Axial flow fan with internal anti-corrosion function

Abstract

The invention discloses an axial flow fan with an internal anti-corrosion function, and relates to the technical field of axial flow fans, the axial flow fan comprises a mounting frame, a shell, a cleaning unit, a spraying unit and a liquid supplementing unit, the mounting frame is used for mounting and fixing the shell, the shell is used for mounting and fixing the cleaning unit, the spraying unit and the liquid supplementing unit, and the cleaning unit is used for self-cleaning of blades. The spraying unit is used for preventing corrosion in the axial flow fan, the liquid supplementing unit is used for supplementing liquid in the spraying unit, in the working process of the axial flow fan, blades of the axial flow fan are cleaned through the cleaning unit, adsorption of dust and impurities is avoided, power output of the axial flow fan is increased, and therefore the energy-saving effect of the axial flow fan is achieved; corrosion inhibition liquid is sprayed into the axial flow fan through the spraying unit for corrosion prevention, corrosion of internal components of the machine caused by corrosion of the internal structure is avoided, and the liquid supplementing unit is used for supplementing the corrosion inhibition liquid in the spraying unit.

Description

Technical Field

[0001] The present invention relates to the technical field of axial fans, and specifically to an axial fan with an internal anti-corrosion function. Background Art

[0002] Axial fans are widely used in many fields, such as industrial ventilation, air conditioning systems, chemical production, etc. However, in many actual working environments, axial fans face serious internal corrosion problems. Due to the long-term contact of the inside of the fan with humid air, corrosive gases or fluid media containing chemical substances, components such as its blades, casing, and hub are prone to corrosion. This not only reduces the mechanical performance and efficiency of the fan, shortens its service life, but may also cause the fan to malfunction during operation, affecting the normal operation of the entire system.

[0003] Currently, common internal anti-corrosion measures for axial fans mainly include manufacturing fan components using corrosion-resistant materials, such as stainless steel, aluminum alloy, etc., and coating anti-corrosion coatings on the surface of components, such as epoxy coatings, polyurethane coatings, etc. However, these methods have certain limitations. In the prior art, anti-corrosion operations cannot be carried out during the operation of the fan. Therefore, in the process of use, when the internal corrosion situation is serious, it is necessary to stop the machine for maintenance, which delays the work of the axial fan, and there may also be a situation where the internal corrosion is not found to be serious, resulting in problems inside the fan and causing damage to the instrument.

[0004] At the same time, the self-cleaning problem of the blades of axial fans cannot be ignored. During long-term operation, the blades will continuously adsorb pollutants such as dust and impurities in the air. The accumulation of these pollutants will change the aerodynamic performance of the blades, increase the operating resistance of the fan, reduce the air volume and air pressure of the fan, and thus affect the overall working efficiency of the fan. To keep the blades clean, currently common methods include regular manual cleaning and installing automatic cleaning devices. Manual cleaning not only consumes a large amount of manpower and time, but also requires the machine to be stopped during the cleaning process, affecting the continuity of production. Although the automatic cleaning device can achieve automatic cleaning of the blades to a certain extent, most of the existing devices have complex structures, high costs, and the cleaning effect is affected by various factors, such as the spraying angle and pressure of the cleaning liquid, and it is difficult to ensure the comprehensive cleaning of the blades. Summary of the Invention

[0005] The purpose of the present invention is to provide an axial fan with an internal anti-corrosion function to solve the problems raised in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions: An axial flow fan with an internal anti-corrosion function, comprising a mounting frame, a housing, a cleaning unit, a spraying unit and a liquid replenishing unit. The mounting frame is placed on a horizontal foundation, the housing is fixedly installed on the mounting frame, the cleaning unit is fixedly installed inside the housing, the spraying unit is fixedly installed inside the housing, the spraying unit is slidably connected to the cleaning unit, the spraying unit has the function of preventing corrosion of the cleaning unit, and the liquid replenishing unit is fixedly installed inside the housing.

[0007] The mounting frame is used to install and fix the housing, the housing is used to install and fix the cleaning unit, the spraying unit and the liquid replenishing unit, the cleaning unit is used for self-cleaning of the blades, the spraying unit is used for internal anti-corrosion of the axial flow fan, and the liquid replenishing unit is used to supplement the liquid inside the spraying unit. During the operation of the axial flow fan, the blades of the axial flow fan are cleaned by the cleaning unit to avoid the adsorption of dust and impurities and increase the power output of the axial flow fan. The inside of the axial flow fan is sprayed with a corrosion inhibitor by the spraying unit for anti-corrosion to avoid the corrosion of the internal structure and the damage of the internal components of the machine. The liquid replenishing unit is used to supplement the corrosion inhibitor in the spraying unit.

[0008] Further, the cleaning unit includes a double-shaft motor, a rotating cylinder, an impeller, a mounting rod, a cleaning block, a return spring, a moving groove and a pulling rope. The fixed end of the double-shaft motor is fixedly installed inside the housing through the mounting rod. One end of the output end of the double-shaft motor is fixedly connected to one end of the rotating cylinder, and the other end is fixedly connected to a straight cylinder. The impeller is fixedly connected to the other end of the rotating cylinder. Moving grooves are arranged on both sides of the blades of the impeller, and the moving grooves are attached to the curved surface of the impeller blades. The cleaning block is slidably installed in the moving groove. An arc-shaped sponge is arranged on the side of the cleaning block close to the impeller blades. One end of the return spring is fixedly connected to the cleaning block, and the other end is fixedly connected to the inner wall of the moving groove. One end of the pulling rope passes through the inside of the impeller and is fixedly connected to the cleaning block, and the other end is fixedly connected to a magnetic disk. The pulling rope is installed inside the rotating cylinder.

[0009] Further, the cleaning unit further includes a straight cylinder, a ring plate, a sliding cylinder, a magnetic rod, a connecting rod, a straight rod and a magnetic disk. The pulling rope is installed inside the straight cylinder. The ring plate is fixedly installed at the end of the straight cylinder away from the double-shaft motor. The sliding cylinder is slidably installed on the magnetic rod. The sliding cylinder is slidably installed on the ring plate through a round rod. One end of the connecting rod is fixedly connected to the magnetic rod, and the other end is rotatably connected to the straight rod. The straight rod is fixedly installed inside the housing parallel to the vertical axis. The magnetic disk is slidably installed inside the straight cylinder. The magnetic disk and the magnetic rod have opposite magnetic polarities. The straight cylinder is slidably connected to the spraying unit.

[0010] The external controller controls the start of the dual-axis motor. Thus, on the one hand, driven by the rotating cylinder, the impeller rotates, sucking gas into the interior of the axial flow fan housing. On the other hand, driven by the straight cylinder, the ring plate rotates. As the ring plate rotates, the sliding cylinder moves up and down on the magnetic rod, causing the magnetic rod to swing left and right. During the left and right swing of the magnetic rod, the arc-shaped push rod is pushed to move under the driving action of the connecting rod. When the distance between the magnetic rod and the ring plate is the closest, under the action of opposite-sex attraction, while the magnetic rod attracts the disk to move to the right, the cleaning block is pulled to move under the action of the pull rope, scraping the dust and impurities on the surface of the impeller. At this time, the return spring is stretched. When the magnetic rod rotates to a position where the distance from the ring plate is getting farther and farther, under the action of the self-restoring force of the return spring, the cleaning block is pulled back to its original position, thus scraping the impurities on the impeller blades again, improving the self-cleaning ability of the impeller, avoiding the accumulation of pollutants such as dust and impurities in the air on the blades, increasing the resistance of the axial flow fan, reducing the air volume and air pressure of the axial flow fan, and resulting in a decrease in the working efficiency of the axial flow fan.

[0011] Further, the spraying unit includes a plugging plate, a telescopic plate, an elastic rope, a sliding ring, a spraying tank, a fan, and a quartz block. The plugging plate is slidably installed in the straight cylinder. One end of the plugging plate close to the dual-axis motor is connected to the inner wall of the straight cylinder through a buffer spring. The fixed end of the telescopic plate is fixedly installed on the outer surface of the straight cylinder. The fixed end of the telescopic plate is in communication connection with the straight cylinder. The telescopic end of the telescopic plate is in communication connection with the spraying tank. One end of the elastic rope is fixedly connected to the sliding ring, and the other end is fixedly connected to the spraying tank. The sliding ring is slidably installed on the outer surface of the straight cylinder. The fan is fixedly installed on the surface of the spraying tank close to the straight cylinder. The quartz block is fixedly installed on the inner wall of the housing.

[0012] When the dual-axis motor drives the straight cylinder to rotate, under the action of centrifugal force, while the spraying tank stretches the telescopic plate to elongate, it also rotates. At this time, the spraying tank pulls the elastic rope, causing the elastic rope to pull the sliding ring to move to the left. Thus, under the action of like-sex repulsion, the plugging plate is pushed to move to the left, opening the communication between the telescopic plate and the straight cylinder blocked by the plugging plate. When the spraying tank rotates inside the housing, the spraying tank hits the quartz block, and the instantaneous current signal generated by the quartz block is fed back to the controller. The controller controls the fan to start. Thus, the fan blows the corrosion inhibitor solution sprayed from the spraying tank onto the surfaces of the impeller and internal parts for anti-corrosion operation, avoiding corrosion at the impeller and affecting the normal operation of the axial flow fan. When the rotation speed of the dual-axis motor is greater, the more air flow passes through the axial flow fan per unit time, resulting in an accelerated corrosion rate of the internal components. At this time, the greater the centrifugal force generated by the dual-axis motor, the greater the distance that the spraying tank pulls the sliding ring to move to the left under the action of the elastic rope, thus increasing the distance that the plugging plate is pushed to move to the left, reducing the communication area between the plugging plate and the telescopic plate, and increasing the spraying amount of the corrosion inhibitor solution to adapt to the anti-corrosion action under different working conditions.

[0013] Further, the liquid replenishing unit includes an arc-shaped push rod, a pressing plate, a liquid storage tank and a connecting pipe. One end of the arc-shaped push rod is fixedly connected to the pressing plate, and the other end abuts against the connecting rod. The pressing plate is slidably connected to the liquid storage tank. The liquid storage tank is fixedly installed on the inner wall of the housing. One end of the connecting pipe is conductively connected to the liquid storage tank, and the other end penetrates through the disk and extends into the straight cylinder.

[0014] During the left and right swinging process of the connecting rod, the arc-shaped push rod is pushed, thereby moving and squeezing the pressing plate, so that the pressing plate squeezes the corrosion inhibitor liquid inside the liquid storage tank to flow into the space between the disk and the sealing plate inside the straight cylinder through the connecting pipe. Under the action of centrifugal force, the corrosion inhibitor liquid flows through the inside of the telescopic plate to the spraying tank, thereby performing a liquid replenishing action on the spraying tank.

[0015] Further, an anti-corrosion layer is coated on the inner and outer surfaces of the housing.

[0016] The anti-corrosion layer coated on the housing can effectively slow down the corrosion rate of the housing, thereby extending the overall service life of the axial flow fan and reducing the maintenance and replacement frequency of the equipment.

[0017] Further, the ring plate is a magnetic shielding plate.

[0018] In order to make the magnetic force between the magnetic rod and the disk and the magnetic force between the slip ring and the sealing plate not affect each other and avoid the influence between magnetic forces during the working process.

[0019] Further, both the slip ring and the sealing plate are made of magnetic materials, and the slip ring and the sealing plate have the same magnetism.

[0020] In order to control the movement of the sealing plate during the movement of the slip ring, thereby changing the size of the channel blocked by the sealing plate between the telescopic plate and the straight cylinder, further controlling the spraying dose of the corrosion inhibitor liquid, and making corresponding adjustments to the different degrees of corrosion of the internal components caused by the volume of gas flowing through the axial flow fan per unit time, so that the corrosion inhibitor liquid is fully utilized under different working conditions and waste is avoided.

[0021] Further, the double-shaft motor is a worm and worm double-output shaft motor.

[0022] When there is a speed difference between the impeller rotation speed and the corrosion inhibitor liquid spraying frequency, during the rotation of the impeller, the corrosion inhibitor liquid can be sprayed onto the surfaces of the impeller and other components inside the axial flow fan at different times and at different angles, reducing the blind areas not covered by the corrosion inhibitor liquid, thereby more comprehensively protecting the internal components of the axial flow fan from corrosion.

[0023] Further, a dust-proof net is provided on one side of the air inlet of the housing.

[0024] In order to isolate most of the dust contained in the external gas outside the dust-proof net, make the axial flow fan operate more smoothly, reduce the extra noise caused by dust, and provide a quieter working environment.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, the rotation of the ring plate drives the sliding cylinder to move up and down, causing the magnetic rod to swing left and right. When the distance between the magnetic rod and the ring plate is the closest, under the action of opposite-sex attraction, while the magnetic rod attracts the disk to move to the right, it also pulls the cleaning block to move, scraping the dust and impurities on the surface of the impeller. When the magnetic rod rotates to a farther distance from the ring plate, under the action of the self-restoring force of the return spring, the cleaning block is pulled back to its original position, thus scraping the impurities on the impeller blades again, improving the self-cleaning ability of the impeller, avoiding the accumulation of pollutants such as dust and impurities in the air on the blades, increasing the resistance of the axial flow fan, reducing the air volume and air pressure of the axial flow fan, resulting in a decrease in the working efficiency of the axial flow fan. At the same time, the adsorption of impurities will also increase the power of the axial flow fan. The cleaning of impurities saves the power output of the axial flow fan, achieving the technical effect of energy conservation.

[0026] 2. In the present invention, under the action of centrifugal force, the spraying tank stretches the telescopic plate to elongate while rotating and pulls the elastic cord at the same time, causing the sliding ring to move to the left. Under the action of like-sex repulsion, the blocking plate is pushed to move to the left, opening the connection between the telescopic plate and the straight cylinder blocked by the blocking plate. When the spraying tank rotates inside the housing, the spraying tank hits the quartz block, and the instantaneous current signal generated by the quartz block is fed back to the controller, and the controller controls the fan to start. Thus, the fan blows the corrosion inhibitor liquid sprayed from the spraying tank to the surface of the impeller and internal parts for anti-corrosion operation, avoiding corrosion at the impeller and affecting the normal operation of the axial flow fan.

[0027] 3. In the present invention, when the rotation speed of the double-shaft motor is greater, the more air flow passes through the axial flow fan per unit time, resulting in an accelerated corrosion rate of the internal components. At this time, the greater the centrifugal force generated by the double-shaft motor, the greater the distance that the spraying tank pulls the sliding ring to move to the left under the action of the elastic cord, thus increasing the distance that the blocking plate moves to the left, making the connection area between the blocking plate and the telescopic plate smaller, thereby increasing the spraying amount of the corrosion inhibitor liquid to adapt to the anti-corrosion action under different working conditions.

[0028] 4. In the present invention, during the left and right swinging process of the connecting rod, the arc-shaped push rod is pushed to press the pressing plate to extrude the corrosion inhibitor liquid inside the liquid storage tank to flow into the space between the disk and the blocking plate inside the straight cylinder through the connecting pipe. Under the action of centrifugal force, the corrosion inhibitor liquid flows through the inside of the telescopic plate to the spraying tank, thus replenishing the spraying tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of the overall external structure of an axial flow fan with an internal anti-corrosion function according to the present invention; Figure 2 is a schematic diagram of the internal structure of the housing of an axial flow fan with an internal anti-corrosion function according to the present invention; Figure 3 Side view structural schematic diagram of an axial flow fan with internal anti-corrosion function according to the present invention; Figure 4 An axial flow fan with internal anti-corrosion function according to the present invention Figure 3 Schematic diagram of the sectional view taken along line A-A; Figure 5 External structural schematic diagram of a partial cleaning unit of an axial flow fan with internal anti-corrosion function according to the present invention; Figure 6 Schematic diagram of the straight cylinder internal structure of an axial flow fan with internal anti-corrosion function according to the present invention; Figure 7 An axial flow fan with internal anti-corrosion function according to the present invention Figure 5 Another perspective structural schematic diagram; Figure 8 An axial flow fan with internal anti-corrosion function according to the present invention Figure 7 Schematic diagram of the enlarged partial view at position B; Figure 9 Schematic diagram of the installation position structure of the spraying unit and the liquid supplementing unit of an axial flow fan with internal anti-corrosion function according to the present invention; Figure 10 An axial flow fan with internal anti-corrosion function according to the present invention Figure 9 Another perspective structural schematic diagram; Figure 11 An axial flow fan with internal anti-corrosion function according to the present invention Figure 10 Schematic diagram of the enlarged partial view at position C.

[0030] In the figure: 1, mounting frame; 2, housing; 21, dust-proof net; 3, cleaning unit; 31, double-shaft motor; 32, rotating cylinder; 33, impeller; 34, mounting rod; 35, cleaning block; 36, return spring; 37, moving groove; 38, pulling rope; 39, straight cylinder; 310, ring plate; 311, sliding cylinder; 312, magnetic rod; 313, connecting rod; 314, straight rod; 315, magnetic disk; 4, spraying unit; 41, blocking plate; 42, telescopic plate; 43, elastic cord; 44, sliding ring; 45, spraying tank; 46, fan; 47, quartz block; 5, liquid supplementing unit; 51, arc-shaped push rod; 52, pressing plate; 53, liquid storage tank; 54, connecting pipe. Detailed implementation manners

[0031] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment: As Figures 1 - 11 shown, the present invention provides a technical solution: As Figure 1 、 2 、3, and 4 shown, an axial flow fan with an internal anti-corrosion function includes a mounting frame 1, a housing 2, a cleaning unit 3, a spraying unit 4, and a liquid supplementing unit 5. The mounting frame 1 is placed on a horizontal foundation, the housing 2 is fixedly installed on the mounting frame 1, the cleaning unit 3 is fixedly installed inside the housing 2, the spraying unit 4 is fixedly installed inside the housing 2, the spraying unit 4 is slidably connected to the cleaning unit 3, the spraying unit 4 has the function of preventing corrosion of the cleaning unit, and the liquid supplementing unit 5 is fixedly installed inside the housing 2.

[0033] The mounting frame 1 is used to install and fix the housing 2, the housing 2 is used to install and fix the cleaning unit 3, the spraying unit 4, and the liquid supplementing unit 5. The cleaning unit 3 is used for self-cleaning of the blades, the spraying unit 4 is used for internal anti-corrosion of the axial flow fan, and the liquid supplementing unit 5 is used to supplement the liquid inside the spraying unit 4. During the operation of the axial flow fan, the blades of the axial flow fan are cleaned by the cleaning unit 3 to avoid adsorption of dust and impurities, increasing the power output of the axial flow fan. The inside of the axial flow fan is sprayed with a corrosion inhibitor by the spraying unit 4 for anti-corrosion to avoid corrosion of the internal structure and damage of the internal components of the machine. The liquid supplementing unit 5 is used to supplement the corrosion inhibitor in the spraying unit 4.

[0034] As Figure 5 、 6 、7, and 8 shown, the cleaning unit 3 includes a double-shaft motor 31, a rotating cylinder 32, an impeller 33, a mounting rod 34, a cleaning block 35, a return spring 36, a moving groove 37, and a pull rope 38. The fixed end of the double-shaft motor 31 is fixedly installed inside the housing 2 through the mounting rod 34. One end of the output end of the double-shaft motor 31 is fixedly connected to one end of the rotating cylinder 32, and the other end is fixedly connected to a straight cylinder 39. The impeller 33 is fixedly connected to the other end of the rotating cylinder 32. Moving grooves 37 are provided on both sides of the blades of the impeller 33, and the moving grooves 37 are attached to the curved surface of the blades of the impeller 33. The cleaning block 35 is slidably installed in the moving groove 37. An arc-shaped sponge is provided on the side of the cleaning block 35 close to the blades of the impeller 33. One end of the return spring 36 is fixedly connected to the cleaning block 35, and the other end is fixedly connected to the inner wall of the moving groove 37. One end of the pull rope 38 passes through the inside of the impeller 33 and is fixedly connected to the cleaning block 35, and the other end is fixedly connected to a magnetic disk 315. The pull rope 38 is installed inside the rotating cylinder 32.

[0035] As shown Figure 5 , 6 , 7, and 11, the cleaning unit 3 further includes a straight tube 39, an annular plate 310, a sliding tube 311, a magnetic rod 312, a connecting rod 313, a straight rod 314, and a disk 315. The pull rope 38 is installed inside the straight tube 39. The annular plate 310 is fixedly installed at one end of the straight tube 39 away from the double-shaft motor 31. The sliding tube 311 is slidably installed on the magnetic rod 312, and the sliding tube 311 is slidably installed on the annular plate 310 through a round rod. One end of the connecting rod 313 is fixedly connected to the magnetic rod 312, and the other end is rotatably connected to the straight rod 314. The straight rod 314 is fixedly installed inside the housing 2 parallel to the vertical axis. The disk 315 is slidably installed inside the straight tube 39. The disk 315 has a magnetic polarity opposite to that of the magnetic rod 312. The straight tube 39 is slidably connected to the spraying unit 4.

[0036] The external controller controls the double-shaft motor 31 to start. Thus, on the one hand, under the driving action of the rotating cylinder 32, the impeller 33 is driven to rotate, so as to suck gas into the inside of the axial flow fan housing 2. On the other hand, under the driving action of the straight tube 39, the annular plate 310 is driven to rotate. As the annular plate 310 rotates, the sliding tube 311 moves up and down on the magnetic rod 312, causing the magnetic rod 312 to swing left and right. During the process of the magnetic rod 312 swinging left and right, under the driving action of the connecting rod 313, the arc-shaped push rod 51 is pushed to move. When the distance between the magnetic rod 312 and the annular plate 310 is the closest, under the action of opposite-sex attraction, while the magnetic rod 312 attracts the disk 315 to move to the right, under the action of the pull rope 38, the cleaning block 35 is pulled to move, scraping the dust and impurities on the surface of the impeller 33. At this time, the return spring 36 is stretched. When the magnetic rod 312 rotates to a position where the distance from the annular plate 310 is getting farther and farther, under the action of the self-restoring force of the return spring 36, the cleaning block 35 is pulled back to its original position, thereby scraping the impurities on the blades of the impeller 33 again, improving the self-cleaning ability of the impeller 33, avoiding the accumulation of pollutants such as dust and impurities in the air on the blades, increasing the resistance of the axial flow fan, reducing the air volume and air pressure of the axial flow fan, and resulting in a decrease in the working efficiency of the axial flow fan. <>

[0037] As shown Figure 9 , 10As shown in the figure, the spraying unit 4 includes a blocking plate 41, a telescopic plate 42, an elastic cord 43, a sliding ring 44, a spraying tank 45, a blower 46 and a quartz block 47. The blocking plate 41 is slidably installed in the straight cylinder 39. One end of the blocking plate 41 close to the double-shaft motor 31 is connected to the inner wall of the straight cylinder 39 through a buffer spring. The fixed end of the telescopic plate 42 is fixedly installed on the outer surface of the straight cylinder 39. The fixed end of the telescopic plate 42 is conductively connected to the straight cylinder 39. The telescopic end of the telescopic plate 42 is conductively connected to the spraying tank 45. One end of the elastic cord 43 is fixedly connected to the sliding ring 44, and the other end is fixedly connected to the spraying tank 45. The sliding ring 44 is slidably installed on the outer surface of the straight cylinder 39. The blower 46 is fixedly installed on the surface of the spraying tank 45 close to the straight cylinder 39. The quartz block 47 is fixedly installed on the inner wall of the housing 2.

[0038] When the double-shaft motor 31 drives the straight cylinder 39 to rotate, under the action of centrifugal force, while the spraying tank 45 stretches the telescopic plate 42 to elongate, it rotates. At this time, the spraying tank 45 pulls the elastic cord 43, causing the elastic cord 43 to pull the sliding ring 44 to move leftward. Thus, under the action of like charges repelling each other, the blocking plate 41 is pushed to move leftward, opening the communication between the telescopic plate 42 blocked by the blocking plate 41 and the straight cylinder 39. When the spraying tank 45 rotates inside the housing 2, the spraying tank 45 hits the quartz block 47, and the instantaneous current generated by the quartz block 47 is transmitted to the blower 46 to control the blower 46 to start. Thus, the blower 46 blows the corrosion inhibitor solution sprayed from the spraying tank 45 onto the surface of the impeller 33 and the internal parts for anti-corrosion operation, avoiding corrosion at the impeller 33 and affecting the normal operation of the axial-flow fan. When the rotation speed of the double-shaft motor 31 is greater, the more air flows through the axial-flow fan per unit time, resulting in an accelerated corrosion rate of the internal components. At this time, the greater the centrifugal force generated by the double-shaft motor 31, the greater the distance that the spraying tank 45 pulls the sliding ring 44 to move leftward under the action of the elastic cord 43. Thus, the greater the distance that the blocking plate 41 is pushed to move leftward, making the blocked communication area between the telescopic plate 42 and the straight cylinder 39 by the blocking plate 41 smaller, thereby increasing the spraying amount of the corrosion inhibitor solution to adapt to the anti-corrosion actions under different working conditions.

[0039] As Figure 9 、 10 shown in the figure, the liquid supplementing unit 5 includes an arc-shaped push rod 51, a pressing plate 52, a liquid storage tank 53 and a connecting pipe 54. One end of the arc-shaped push rod 51 is fixedly connected to the pressing plate 52, and the other end abuts against the connecting rod 313. The pressing plate 52 is slidably connected to the liquid storage tank 53. The liquid storage tank 53 is fixedly installed on the inner wall of the housing 2. One end of the connecting pipe 54 is conductively connected to the liquid storage tank 53, and the other end penetrates through the disk 315 and extends into the straight cylinder 39.

[0040] During the left - right swinging process of the connecting rod 313, the arc - shaped push rod 51 is pushed, thereby moving and squeezing the pressing plate 52, so that the pressing plate 52 squeezes the corrosion inhibitor liquid inside the liquid storage tank 53 to flow into the space between the magnetic disk 315 and the sealing plate 41 inside the straight cylinder 39 through the connecting pipe 54. Under the action of centrifugal force, the corrosion inhibitor liquid flows through the inside of the telescopic plate 42 to the spraying tank 45, thereby performing a liquid supplementing action on the spraying tank 45.

[0041] As Figure 1 shown, the inner and outer surfaces of the housing 2 are coated with an anti - corrosion layer.

[0042] The anti - corrosion layer coated on the housing 2 can effectively slow down the corrosion rate of the housing 2, thereby extending the overall service life of the axial - flow fan and reducing the maintenance and replacement frequency of the equipment.

[0043] As Figure 11 shown, the ring plate 310 is a magnetic - proof plate.

[0044] In order to make the magnetic force between the magnetic rod 312 and the magnetic disk 315 not affect the magnetic force between the slip ring 44 and the sealing plate 41, and avoid the influence between magnetic forces during the working process.

[0045] As Figure 6 、 9 shown, both the slip ring 44 and the sealing plate 41 are made of magnetic materials, and the slip ring 44 and the sealing plate 41 have the same magnetism.

[0046] In order to control the movement of the sealing plate 41 during the movement of the slip ring 44, thereby changing the size of the channel blocked by the sealing plate 41 between the telescopic plate 42 and the straight cylinder 39, further controlling the spraying dose of the corrosion inhibitor liquid, and making corresponding adjustments to the different degrees of corrosion of the internal components caused by the volume of gas flowing through the axial - flow fan per unit time, so that the corrosion inhibitor liquid can be fully utilized under different working conditions and waste is avoided.

[0047] As Figure 5 、 6 shown, the double - shaft motor 31 is a worm - gear double - output - shaft motor.

[0048] When there is a speed difference between the rotation speed of the impeller 33 and the spraying frequency of the corrosion inhibitor liquid, during the rotation of the impeller 33, the corrosion inhibitor liquid can be sprayed onto the surface of the impeller 33 and other internal components of the axial - flow fan at different times and at different angles, reducing the blind areas not covered by the corrosion inhibitor liquid, thereby more comprehensively protecting the internal components of the axial - flow fan from corrosion.

[0049] As Figure 1 shown, a dust - proof net 21 is arranged on one side of the air inlet of the housing 2.

[0050] In order to isolate most of the dust contained in the external gas outside the dust - proof net 21, make the axial - flow fan operate more smoothly, reduce the extra noise caused by dust, and provide a quieter working environment.

[0051] Working principle of the present invention: The external controller controls the start of the dual-axis motor 31. Thus, on the one hand, driven by the rotating cylinder 32, the impeller 33 rotates, sucking gas into the interior of the axial flow fan housing 2. On the other hand, driven by the straight cylinder 39, the ring plate 310 rotates. As the ring plate 310 rotates, the sliding cylinder 311 moves up and down on the magnetic rod 312, causing the magnetic rod 312 to swing left and right. During the left and right swinging of the magnetic rod 312, the arc-shaped push rod 51 is pushed to move through the transmission of the connecting rod 313. When the distance between the magnetic rod 312 and the ring plate 310 is the closest, under the action of opposite-sex attraction, while the magnetic rod 312 attracts the disk 315 to move to the right, the cleaning block 35 is pulled to move under the action of the pull rope 38, scraping the dust and impurities on the surface of the impeller 33. At this time, the return spring 36 is stretched. When the magnetic rod 312 rotates to a distance from the ring plate 310 that is getting farther and farther, under the action of the self-restoring force of the return spring 36, the cleaning block 35 is pulled back to its original position, thus scraping the impurities on the blades of the impeller 33 again, improving the self-cleaning ability of the impeller 33, avoiding the accumulation of pollutants such as dust and impurities in the air on the blades, increasing the resistance of the axial flow fan, reducing the air volume and air pressure of the axial flow fan, and resulting in a decrease in the working efficiency of the axial flow fan.

[0052] When the dual-axis motor 31 drives the straight cylinder 39 to rotate, under the action of centrifugal force, the spraying tank 45 stretches the telescopic plate 42 to elongate while rotating. At this time, the spraying tank 45 pulls the elastic cord 43, causing the elastic cord 43 to pull the sliding ring 44 to move to the left. Thus, under the action of like-sex repulsion, the blocking plate 41 is pushed to move to the left, opening the connection between the telescopic plate 42 blocked by the blocking plate 41 and the straight cylinder 39. When the spraying tank 45 rotates inside the housing 2, the spraying tank 45 hits the quartz block 47. The instantaneous current signal generated by the quartz block 47 is fed back to the controller, and the controller controls the start of the fan 46. Thus, the fan 46 blows the corrosion inhibitor liquid sprayed from the spraying tank 45 onto the surface of the impeller 33 and internal parts for anti-corrosion operation, avoiding corrosion at the impeller 33 and affecting the normal operation of the axial flow fan. When the rotation speed of the dual-axis motor 31 is greater, the more air flow passes through the axial flow fan per unit time, causing the corrosion rate of the internal components to accelerate. At this time, the greater the centrifugal force generated by the dual-axis motor 31, the greater the distance that the spraying tank 45 pulls the sliding ring 44 to move to the left under the action of the elastic cord 43, thus increasing the distance that the blocking plate 41 moves to the left, making the connection area between the blocking plate 41 and the telescopic plate 42 smaller, thereby increasing the spraying amount of the corrosion inhibitor liquid to adapt to the anti-corrosion action under different working conditions.

[0053] During the left and right swinging process of the connecting rod 313, the arc-shaped push rod 51 is pushed, thereby moving and squeezing the pressing plate 52, so that the pressing plate 52 squeezes the corrosion inhibitor liquid inside the liquid storage tank 53 to flow into the space between the magnetic disk 315 and the sealing plate 41 inside the straight cylinder 39 through the connecting pipe 54. Under the action of centrifugal force, the corrosion inhibitor liquid flows through the inside of the telescopic plate 42 to the spraying tank 45, thereby performing a liquid replenishment action on the spraying tank 45.

[0054] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An axial flow fan with an internal anti-corrosion function, characterized in that: An axial flow fan with an internal anti-corrosion function, comprising a mounting frame (1), a housing (2), a cleaning unit (3), a spraying unit (4) and a liquid replenishing unit (5). The mounting frame (1) is placed on a horizontal base, the housing (2) is fixedly installed on the mounting frame (1), the cleaning unit (3) is fixedly installed inside the housing (2), the spraying unit (4) is fixedly installed inside the housing (2), the spraying unit (4) is slidably connected to the cleaning unit (3), the spraying unit (4) has the function of preventing corrosion of the cleaning unit, and the liquid replenishing unit (5) is fixedly installed inside the housing (2).

2. The axial flow fan with an internal anti-corrosion function according to claim 1, characterized in that: The cleaning unit (3) includes a double-shaft motor (31), a rotating cylinder (32), an impeller (33), a mounting rod (34), a cleaning block (35), a return spring (36), a moving groove (37) and a pulling rope (38). The fixed end of the double-shaft motor (31) is fixedly installed inside the housing (2) through the mounting rod (34). One end of the output end of the double-shaft motor (31) is fixedly connected to one end of the rotating cylinder (32), and the other end is fixedly connected to a straight cylinder (39). The impeller (33) is fixedly connected to the other end of the rotating cylinder (32). Moving grooves (37) are arranged on both sides of the blades of the impeller (33), and the moving grooves (37) are fitted to the curved surfaces of the blades of the impeller (33). The cleaning block (35) is slidably installed in the moving groove (37). An arc-shaped sponge is arranged on the side of the cleaning block (35) close to the blade of the impeller (33). One end of the return spring (36) is fixedly connected to the cleaning block (35), and the other end is fixedly connected to the inner wall of the moving groove (37). One end of the pulling rope (38) passes through the inside of the impeller (33) and is fixedly connected to the cleaning block (35), and the other end is fixedly connected to a magnetic disk (315). The pulling rope (38) is installed inside the rotating cylinder (32).

3. The axial flow fan with an internal anti-corrosion function according to claim 2, characterized in that: The cleaning unit (3) further includes a straight cylinder (39), an annular plate (310), a sliding cylinder (311), a magnetic rod (312), a connecting rod (313), a straight rod (314) and a magnetic disk (315). The pulling rope (38) is installed inside the straight cylinder (39). The annular plate (310) is fixedly installed at the end of the straight cylinder (39) far from the double-shaft motor (31). The sliding cylinder (311) is slidably installed on the magnetic rod (312). The sliding cylinder (311) is slidably installed on the annular plate (310) through a round rod. One end of the connecting rod (313) is fixedly connected to the magnetic rod (312), and the other end is rotatably connected to the straight rod (314). The straight rod (314) is fixedly installed inside the housing (2) parallel to the vertical axis. The magnetic disk (315) is slidably installed inside the straight cylinder (39). The magnetic disk (315) has the opposite magnetism to the magnetic rod (312). The straight cylinder (39) is slidably connected to the spraying unit (4).

4. The axial flow fan with an internal anti-corrosion function according to claim 3, characterized in that: The spraying unit (4) includes a sealing plate (41), a telescopic plate (42), an elastic cord (43), a slip ring (44), a spraying tank (45), a blower (46) and a quartz block (47). The sealing plate (41) is slidably installed in the straight cylinder (39). One end of the sealing plate (41) close to the double-shaft motor (31) is connected to the inner wall of the straight cylinder (39) through a buffer spring. The fixed end of the telescopic plate (42) is fixedly installed on the outer surface of the straight cylinder (39). The fixed end of the telescopic plate (42) is conductively connected to the straight cylinder (39). The telescopic end of the telescopic plate (42) is conductively connected to the spraying tank (45). One end of the elastic cord (43) is fixedly connected to the slip ring (44), and the other end is fixedly connected to the spraying tank (45). The slip ring (44) is slidably installed on the outer surface of the straight cylinder (39). The blower (46) is fixedly installed on one side surface of the spraying tank (45) close to the straight cylinder (39). The quartz block (47) is fixedly installed on the inner wall of the housing (2).

5. The axial flow fan with an internal anti-corrosion function according to claim 1, characterized in that: The liquid supplementing unit (5) includes an arc-shaped push rod (51), a pressing plate (52), a liquid storage tank (53) and a connecting pipe (54). One end of the arc-shaped push rod (51) is fixedly connected to the pressing plate (52), and the other end abuts against the connecting rod (313). The pressing plate (52) is slidably connected to the liquid storage tank (53). The liquid storage tank (53) is fixedly installed on the inner wall of the housing (2). One end of the connecting pipe (54) is conductively connected to the liquid storage tank (53), and the other end penetrates through the disk (315) and extends into the straight cylinder (39).

6. The axial flow fan with an internal anti-corrosion function according to claim 1, characterized in that: The inner and outer surfaces of the housing (2) are coated with an anti-corrosion layer.

7. The axial flow fan with an internal anti-corrosion function according to claim 3, characterized in that: The ring plate (310) is a magnetic shielding plate.

8. The axial flow fan with an internal anti-corrosion function according to claim 4, characterized in that: Both the slip ring (44) and the sealing plate (41) are made of magnetic materials, and the slip ring (44) and the sealing plate (41) have the same magnetism.

9. The axial flow fan with an internal anti-corrosion function according to claim 2, characterized in that: The double-shaft motor (31) is a worm and gear double-output shaft motor.

10. The axial flow fan with an internal anti-corrosion function according to claim 1, characterized in that: A dust-proof net (21) is provided on one side of the air inlet of the housing (2).

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