Air filtering device of wind power generation gearbox

Abstract

The utility model relates to the technical field of wind power generation equipment, in particular to an air filtering device of a wind power generation gearbox, which comprises a support frame sleeved on a breathing plug, a filter screen and a first pressing mechanism, the support frame is of a cylindrical structure and is provided with a hollow peripheral side surface, the filter screen is sleeved on the peripheral side surface of the support frame, and the first pressing mechanism is arranged on the filter screen. One end of the first pressing mechanism is fixedly connected with the top of the supporting frame, and the other end of the first pressing mechanism abuts against the filter screen to press the filter screen. The breathing plug is sleeved with the hollowed-out supporting frame, the filter screen is pressed on the hollowed-out surface of the supporting frame through the first pressing mechanism, air entering and exiting from the breathing plug is filtered through the filter screen, the situation that external particles enter the breathing plug is reduced, and therefore the possibility that the breathing plug is blocked is reduced. According to the scheme, the filter screen is mounted outside the breathing plug, so that the filter screen can be conveniently replaced and cleaned by changing the pressing state of the first pressing mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation equipment, and more specifically, to an air filtering device for a wind power generation gear box. Background Art

[0002] A wind turbine is a device that uses wind power to generate electricity. Its gearbox is the device that transmits power within the generator set. Gearboxes are typically equipped with a breather plug, which connects the interior of the gearbox to the outside world and maintains a constant pressure within the gearbox. To prevent the breather plug from becoming clogged by airborne dust particles, a filter can be installed within the breather plug. However, if the filter is directly fixed to the breather plug, it is difficult to replace and clean. Therefore, a new air filtration device for wind turbine gearboxes is needed. Utility Model Content

[0003] The utility model aims to overcome the problem in the prior art that it is inconvenient to replace and clean the filter screen used for the breathing plug of a wind power generation gear box, and provides an air filter device for a wind power generation gear box to facilitate the replacement and cleaning of the filter screen.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: an air filtering device for a wind power gearbox, comprising: a support frame for being sleeved on a breathing plug, a filter screen and a first clamping mechanism, the support frame is a cylindrical structure and has a hollow outer peripheral side surface, the filter screen is sleeved on the outer peripheral side surface of the support frame, one end of the first clamping mechanism is fixedly connected to the top of the support frame, and the other end of the first clamping mechanism abuts against the filter screen to compress the filter screen.

[0005] In the technical solution of this utility model, a support frame is sleeved onto the breather plug, and a first pressing mechanism presses the filter against the hollowed-out outer peripheral side of the support frame. The filter filters air entering and exiting the breather plug, reducing the ingress of foreign particles and thereby reducing the possibility of clogging. Because the filter is mounted on the outside of the breather plug, the filter can be easily removed, replaced, and cleaned by changing the pressing state of the first pressing mechanism.

[0006] Furthermore, the first clamping mechanism includes a first mounting seat and a first clamping member, the first mounting seat is fixedly connected to the support frame, the upper end of the first clamping member is rotatably connected to the first mounting seat, and the lower end of the first clamping member abuts against the filter screen to clamp the filter screen.

[0007] In this solution, the filter screen can be pressed against the side hollow surface of the support frame by the first pressing mechanism.

[0008] Furthermore, the filter screen is annular with an opening, and extension portions are radially extended on both sides of the opening of the filter screen. Two first pressing members are provided, and the two first pressing members are respectively located on both sides of the extension portion and abut against the extension portion.

[0009] In this solution, an extension portion of the filter screen is provided to facilitate clamping and fixing the filter screen.

[0010] Furthermore, the lower ends of the two first pressing members are fixedly connected to magnets, and the two magnets attract each other and abut against two sides of the extension portion.

[0011] In this solution, the two first pressing members are attracted to each other by the magnets so as to move the two first pressing members closer to each other and press the filter screen.

[0012] Furthermore, the first pressing mechanism further includes two pushing members, each of which is fixedly connected to each of the first pressing members and extends radially outward from the support frame.

[0013] In this solution, a pushing member is provided to facilitate manual pushing of the first pressing member for rotation.

[0014] Furthermore, a card block is provided on both sides of the extension portion of the filter screen, a card slot for accommodating the card block is formed between the pushing member and the first pressing member, and the card block is plugged into the card slot.

[0015] In this solution, the first pressing member and the filter screen are fixed by plugging the clamping block and the clamping slot.

[0016] Furthermore, the wind power generation gearbox air filtering device also includes a second pressing mechanism, one end of the second pressing mechanism is fixedly connected to the top of the gearbox, and the other end of the second pressing mechanism abuts against the top of the support frame.

[0017] In this solution, the support frame can be pressed and fixed on the gear box by the second pressing member.

[0018] Furthermore, the second clamping mechanism includes a second mounting seat and a second clamping member, the second mounting seat is fixedly connected to the top of the gear box, one end of the second clamping member is rotatably connected to the second mounting seat, and the other end of the second clamping member abuts against the top of the support frame.

[0019] In this solution, the second mounting base is rotated to facilitate fixing or removing the support frame.

[0020] Furthermore, two second pressing members are provided, and opposite sides of the two second pressing members are respectively provided with an insertion condition and a slot member, and the insertion condition is plugged into the slot member.

[0021] In this solution, the two second pressing members can be fixedly pressed against the upper surface of the support frame by the insertion conditions and the slot member, thereby preventing the support frame from loosening.

[0022] Furthermore, a sealing ring is provided between the bottom of the support frame and the gear box.

[0023] In this solution, the sealing performance between the support frame and the gear box can be improved by providing a sealing ring.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] First, the wind turbine gearbox air filtration device of the present invention utilizes a support frame that is sleeved onto a breather plug. A first pressing mechanism presses a filter against the hollowed-out outer side of the support frame. The filter filters air entering and exiting the breather plug, reducing the ingress of foreign particles and the likelihood of the breather plug becoming clogged. Because the filter is mounted on the outside of the breather plug, the filter can be easily removed, replaced, and cleaned by changing the pressing position of the first pressing mechanism.

[0026] 2. In the present invention, since a second pressing mechanism is provided to press the support frame onto the gear box, by adjusting the pressing state of the second pressing mechanism, the support frame can be easily removed to facilitate replacement and cleaning of the breathing plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of the wind power generation gearbox air filter device of the utility model;

[0028] Figure 2 yes Figure 1 A magnified view of point A;

[0029] Figure 3 It is a schematic diagram of the exploded structure of the support frame, the filter screen and the first pressing mechanism;

[0030] Figure 4 yes Figure 1 A schematic diagram of the overall structure from another perspective;

[0031] Figure 5 yes Figure 4 Enlarged view of point B.

[0032] In the accompanying drawings: 1. Support frame; 11. Top cover; 12. Support column; 13. Ring; 2. Filter; 21. Extension; 22. Block; 3. First clamping mechanism; 31. First mounting seat; 32. First clamping member; 33. Pushing member; 34. Slot; 4. Second clamping mechanism; 41. Second mounting seat; 411. Cylindrical member; 412. Fixing plate; 42. Second clamping member; 43. Insertion condition; 44. Slot member; 5. Magnet; 6. Sealing ring; 7. Connecting plate; 100. Gear box. DETAILED DESCRIPTION

[0033] The drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate the embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will understand that some well-known structures and their descriptions may be omitted from the drawings. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0034] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0036] Example 1

[0037] refer to Figures 1 to 5 This embodiment discloses an air filtration device for a wind power gearbox, comprising a support frame 1 for being sleeved on a breathing plug, a filter screen 2 and a first pressing mechanism 3. The support frame 1 is a cylindrical structure and has a hollow outer peripheral side surface. The filter screen 2 is sleeved on the outer peripheral side surface of the support frame 1. One end of the first pressing mechanism 3 is fixedly connected to the top of the support frame 1, and the other end of the first pressing mechanism 3 abuts against the filter screen 2 to press the filter screen 2.

[0038] In this embodiment, the hollow support frame 1 is sleeved on the breathing plug, and the filter screen 2 is pressed against the hollow surface of the support frame 1 by the first pressing mechanism 3. The air entering and exiting the breathing plug is filtered by the filter screen 2, thereby reducing the possibility of external particles entering the breathing plug and reducing the possibility of the breathing plug being blocked.

[0039] Since the filter screen 2 is installed outside the breathing plug in this solution, the filter screen 2 can be easily replaced and cleaned by changing the pressing state of the first pressing mechanism 3 .

[0040] refer to Figure 3 The side of the support frame 1 is a hollow surface. Specifically, the support frame 1 includes a top cover 11, support columns 12, and a circular ring 13. Multiple support columns 12 are fixedly connected along the circumference of the circular ring 13. The support columns 12 are arranged vertically along the axial direction, and the top cover 11 is fixedly connected to the top of the support columns 12. This forms a frame structure with an open bottom, hollowed-out sides, and a closed top. The circumferentially distributed support columns 12 form the hollow surface of the support frame 1. Air can enter and exit through the hollow surface of the support frame 1, and the filter 2 is coated on the hollow surface of the support frame 1 to filter the incoming and outgoing air.

[0041] The support frame 1 can be integrally formed, or can be formed by welding the top cover 11, the support column 12 and the ring 13 or connecting them in other fixing ways.

[0042] refer to Figure 2 and Figure 3 The first clamping mechanism 3 is arranged on the side of the support frame 1. The first clamping mechanism 3 includes a first mounting seat 31 and a first clamping member 32. The first mounting seat 31 is fixedly connected to the support frame 1. The upper end of the first clamping member 32 is rotatably connected to the first mounting seat 31. The lower end of the first clamping member 32 abuts against the filter screen 2 to clamp the filter screen 2.

[0043] Specifically, the first mounting seat 31 can be a rectangular block-shaped part, and the bottom surface of the first mounting seat 31 is fixedly connected to the top of the support frame 1, and can be fixed by bolts or welding. A first connecting hole is provided on the side of the first mounting seat 31, and the upper end of the first clamping member 32 is rotatably connected to the first connecting hole. The first clamping member 32 can be a strip-shaped part, and a rotating shaft extends from the upper end of the first clamping member 32 in a direction perpendicular to the length of the first clamping member 32, and the rotating shaft is rotatably connected to the first connecting hole. A bearing can also be provided between the rotating shaft and the first connecting hole to facilitate the rotation of the rotating shaft relative to the first connecting hole.

[0044] The lower end of the first pressing member 32 is located on the side away from the upper end. The upper end of the first pressing member 32 is rotatably connected to the first mounting base 31, and the lower end of the first pressing member 32 presses the filter 2 against the hollow surface of the support frame 1. Therefore, the position of the first pressing member 32 can be changed by rotating it, thereby changing the pressing state of the first pressing mechanism 3, making it easier to remove and replace the filter 2.

[0045] refer to Figure 2 and Figure 3 In this embodiment, the filter screen 2 is annular with an opening, and an extension portion 21 extends radially on both sides of the opening of the filter screen 2. Two first pressing members 32 are provided, and the two first pressing members 32 are respectively located on both sides of the extension portion 21 and abut against the extension portion 21.

[0046] Specifically, the elongated length of the filter screen 2 is greater than the circumferential diameter of the side of the support frame 1. Therefore, after the filter screen 2 wraps around the side of the support frame 1, there is an excess portion. The excess filter screen 2 at both ends extends radially to form extensions 21. Extensions 21 extend from both sides of the wraparound opening. A pressing member is provided on each side of the extension 21 to facilitate pressing the extensions 21 on both sides, so that the filter screen 2 can be tightly attached to the support frame 1.

[0047] refer to Figure 2 and Figure 3 In this embodiment, the lower ends of the two first pressing members 32 are fixedly connected to magnets 5, and the two magnets 5 attract each other and clamp the extension portion 21. The magnets 5 can be fixedly connected to the surface of the first pressing member 32 or embedded in the interior of the first pressing member 32. The opposite polarities of the two magnets 5 can attract each other, so that the two first pressing members 32 can move closer to each other and press the filter 2. If the filter 2 needs to be removed, it is only necessary to separate the pair of magnets 5 with a little force, and then the two first pressing members 32 can be rotated to disengage the filter 2, and the filter 2 can be removed, which is convenient to use.

[0048] Example 2

[0049] refer to Figures 2 to 3 This embodiment is similar to the first embodiment, except that in this embodiment, the first pressing mechanism 3 further includes two pushing members 33, each of which is fixedly connected to each of the first pressing members 32 and extends radially along the support frame 1. The pushing members 33 may be shaped like a handle, and grasping the pushing members 33 and applying force thereto facilitates rotation of the first pressing members 32.

[0050] refer to Figure 2 and Figure 3In this embodiment, blocks 22 are provided on both sides of the extension portion 21 of the filter 2, and a slot 34 for accommodating the block 22 is formed between the pusher 33 and the first pressing member 32, and the block 22 is plugged into the slot 34. Specifically, the block 22 may extend perpendicularly to the surface of the extension portion 21, and may be a long strip extending along the height direction of the support frame 1. A corresponding slot 34 is also formed between the pusher 33 and the first pressing member 32. When the first pressing mechanism 3 presses the filter 2, the block 22 is plugged into the slot 34 on the corresponding side, so that the first pressing mechanism 3 and the filter 2 are relatively stably connected and not easy to loosen.

[0051] Example 3

[0052] refer to Figure 4 and Figure 5 This embodiment is similar to Embodiment 1 or Embodiment 2, except that in this embodiment, the wind turbine gearbox air filtration device further includes a second pressing mechanism 4. One end of the second pressing mechanism 4 is fixedly connected to the top of the gearbox 100, and the other end of the second pressing mechanism 4 abuts against the top of the support frame 1, thereby pressing the support frame 1 against the gearbox 100. Specifically, the corresponding end of the second pressing mechanism 4 is pressed against the top of the support frame 1. The second pressing mechanism 4 is used to fix the support frame 1 to the gearbox 100 while facilitating the removal of the support frame 1.

[0053] refer to Figure 5 The second clamping mechanism 4 includes a second mounting seat 41 and a second clamping member 42. The second mounting seat 41 is fixedly connected to the top of the gear box 100. The second clamping member 42 is rotatably connected to the second mounting seat 41. The other end of the second clamping member 42 abuts against the top of the support frame 1 and is pressed against the top of the support frame 1.

[0054] Specifically, two second clamping members 42 are provided, and the second mounting seat 41 can be fixed to the gear box 100 by bolts or welded. For example, in this embodiment, the second mounting seat 41 includes a fixing plate 412 and a cylindrical member 411, wherein the cylindrical member 411 is provided in pair. The bottom surface of the cylindrical member 411 and the gear box 100 can be welded and fixed, and the top of the cylindrical member 411 forms a stepped shaft section with a reduced diameter. An annular portion is provided at one end of the second clamping member 42, and the annular portion is sleeved on the stepped shaft section so that the second clamping member 42 can be rotatably connected to the cylindrical member 411. The fixing plate 412 can be welded to the top of the stepped shaft section to limit the annular portion and prevent the annular portion from detaching from the cylindrical member 411 from the top.

[0055] The second pressing member 42 is rotated to the top of the support frame 1 to press the support frame 1 onto the gear box 100. The second pressing member 42 is rotated to both sides to remove the support frame 1 from the gear box 100 so that the breathing plug can be replaced and cleaned.

[0056] refer to Figure 5 , an insertion guide 43 and a slot member 44 are respectively provided on opposite sides of the two second pressing members 42. The insertion guide 43 and the slot member 44 are plugged into each other. Specifically, the insertion guide 43 has a protrusion, and the slot member 44 has a groove. The protrusion and the groove are arranged on opposite sides of the two second pressing members 42. When the two second pressing members 42 are closed, the insertion guide 43 contacts the slot member 44, causing the protrusion to engage with the groove, thereby fixing the two pressing members relative to each other and preventing the support frame 1 from loosening.

[0057] refer to Figure 5 In this embodiment, a sealing ring 6 is provided between the bottom of the support frame 1 and the gearbox 100. The sealing ring 6 can be made of corrosion-resistant rubber. Under the action of the second pressing mechanism 4, the support frame 1 is pressed against the gearbox 100. However, the air filtration effect may be affected due to the incomplete fit at the connection between the support frame 1 and the gearbox 100. The provision of the sealing ring 6 can improve the sealing performance. The sealing ring 6 can be replaced by rotating the second pressing mechanism 4 and removing the support frame 1, making it very convenient to use.

[0058] refer to Figure 1 In some embodiments, a connecting plate 7 may be further provided between the support frame 1 and the gear box 100. The bottom surface of the connecting plate 7 is an arcuate surface that matches the outer surface of the gear box 100, and the top surface of the connecting plate 7 is a flat surface. An opening is provided in the middle of the connecting plate 7 to expose the breathing plug. The connecting plate 7 facilitates the installation of the support frame 1 and the second pressing member 42 on the surface of the gear box 100.

[0059] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An air filter device for a wind power generation gearbox, characterized by: The invention comprises a support frame (1) for being sleeved on a breathing plug, a filter screen (2) and a first pressing mechanism (3); the support frame (1) is a cylindrical structure having a hollow outer peripheral side surface; the filter screen (2) is sleeved on the outer peripheral side surface of the support frame (1); one end of the first pressing mechanism (3) is fixedly connected to the top of the support frame (1); the other end of the first pressing mechanism (3) abuts against the filter screen (2) to press the filter screen (2).

2. The wind power generation gearbox air filter device according to claim 1, characterized in that: The first pressing mechanism (3) comprises a first mounting seat (31) and a first pressing member (32), wherein the first mounting seat (31) is fixedly connected to the top of the support frame (1), the upper end of the first pressing member (32) is rotatably connected to the first mounting seat (31), and the lower end of the first pressing member (32) abuts against the filter screen (2) to press the filter screen (2).

3. The wind power generation gearbox air filter device according to claim 2, characterized in that: The filter screen (2) is annular with an opening, and extension portions (21) extend radially from both sides of the opening of the filter screen (2). Two first pressing members (32) are provided, and the two first pressing members (32) are respectively located on both sides of the extension portion (21) and abut against the extension portion (21).

4. The wind power generation gearbox air filter device according to claim 3, characterized in that: The lower ends of the two first pressing members (32) are both fixedly connected to magnets (5), and the two magnets (5) attract each other and abut against both sides of the extension portion (21).

5. The wind power generation gearbox air filter device according to claim 4, characterized in that: The first pressing mechanism (3) further comprises two pushing members (33), each of the pushing members (33) being fixedly connected to each of the first pressing members (32) and extending radially outward from the support frame (1).

6. The wind power generation gearbox air filter device according to claim 5, characterized in that: Blocks (22) are provided on both sides of the extension portion (21) of the filter screen (2), and a slot (34) for accommodating the block (22) is formed between the pushing member (33) and the first pressing member (32), and the block (22) is plugged into the slot (34).

7. The wind power generation gearbox air filter device according to claim 1, characterized in that: The wind power generation gearbox air filter device further comprises a second pressing mechanism (4), one end of the second pressing mechanism (4) is fixedly connected to the top of the gearbox (100), and the other end of the second pressing mechanism (4) abuts against the top of the support frame (1).

8. The wind power generation gearbox air filter device according to claim 7, characterized in that: The second pressing mechanism (4) comprises a second mounting seat (41) and a second pressing member (42), wherein the second mounting seat (41) is fixedly connected to the top of the gear box (100), one end of the second pressing member (42) is rotatably connected to the second mounting seat (41), and the other end of the second pressing member (42) abuts against the top of the support frame (1).

9. The wind power generation gearbox air filter device according to claim 8, characterized in that: Two second pressing members (42) are provided, and opposite sides of the two second pressing members (42) are respectively provided with an inserting condition (43) and a slot member (44), and the inserting condition (43) is plugged into the slot member (44).

10. The wind power generation gearbox air filter device according to claim 1, characterized in that: A sealing ring (6) is provided between the bottom of the support frame (1) and the gear box (100).

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