to the bottom wall inside the return tank 41. The convex box 18 is located on one side of the buoyancy plate 17, and a partition 19 is slidably connected to the convex box 18. A round hole is opened on the partition 19, and the water in the two chambers can achieve the same water level through the round hole. One end of the T-shaped plate 12 passes through the upper wall of the return tank 41 and is fixedly connected to the upper end of the partition 19. The convex box 18 and the partition 19 can block the water in the two chambers. The upper end of the partition 19 does not contact the upper wall of the return tank 41. Therefore, when the water level in one chamber is higher than that in the partition 19, it can flow to the other chamber with a lower water level.

[0028] Referring to Figures 3, 7, and 8, a top cover 10 is slidably connected between the two ends of the upper surface of the support platform 11. Multiple heat dissipation pipes 29 are fixedly connected to the inner wall of the top cover 10. The multiple heat dissipation pipes 29 are arranged in an equidistant array. One end of each of the multiple heat dissipation pipes 29 is connected to the return box 41. Water passing through the heat dissipation pipes 29 will flow directly into the cavity with the buoyancy plate 17. A water collection box 39 is fixedly connected inside the support platform 11. The other end of each of the multiple heat dissipation pipes 29 is connected to the water collection box 39. A storage bag 28 is installed between the T-shaped plate 12 and the servo motor 9. The storage bag 28 is made of a stretchable material. The storage bag 28 is connected to the water collection box 39. The water in the storage bag 28 cannot flow quickly into the water collection box 39. Therefore, the storage bag 28 will first expand and then continuously send water out. A first spring 30 is fixedly connected between the T-shaped plate 12 and the upper surface of the return box 41.

[0029] Referring to Figures 3 and 5, a convex-shaped limiting plate 7 is fixedly connected between the support platform 11 and the volute 6. A movable plate 22 is slidably connected inside the limiting plate 7. The limiting plate 7 is equipped with a reciprocating screw, which is located inside the limiting plate 7 and is rotatably connected to the limiting plate 7. The movable plate 22 is mounted on the reciprocating screw. The connection principle between the movable plate 22 and the reciprocating screw is the same as the matching connection principle between the reciprocating screw and the nut in the prior art. Two square boxes 21 are fixedly connected to the upper surface of the return box 41. A suction tube 20 is fixedly connected to each of the two square boxes 21. A piston plate 25 is slidably connected inside each of the two square boxes 21. A docking block 26 is fixedly connected between the two piston plates 25. The piston plate 25 moves synchronously, the docking block 26 is hinged to the moving plate 22, and the two square boxes 21 are fixedly connected with connecting pipes 24. The ends of the two connecting pipes 24 away from the square boxes 21 are connected to the water collection tank 39. The connecting pipes 24 and suction pipes 20 on the two square boxes 21 are the same, and the one-way valves on the two sets of structures also work in the same way. When the piston plate 25 moves, one square box 21 will suck water and the other square box 21 will discharge water. This allows the water in the return box 41 to be continuously input into the storage bag 28. When the water flows through the heat dissipation pipe 29, since the heat dissipation pipe 29 is located on the outer surface of the servo motor 9, it can achieve the effect of water cooling of the servo motor 9.

[0030] Referring to Figures 3 and 9, a mounting bracket 5 is fixedly connected between the two sides of the volute 6. Limiting grooves are opened at both ends of the mounting bracket 5, and a support rod 34 is slidably connected between the two limiting grooves. An arc-shaped box 32 is rotatably connected to the support rod 34. Fan blades 35 are installed in a ring array on the outer surface of the support rod 34 inside the arc-shaped box 32. A square hole is opened on the mounting bracket 5, and a push plate 31 is slidably connected in the square hole. The upper end of the push plate 31 is fixedly connected to the arc-shaped plate 32. An air supply pipe 33 is provided between the square hole and the arc groove 27. The installation method between the air supply pipe 33 and the square hole is the common plug-in connection in the prior art. When the temperature is low and it is not necessary to cool the servo motor 9, the air supply pipe 33 is disconnected from the square hole. At this time, the heat dissipation structure will not work. Both the support rod 34 and the reciprocating screw are equipped with sprockets. A chain 23 meshes between the two sprockets. When one sprocket rotates with the support rod 34, it will drive the other sprocket to rotate synchronously through the chain 23, and the reciprocating screw will rotate with the sprocket.

[0031] In this invention, the servo motor 9 first drives the rotating shaft 16 to rotate continuously through the output end. The rotating shaft 16 drives the impeller inside the volute 6 to rotate at high speed. Under the action of centrifugal force, the gas is accelerated and thrown out of the impeller. After being collected by the volute 6, it is discharged with high pressure and speed.

[0032] During operation, this device continuously adsorbs external gases. Baffle 2 is located inside the air inlet of the ventilator. The strong suction force causes baffle 2 to slide on the cylindrical block 37. Since baffle 2 slides within the arc-shaped groove 27 via the horizontal plate, its movement compresses the return spring. Simultaneously, the horizontal plate, while compressing the return spring, forces the gas within the arc-shaped groove 27 to be fed through the air supply pipe 33 into the square hole on the mounting bracket 5. As the gas volume in the square hole increases, it pushes the push plate 31 upwards. The upward movement of the push plate 31 pushes the arc-shaped box 32 upwards. Because the bottom wall of the volute 6 exhaust port has an opening... With a through hole provided, when the arc-shaped box 32 moves up to contact the outer surface of the volute 6 exhaust port, some fan blades will move into the volute 6 through the through hole. Since the air discharged from the volute 6 has a large driving force, it can drive the fan blades 35 to move. Multiple fan blades 35 are mounted in a ring array on the support rod 34. The support rod 34 is connected to the reciprocating screw through a sprocket and a chain 23. Therefore, the movement of the fan blades 35 will drive the support rod 34 to rotate. The support rod 34 can drive the reciprocating screw to rotate under the action of the sprocket and the chain 23. When the reciprocating screw rotates, it can drive the moving plate 22 to move horizontally back and forth within the limiting plate 7.

[0033] When the docking block 26 moves horizontally back and forth with the moving plate 22, it drives the two piston plates 25 to slide in the square box 21 respectively. Since both the connecting pipe 24 and the suction pipe 20 are equipped with one-way valves, when the piston plate 25 slides in the square box 21, a negative pressure is formed in the square box 21. At this time, the one-way valve on the suction pipe 20 opens, and the water in the return box 19 is sucked into the square box 21 through the suction pipe 20. When the piston plate 25 returns to its original position and slides in the square box 21, the water pressure in the square box 21 increases, the one-way valve on the connecting pipe 24 opens, and the water in the square box 21 is forced into the storage bag 28 through the connecting pipe 24. Since the docking block 26 is located between the two piston plates 25, the two piston plates 25 alternately squeeze the water in the square box 21, so that the two connecting pipes 24 alternately and quickly input the water in the return box 41 into the storage bag 28. At this time, the water in the storage bag 28 flows in with the water. The water entering the storage bag 28 will expand. After the storage bag 28 expands, its upper surface will contact the outer surface of the servo motor 9 to generate heat. The lower end will push the T-shaped plate 12 down and compress the first spring 30. At the same time, the partition 19 will move down with the T-shaped plate 12 until the lower end of the T-shaped plate 12 contacts the bottom wall of the inner wall of the convex box 18. At this time, the T-shaped plate 12 will stop moving down. The round hole will move into the convex plate 18 with the partition 19, thereby dividing the return box 41 into two chambers by the partition 19. At this time, the water in the two chambers will no longer be connected. As the water in one chamber is continuously sucked into the square box 21 by the suction pipe 20, it will flow to the other chamber through the connecting pipe 24, the storage bag 28, the water collection tank 39, and the heat dissipation pipe 29. At this time, the water flowing through the heat dissipation pipe 29 can cool the servo motor 9 to ensure that the servo motor 9 will not be damaged by high temperature when working in summer or high temperature environment.

[0034] As the device continues to operate, the water level in the chamber containing the suction tube 20 decreases, while the water level in the chamber containing the buoyancy plate 17 increases. At this point, the buoyancy plate 17 and the rack plate 13 rise with the water level until the water level is equal to that of the partition plate 19. The water then flows into the chamber containing the suction tube 20 and is sucked away again, forming a water recycling system. Simultaneously, the upward movement of the rack plate 13 drives the rotating shaft 16 to rotate. The gear 15, as the shaft 16 rotates, drives the meshing ring 4 to rotate. The scraper 3 also rotates in a circular motion along with the ring 4. This circular motion causes the sliding plate 36 to move along with it. Since the sliding plate 36 and the scraper 3 are connected by a second spring 38, and the end of the sliding plate 36 near the baffle 2 has horizontal teeth, this… This design ensures that the slide plate 36 maintains close contact with the outer surface of the baffle 2 during movement. The transverse teeth act like blades, breaking up impurities such as plastic bags attached to one side of the baffle 2 as the slide plate 36 moves. This effectively prevents these impurities from clogging the air inlet of the ventilator, ensuring its normal operation. At the same time, the rotation of the ring 4 also drives the rotation of the cylindrical block 37. Under the action of the return spring, the baffle 2 on the cylindrical block 37 slides horizontally back and forth on the cylindrical block 37. This design further enhances the anti-clogging effect, allowing the ventilator to effectively remove larger impurities or particles when it adsorbs external gases, thanks to the sliding of the baffle 2 and the breaking action of the slide plate 36. This prevents the ventilator from becoming clogged or damaged.

[0035] When this device is working, it will generate suction on the plastic bag. When the plastic bag is blocked by the baffle 2, it will stick to the outer surface of the baffle 2. At this time, the plastic bag will significantly obstruct the air intake of the fan. As the impeller rotates, the air intake decreases, and the gas discharged from the volute 6 also decreases, correspondingly reducing the suction on the baffle 2. The baffle 2 can move to a certain extent under the push of the return spring. As the horizontal plate moves to its reset position within the arc-shaped groove 27, it no longer compresses the gas within the arc-shaped groove 27. At this time, the gas in the square hole on the mounting bracket 5 flows back into the arc-shaped groove 27 through the air supply pipe 33. At this time, the arc-shaped box 32 moves up and down on the mounting bracket 5, causing the fan blade 35 to detach from the volute 6. At this time, the air discharged from the volute 6 no longer has a driving force on the fan blade. The fan blade 35 stops rotating, and the heat dissipation structure also stops working. Since water no longer continuously enters the storage bag 28, the storage bag 28 returns to its original state and no longer presses against the T-shaped plate 12. The T-shaped plate 12 and the partition plate 19 move upward under the force of the first spring 30. At this time, the through hole on the partition plate 19 moves away from the convex box 18, and the water in the chamber where the buoyancy plate 17 is located flows to another chamber through the round hole. At this time, the buoyancy plate 17 moves downward as the water level drops. At this time, the rack plate 13 moves downward, which can drive the rotating shaft 16 to rotate in the opposite direction. The rotating shaft 16 can drive the ring 4 to rotate in the opposite direction through the gear 15. When the scraper 3 moves in a circular motion with the ring 4, it can push the impurities attached to one side of the baffle plate 2. Since the scraper 3 is slidably connected to the cutter 43, the water in the chamber will flow to another chamber through the round hole. As the scraper 3 rotates continuously, the cutter 43 slides along with its own weight, cutting the plastic bag on one side of the baffle 2. The cut plastic bag enters the volute 6 with the airflow and is then discharged. When the fan resumes suction, it pulls the baffle 2 again, causing the gas in the arc groove 27 to be squeezed by the horizontal plate and enter the limiting hole, pushing the arc box 32 upward until the fan blades 35 move into the volute 6, allowing the heat dissipation structure to work again. When the fan is working in a low-temperature environment, if cooling the servo motor 9 is not required, the heat dissipation structure can be stopped by disconnecting the air supply pipe 33 from the square hole. This design allows the fan to operate according to actual conditions. To meet the demands of different working environments, the system flexibly adjusts its operating status, ensuring normal operation of the fan while saving energy and improving work efficiency. Furthermore, all components are made of wear-resistant and corrosion-resistant materials, ensuring stable operation even in harsh working environments. The fan's compact structure and tight connections between components effectively reduce the possibility of gas leakage and improve overall performance. In terms of maintenance, the detachable protective housing 42 allows for easy inspection and replacement of internal components, significantly reducing maintenance costs and time. Moreover, the clever use of water circulation and heat dissipation pipes effectively cools the servo motor with water.This design avoids equipment damage caused by high temperatures and extends the service life of the ventilator. In summary, this industrial energy-saving centrifugal ventilator, with its unique structural design, efficient anti-clogging function, flexible operating status adjustment, good durability, and ease of maintenance, has broad application prospects and promotional value in industrial production.

[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 for industrial use, characterized in that, The industrial energy-saving centrifugal fan includes a base (1), a volute (6), and a drive shaft (8). The volute (6) is fixedly connected to the upper surface of the base (1). An impeller is provided inside the volute (6). One end of the drive shaft (8) passes through the volute (6) and is fixedly connected to the impeller. A return box (41) is fixedly connected to the base (1). The return box (41) is located on one side of the volute (6). An arc-shaped groove (27) is provided on the volute (6). Anti-clogging components are installed on the volute (6). The anti-clogging components include a ring (4), a scraper (3), and a cylindrical block (37). A circular groove is provided on one side of the ring (4). A limiting block (40) is fixedly connected to one side of the ring (4). The limiting block (40) is arc-shaped and slidably connected in the circular groove. One end of the scraper (3) is fixedly connected to the inner wall of the ring (4). The cylindrical block (37) is fixedly connected to the other end of the scraper (3). A baffle (2) is slidably connected on the cylindrical block (37). A horizontal plate is provided on one side of the baffle (2). The horizontal plate is slidably connected in the arc groove (27). A reset spring is provided between the horizontal plate and the inner wall of the arc groove (27). A cutter (43) is slidably connected on the scraper (3).

2. The industrial energy-saving centrifugal fan according to claim 1, characterized in that, The upper wall of the return box (41) is slidably connected to a rack plate (13), and the lower end of the rack plate (13) is fixedly connected to a buoyancy plate (17). The outer wall of the volute (6) is fixedly connected to a protrusion (14), and a rotating shaft (16) is rotatably connected to the protrusion (14). One end of the rotating shaft (16) meshes with the outer surface of the ring (4) through a gear (15), and the other end of the rotating shaft (16) meshes with the rack plate (13). The anti-blocking component also includes a sliding plate (36) and a second spring (38). The sliding plate (36) is T-shaped and slidably connected to the scraper (3). The two second springs (38) are respectively fixedly connected between the two ends of the sliding plate (36) and the outer surface of the scraper (3). The sliding plate (36) has a horizontal tooth at the end near the baffle (2). A protective box (42) is fixedly connected to the return box (41).

3. An industrial energy-saving centrifugal fan according to claim 2, characterized in that, The upper surface of the return box (41) is fixedly connected to a support platform (11). The upper surface of the support platform (11) is arc-shaped. A servo motor (9) is installed on the upper end of the support platform (11). The input end of the servo motor (9) is fixedly connected to the drive shaft (8). A square groove is opened on the support platform (11). A T-shaped plate (12) is slidably connected in the square groove.

4. An industrial energy-saving centrifugal fan according to claim 3, characterized in that, A convex box (18) is fixedly connected to the bottom wall inside the return box (41). The convex box (18) is located on one side of the buoyancy plate (17). A partition (19) is slidably connected to the convex box (18). A round hole is opened on the partition (19). One end of the T-shaped plate (12) passes through the upper wall of the return box (41) and is fixedly connected to the upper end of the partition (19).

5. An industrial energy-saving centrifugal fan according to claim 3, characterized in that, A cover (10) is slidably connected between the two ends of the upper surface of the support platform (11). Multiple heat dissipation pipes (29) are fixedly connected to the inner wall of the cover (10). One end of each of the multiple heat dissipation pipes (29) is connected to the return box (41). A water collection box (39) is fixedly connected inside the support platform (11). The other end of each of the multiple heat dissipation pipes (29) is connected to the water collection box (39).

6. An industrial energy-saving centrifugal fan according to claim 5, characterized in that, A storage bag (28) is installed between the T-shaped plate (12) and the servo motor (9). The storage bag (28) is connected to the water collection tank (39). A first spring (30) is fixedly connected between the T-shaped plate (12) and the upper surface of the return box (41).

7. An industrial energy-saving centrifugal fan according to claim 5, characterized in that, A convex-shaped limiting plate (7) is fixedly connected between the support platform (11) and the volute (6). A movable plate (22) is slidably connected inside the limiting plate (7). The limiting plate (7) is provided with a reciprocating screw, and the movable plate (22) is mounted on the reciprocating screw.

8. An industrial energy-saving centrifugal fan according to claim 7, characterized in that, Two square boxes (21) are fixedly connected to the upper surface of the return box (41). A suction tube (20) is fixedly connected to each of the two square boxes (21). A piston plate (25) is slidably connected inside each of the two square boxes (21). A docking block (26) is fixedly connected between the two piston plates (25). The docking block (26) is hinged to the moving plate (22). A connecting pipe (24) is fixedly connected to each of the two square boxes (21). The end of each connecting pipe (24) away from the square box (21) is connected to the water collection tank (39).

9. An industrial energy-saving centrifugal fan according to claim 7, characterized in that, A mounting bracket (5) is fixedly connected between the two sides of the volute (6). The mounting bracket (5) has a limit groove at both ends. A support rod (34) is slidably connected between the two limit grooves. An arc-shaped box (32) is rotatably connected to the support rod (34). Fan blades (35) are installed in a ring array on the outer surface of the support rod (34) inside the arc-shaped box (32). A square hole is opened on the mounting bracket (5). A push plate (31) is slidably connected inside the square hole. The upper end of the push plate (31) is fixedly connected to the arc-shaped box (32). An air supply pipe (33) is provided between the square hole and the arc-shaped groove (27).

10. An industrial energy-saving centrifugal fan according to claim 9, characterized in that, Both the support rod (34) and the reciprocating screw are equipped with sprockets, and a chain (23) meshes between the two sprockets.

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