Self-cleaning fan

Abstract

The invention relates to the technical field of fans, and discloses a self-cleaning fan which comprises a base and a fan housing, a channel is formed in a supporting box, a self-cleaning mechanism is fixed in the channel, a first rotating shaft penetrates through the channel, and the self-cleaning mechanism penetrates through the bottom of the supporting box and is communicated with a driving unfolding mechanism. According to the self-cleaning fan, when dust and impurities in a through hole are cleaned, a fan housing needs to be rotated to a vertical state, the through hole to be cleaned faces downwards, and when the fan housing rotates, one extrusion rod rotates and extrudes a corresponding movable block, a corresponding movable plate and two third pistons to move downwards, and two second pistons move, so that a rotating plate is jacked open; the rotating plate rotates by 90 degrees, so that the cleaning ejector pin is aligned to the through hole, then the two first pistons move, the cleaning ejector pin moves along with the movable plate and extends into the through hole, dust and impurities in the through hole can be conveniently and automatically ejected out, meanwhile, the scraper moves upwards along with the fourth piston, and the scraper can automatically scrape away the impurities.

Description

Technical Field

[0001] The invention relates to the technical field of fans, and in particular to a self-cleaning fan. Background Art

[0002] Fans are widely used in factories, mines, tunnels, cooling towers, vehicles, ships and buildings for ventilation, dust removal and cooling of boilers and industrial furnaces.

[0003] During the ventilation process of the existing fans, dust and impurities mixed in the wind can easily block the ventilation holes on the outer shell, which will affect the ventilation effect. In addition, manual cleaning can generally only clean the dust and impurities attached to the surface of the ventilation holes, and the dust and impurities inside the through holes are difficult to clean. In view of the above problems, the existing equipment needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide a self-cleaning fan to solve the problem that during the ventilation process of the existing fan mentioned in the above background technology, dust impurities mixed in the wind can easily block the ventilation holes on the outer casing, which will affect the ventilation effect, and manual cleaning can generally only clean the dust impurities attached to the surface of the ventilation holes, while the dust impurities inside the through holes are difficult to clean.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a self-cleaning fan, comprising a base and a fan cover, support plates are symmetrically fixed on both sides of the upper end surface of the base, a support box is fixed on the outer end surface of the support plate, a first rotating shaft is rotatably connected in the support box, an extrusion rod is fixed on the outer side of the first rotating shaft, the fan cover is rotatably connected between the two support plates through the first rotating shaft, through holes are symmetrically opened on both sides of the fan cover, a bracket is fixed on the inner top of the fan cover, a third rotating shaft is rotatably connected to the bracket, and fan blades are symmetrically fixed at both ends of the third rotating shaft.

[0006] Grooves are provided on both sides of the top of the fan housing and on both sides of the bottom of the fan housing, and a driving and unfolding mechanism is provided in the groove. The driving and unfolding mechanism includes a rotating plate, and the rotating plate is rotatably connected in the groove. The rotating plate is connected to the fan housing through a scroll spring, and the inner side of the rotating plate is connected to the movable plate through a tension spring, and a cleaning ejector pin is fixed to the inner end surface of the movable plate.

[0007] A channel is provided in the support box, a self-cleaning mechanism is fixed in the channel, the first rotating shaft passes through the channel, and the self-cleaning mechanism passes through the bottom of the support box and is connected to the driving and unfolding mechanism.

[0008] Preferably, a first motor is fixed to the outer side of one of the support boxes, and an output end of the first motor is connected to one of the first rotating shafts.

[0009] Preferably, a second motor is fixed to the bottom of the fan casing, and the top of the second motor is connected to the second rotating shaft, the second rotating shaft passes through the bottom of the bracket and is connected to the first bevel gear, and one side of the first bevel gear is meshed with the second bevel gear, and the second bevel gear is fixed on the outside of the third rotating shaft.

[0010] Preferably, the through holes are distributed on both sides of the fan housing in a rectangular array, and the cleaning ejectors are distributed on the movable plate in a rectangular array.

[0011] Preferably, a first oil cylinder is fixed in the groove, and a first piston is slidably connected in the first oil cylinder, the rotating plate is fixed at the inner end of the first oil cylinder, a second oil cylinder is fixed in the groove, and the second oil cylinder is connected to the first oil cylinder through a hose, a second piston is slidably connected in the second oil cylinder, and a top support column is fixed to the inner end surface of the second piston.

[0012] Preferably, the self-cleaning mechanism comprises a compression spring, and the compression spring is fixed to the inner bottom of the channel, and a movable block is fixed to the top of the compression spring.

[0013] Preferably, a movable plate is fixed at the bottom of the movable block, a third oil cylinder is symmetrically fixed on both sides of the bottom of the support box, and a third piston is slidably connected in the third oil cylinder, and the third piston is symmetrically fixed on both sides of the bottom of the movable plate.

[0014] Preferably, an oil tank is provided in the base, one of the third oil cylinders in each of the support boxes is connected to the same oil tank through a first connecting pipe, and another third oil cylinder in each of the support boxes is connected to two hoses through a second connecting pipe.

[0015] Preferably, a fourth piston is slidably connected in the oil groove, and a scraper is fixed to the upper end surface of the fourth piston, and the scraper passes through the upper end surface of the base.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The self-cleaning fan can achieve the purpose of self-cleaning by using the extrusion rod, fan housing, through hole, fan blade, rotating plate, first piston, movable plate, cleaning ejector pin, second piston, movable block, movable plate, third piston, fourth piston and scraper in coordination with each other. When the fan blade is used to draw air, the through hole can be ventilated. When cleaning the dust and impurities in the through hole, the fan housing needs to be rotated to a vertical state and the through hole to be cleaned faces downward. When the fan housing rotates, one of the extrusion rods rotates and squeezes the corresponding movable block, and the corresponding movable plate and two third pistons move downward, and two of the second pistons move to push open the rotating plate, and the rotating plate rotates 90 degrees so that the cleaning ejector pin is aligned with the through hole. Then two of the first pistons move, and the cleaning ejector pin moves with the movable plate and extends into the through hole, so as to automatically eject the dust and impurities in the through hole. At the same time, the scraper moves upward with the fourth piston, and the scraper can automatically scrape off the impurities. 2. The self-cleaning fan can achieve the purpose of adjusting the exhaust angle through the mutual cooperation of the fan cover, the second rotating shaft, the first bevel gear, the second bevel gear, the third rotating shaft and the fan blades. When the second rotating shaft rotates, the third rotating shaft and the two fan blades rotate under the driving action of the first bevel gear and the second bevel gear, which is convenient for automatic exhaust. The fan cover can be rotated to facilitate the adjustment of the exhaust angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a right-side stereoscopic structural schematic diagram of the present invention; Figure 2 It is a left-side stereoscopic structural schematic diagram of the present invention; Figure 3 It is a front cross-sectional structural schematic diagram of the present invention; Figure 4 It is a front view schematic diagram of the appearance structure of the present invention; Figure 5 For the present invention Figure 3 The enlarged structural diagram at A in the middle; Figure 6 For the present invention Figure 4 The enlarged structural diagram at B in the middle; Figure 7 It is a schematic diagram of the connection structure between the first rotating shaft and the extrusion rod of the present invention; Figure 8 It is a schematic diagram of the connection structure of the rotating plate, the first oil cylinder, the movable plate, the tension spring and the cleaning ejector pin of the present invention; Fig. 9 It is a schematic diagram of the connection structure of the support box, the first rotating shaft, the extrusion rod, the channel and the self-cleaning mechanism of the present invention.

[0018] In the figure: 1, base; 2, support plate; 3, support box; 4, first motor; 5, first rotating shaft; 6, extrusion rod; 7, fan housing; 8, through hole; 9, second motor; 10, second rotating shaft; 11, bracket; 12, first bevel gear; 13, second bevel gear; 14, third rotating shaft; 15, fan blade; 16, groove; 17, drive unfolding mechanism; 1701, rotating plate; 1702, first oil cylinder; 1703, first piston; 1704, movable plate; 1705, pull Extension spring; 1706, cleaning ejector pin; 1707, hose; 1708, second oil cylinder; 1709, second piston; 1710, support column; 18, channel; 19, self-cleaning mechanism; 1901, compression spring; 1902, movable block; 1903, movable plate; 1904, third oil cylinder; 1905, third piston; 1906, first connecting pipe; 1907, second connecting pipe; 1908, oil tank; 1909, fourth piston; 1910, scraper. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figures 1 to 9 The present invention provides a technical solution: a self-cleaning fan, comprising a base 1 and a fan cover 7, support plates 2 are symmetrically fixed on both sides of the upper end surface of the base 1, a support box 3 is fixed on the outer end surface of the support plate 2, a first rotating shaft 5 is rotatably connected in the support box 3, an extrusion rod 6 is fixed on the outer side of the first rotating shaft 5, the fan cover 7 is rotatably connected between the two support plates 2 through the first rotating shaft 5, through holes 8 are symmetrically opened on both sides of the fan cover 7, a bracket 11 is fixed on the inner top of the fan cover 7, a third rotating shaft 14 is rotatably connected to the bracket 11, and fan blades 15 are symmetrically fixed at both ends of the third rotating shaft 14.

[0021] Grooves 16 are provided on both sides of the top of the fan cover 7 and both sides of the bottom of the fan cover 7. A driving deployment mechanism 17 is provided in the groove 16. The driving deployment mechanism 17 includes a rotating plate 1701, which is rotatably connected in the groove 16. The rotating plate 1701 is connected to the fan cover 7 through a spiral spring. The inner side of the rotating plate 1701 is connected to the movable plate 1704 through a tension spring 1705. A cleaning ejector pin 1706 is fixed to the inner end surface of the movable plate 1704.

[0022] A channel 18 is defined in the support box 3 , a self-cleaning mechanism 19 is fixed in the channel 18 , the first rotating shaft 5 passes through the channel 18 , the self-cleaning mechanism 19 passes through the bottom of the support box 3 and is in communication with the driving and unfolding mechanism 17 .

[0023] In this embodiment, Figure 1 , Figure 4 and Figure 7 As shown, a first motor 4 is fixed to the outside of one of the support boxes 3, and the output end of the first motor 4 is connected to one of the first rotating shafts 5. One of the first rotating shafts 5 can rotate under the action of the first motor 4, thereby driving the fan cover 7 and the other first rotating shaft 5 to rotate, making it convenient to adjust the angle of the fan cover 7.

[0024] In this embodiment, Figure 3 As shown, a second motor 9 is fixed to the bottom of the fan housing 7, and the top of the second motor 9 is connected to the second rotating shaft 10, the second rotating shaft 10 passes through the bottom of the bracket 11 and is connected to the first bevel gear 12, and one side of the first bevel gear 12 is meshed with the second bevel gear 13, the second bevel gear 13 is fixed to the outside of the third rotating shaft 14, the second rotating shaft 10 can rotate under the action of the second motor 9, thereby driving the first bevel gear 12 to rotate, thereby driving the second bevel gear 13 to rotate, the third rotating shaft 14 and the two fan blades 15 rotate, which is convenient for automatic exhaust, and the use of two fan blades 15 at the same time can make the exhaust intensity greater.

[0025] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 8 As shown, the through holes 8 are distributed in a rectangular array on both sides of the fan housing 7, and the cleaning ejector pins 1706 are distributed in a rectangular array on the movable plate 1704. The through holes 8 can be used for ventilation, and the cleaning ejector pins 1706 can be used to eject dust and impurities in the through holes 8, thereby achieving a self-cleaning effect.

[0026] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 8As shown, a first oil cylinder 1702 is fixed in the groove 16, and a first piston 1703 is slidably connected in the first oil cylinder 1702, a rotating plate 1701 is fixed to the inner end of the first oil cylinder 1702, a second oil cylinder 1708 is fixed in the groove 16, and the second oil cylinder 1708 is connected to the first oil cylinder 1702 through a hose 1707, a second piston 1709 is slidably connected in the second oil cylinder 1708, and a top support column 1710 is fixed to the inner end surface of the second piston 1709. Before cleaning the through hole 8, The fan cover 7 needs to be rotated 90 degrees and the through hole 8 to be cleaned needs to face downward. At the same time, the corresponding second piston 1709 moves, thereby driving the support column 1710 to move. The support column 1710 pushes open the rotating plate 1701, and the rotating plate 1701 rotates 90 degrees. The cleaning ejector pin 1706 on the corresponding movable plate 1704 corresponds to the through hole 8 to be cleaned. Then the first piston 1703 moves, thereby driving the rotating plate 1701 to move, and the cleaning ejector pin 1706 is inserted into the through hole 8, so as to automatically eject dust and impurities in the through hole 8.

[0027] In this embodiment, Figure 4 , Figure 6 and Fig. 9 As shown, the self-cleaning mechanism 19 includes a compression spring 1901, and the compression spring 1901 is fixed to the inner bottom of the channel 18, and a movable block 1902 is fixed to the top of the compression spring 1901, and the compression spring 1901 supports the movable block 1902. When the extrusion rod 6 rotates with the first rotating shaft 5 and squeezes the movable block 1902, the movable block 1902 moves downward, and when the extrusion rod 6 releases the squeezing of the movable block 1902, the movable block 1902 will automatically pop up under the action of the compression spring 1901.

[0028] In this embodiment, Figure 4 , Figure 6 and Fig. 9 As shown, a movable plate 1903 is fixed to the bottom of the movable block 1902, and a third oil cylinder 1904 is symmetrically fixed on both sides of the bottom of the support box 3, and a third piston 1905 is slidably connected in the third oil cylinder 1904. The third piston 1905 is symmetrically fixed on both sides of the bottom of the movable plate 1903. When the movable block 1902 moves downward, it can drive the movable plate 1903 and the two third pistons 1905 to move downward as a whole.

[0029] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Fig. 9As shown, an oil groove 1908 is opened in the base 1, and one of the third oil cylinders 1904 in each support box 3 is connected to the same oil groove 1908 through the first connecting pipe 1906, and the other third oil cylinder 1904 in each support box 3 is connected to two hoses 1707 through the second connecting pipe 1907. When the movable block 1902 is squeezed and moves downward, the corresponding movable plate 1903 and the two third pistons 1905 move downward as a whole, and the hydraulic oil in one of the third oil cylinders 1904 in the corresponding support box 3 is pressed into the oil groove 1908 through the first connecting pipe 1906, and the hydraulic oil in the other third oil cylinder 1904 in the corresponding support box 3 is pressed into the two hoses 1707 through the second connecting pipe 1907.

[0030] In this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, a fourth piston 1909 is slidably connected in the oil groove 1908, and a scraper 1910 is fixed to the upper end surface of the fourth piston 1909. The scraper 1910 passes through the upper end surface of the base 1. When the third piston 1905 moves downward, the hydraulic oil is pressed into the oil groove 1908. The fourth piston 1909 moves upward under the action of the oil pressure, thereby driving the scraper 1910 to move upward. The scraper 1910 can scrape off dust and impurities in the through hole 8.

[0031] The use method and advantages of the present invention: The working process of the self-cleaning fan is as follows: like Figures 1 to 9 As shown: when the second rotating shaft 10 rotates, the third rotating shaft 14 and the two blades 15 rotate under the driving action of the first bevel gear 12 and the second bevel gear 13, so as to automatically exhaust air. The rotation of the first rotating shaft 5 drives the fan housing 7 to rotate, which is convenient for adjusting the exhaust angle. The through hole 8 is used for ventilation. Before cleaning the dust and impurities in the through hole 8, the fan housing 7 needs to be turned to a vertical state and the through hole 8 to be cleaned faces downward. The squeezing rod 6 rotates with the first rotating shaft 5, and the squeezing rod 6 squeezes the movable block 1902. The movable block 1902, the movable plate 1903 and the two third pistons 1905 are integrally The body moves downward, and the fourth piston 1909 moves upward under the action of oil pressure, thereby driving the scraper 1910 to move upward. Since the stiffness coefficient of the tension spring 1705 is relatively large, the first piston 1703 does not move at first, and the two second pistons 1709 move, thereby pushing open the rotating plate 1701, and the rotating plate 1701 rotates 90 degrees. Then the two first pistons 1703 move, and the movable plate 1704 and the cleaning ejector pin 1706 move accordingly. The cleaning ejector pin 1706 extends into the through hole 8, thereby automatically ejecting dust and impurities in the through hole 8, and the scraper 1910 automatically scrapes away the dust and impurities.

[0032] In summary, the self-cleaning fan achieves the purpose of self-cleaning and adjusting the exhaust angle, and meets people's usage needs.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

[0034] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the protection content of the present invention.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-cleaning fan, comprising a base (1) and a fan housing (7), characterized in that: Support plates (2) are symmetrically fixed on both sides of the upper end surface of the base (1), a support box (3) is fixed on the outer end surface of the support plate (2), a first rotating shaft (5) is rotatably connected inside the support box (3), an extrusion rod (6) is fixed on the outer side of the first rotating shaft (5), the fan housing (7) is rotatably connected between the two support plates (2) via the first rotating shaft (5), through holes (8) are symmetrically opened on both sides of the fan housing (7), a bracket (11) is fixed on the inner top of the fan housing (7), a third rotating shaft (14) is rotatably connected to the bracket (11), and fan blades (15) are symmetrically fixed at both ends of the third rotating shaft (14); Grooves (16) are provided on both sides of the top of the fan housing (7) and on both sides of the bottom of the fan housing (7), and a driving and unfolding mechanism (17) is provided in the groove (16). The driving and unfolding mechanism (17) comprises a rotating plate (1701), and the rotating plate (1701) is rotatably connected in the groove (16). The rotating plate (1701) is connected to the fan housing (7) via a volute spring, and the inner side of the rotating plate (1701) is connected to a movable plate (1704) via a tension spring (1705). A cleaning ejector pin (1706) is fixed to the inner end surface of the movable plate (1704); A channel (18) is provided in the support box (3), a self-cleaning mechanism (19) is fixed in the channel (18), the first rotating shaft (5) passes through the channel (18), and the self-cleaning mechanism (19) passes through the bottom of the support box (3) and is in communication with the driving and unfolding mechanism (17).

2. A self-cleaning fan according to claim 1, characterized in that: A first motor (4) is fixed to the outside of one of the support boxes (3), and an output end of the first motor (4) is connected to one of the first rotating shafts (5).

3. A self-cleaning fan according to claim 1, characterized in that: A second motor (9) is fixed to the bottom of the fan housing (7), and the top of the second motor (9) is connected to a second rotating shaft (10). The second rotating shaft (10) passes through the bottom of the bracket (11) and is connected to a first bevel gear (12). One side of the first bevel gear (12) is meshedly connected to a second bevel gear (13). The second bevel gear (13) is fixed to the outside of a third rotating shaft (14).

4. A self-cleaning blower according to claim 1, characterized in that: The through holes (8) are distributed in a rectangular array on both sides of the fan housing (7), and the cleaning ejector pins (1706) are distributed in a rectangular array on the movable plate (1704).

5. The self-cleaning fan according to claim 1, characterized in that: A first oil cylinder (1702) is fixed in the groove (16), and a first piston (1703) is slidably connected in the first oil cylinder (1702); the rotating plate (1701) is fixed to the inner end of the first oil cylinder (1702); a second oil cylinder (1708) is fixed in the groove (16), and the second oil cylinder (1708) is connected to the first oil cylinder (1702) via a hose (1707); a second piston (1709) is slidably connected in the second oil cylinder (1708), and a supporting column (1710) is fixed to the inner end surface of the second piston (1709).

6. A self-cleaning blower according to claim 1, characterized in that: The self-cleaning mechanism (19) comprises a compression spring (1901), and the compression spring (1901) is fixed to the inner bottom of the channel (18), and a movable block (1902) is fixed to the top of the compression spring (1901).

7. A self-cleaning blower according to claim 6, characterized in that: A movable plate (1903) is fixed at the bottom of the movable block (1902), a third oil cylinder (1904) is symmetrically fixed on both sides of the bottom of the support box (3), and a third piston (1905) is slidably connected in the third oil cylinder (1904), and the third piston (1905) is symmetrically fixed on both sides of the bottom of the movable plate (1903).

8. The self-cleaning fan according to claim 1, characterized in that: An oil tank (1908) is provided in the base (1), one of the third oil cylinders (1904) in each of the support boxes (3) is connected to the same oil tank (1908) via a first connecting pipe (1906), and another third oil cylinder (1904) in each of the support boxes (3) is connected to two hoses (1707) via a second connecting pipe (1907).

9. A self-cleaning blower according to claim 8, characterized in that: A fourth piston (1909) is slidably connected in the oil groove (1908), and a scraper (1910) is fixed to the upper end surface of the fourth piston (1909), wherein the scraper (1910) penetrates the upper end surface of the base (1).

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