An oil guiding and collecting device

Abstract

The utility model discloses an oil liquid guiding and collecting device relates to sealed technical field, including support spare, support spare is equipped with the dustproof seal of resistance to the outer circumferential wall of main shaft, is equipped with the first oil return hole in support spare, and the end cover is equipped with the second oil return hole, and the passage for intercommunication of both is equipped between the first oil return hole and the second oil return hole, and the oil liquid of leakage can return to the bearing from the first oil return hole, the passage and the second oil return hole, thereby avoiding the oil liquid and reducing because of leakage, ensure that the bearing gets fully lubricated, thereby promote the operation life of bearing. First oil return hole is equipped with the first screen, and the second oil return hole is equipped with the second screen, can filter the dust or impurity of outside entry, avoid the impurity and enter the bearing, reduce the wear and tear of bearing. The one end of passage is away from the end cover and is screwed with strong magnetic bolt, can adsorb metal scrap, avoid bearing damage, and convenient artificial cleaning.

Description

Technical Field

[0001] This utility model relates to the field of sealing technology, and in particular to an oil guiding and collecting device. Background Technology

[0002] In the wind power industry, oil leakage is a common fault in wind turbine generator sets. Integrated semi-direct drive wind turbine generator sets are becoming an industry trend, and their main characteristic is that the bearings all use thin oil lubrication. Compared with traditional grease lubrication, thin oil lubrication is more prone to leakage due to its lower viscosity and higher fluidity. Currently, the sealing structure of the main bearings of integrated wind turbine generator sets mainly uses labyrinth seals, supplemented by packing and water seals. From practical application, all types of seals have some degree of leakage, which not only causes pollution inside the nacelle, necessitates tower cleaning, and increases maintenance costs, but can also lead to poor bearing lubrication or even damage due to insufficient oil. Therefore, the recovery and utilization of leaked thin oil from the main bearings is crucial, and there is an urgent need to develop an efficient and reliable collection device to ensure good lubrication. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an oil guiding and collecting device to achieve oil recovery and improve lubrication performance.

[0004] An oil guiding and collecting device according to an embodiment of the present invention is installed in a power generation device. The power generation device includes a main shaft, bearings, and an end cover surrounding the outer periphery of the main shaft. The end cover is equipped with an oil seal, including:

[0005] The support component is fixedly installed on the end cover and located at the bottom of the spindle. The support component has a dust seal that abuts against the outer peripheral wall of the spindle. The support component has a first oil return hole located between the dust seal and the oil seal. The end cover has a second oil return hole. The support component has a channel for connecting the first oil return hole and the second oil return hole. Leaked oil can flow back to the bearing from the first oil return hole, the channel and the second oil return hole. A first filter screen is provided on the first oil return hole and a second filter screen is provided in the second oil return hole. A strong magnetic bolt is screwed to the end of the channel away from the end cover.

[0006] An oil guiding and collecting device according to an embodiment of the present utility model has at least the following beneficial effects:

[0007] This embodiment includes a support member with a dust seal abutting against the outer peripheral wall of the spindle. The support member contains a first oil return hole located between the dust seal and the oil seal. The end cover has a second oil return hole communicating with the first oil return hole. A channel connects the first and second oil return holes, allowing leaked oil to flow back into the bearing through the first oil return hole, the channel, and the second oil return hole. This prevents oil loss due to leakage, ensuring adequate lubrication of the bearing and extending its service life. A first filter screen is installed on the first oil return hole, and a second filter screen is installed in the second oil return hole. These filters remove dust or impurities from the outside, preventing them from mixing with the oil and entering the bearing, thus reducing wear. A strong magnetic bolt is screwed onto the end of the channel furthest from the end cover. This bolt attracts metal debris, preventing it from entering the bearing and causing damage. The magnetic bolt also facilitates manual cleaning of the metal debris.

[0008] According to some embodiments of the present invention, the support member is provided with an oil storage tank located between the dust seal and the oil seal, the first oil return hole is provided in the oil storage tank, and the first filter screen is installed on the bottom wall of the oil storage tank. The oil storage tank can store leaked oil and allow the oil to flow into the first oil return hole.

[0009] According to some embodiments of this utility model, the oil storage tank is provided with an inclined guide surface on the side near the oil seal. The guide surface is inclined downward in the direction away from the oil seal, which can prevent oil from accumulating on the side wall of the oil seal and ensure that leaked oil can enter the first return oil hole.

[0010] According to some embodiments of this utility model, a pressure plate is installed on the outer periphery of the spindle. Along the circumference of the spindle, dustproof plates are provided at both ends of the support member. The ends of the pressure plate abut against the dustproof plates. At the same time, the ends of the dustproof plates abut against the spindle and the shape of their ends is adapted to the outer contour of the spindle, so as to prevent external dust from entering the bearing from both ends of the support member.

[0011] According to some embodiments of this utility model, the support member is provided with a first mounting part, and the end cover is provided with a second mounting part. The first mounting part and the second mounting part press against both sides of the oil seal along the axial direction of the main shaft to realize the installation of the oil seal.

[0012] According to some embodiments of the present invention, a sealing ring and a sealing strip are provided between the support member and the end cover. The sealing ring is wrapped around the outer periphery of the second filter screen, and the sealing strip extends circumferentially along the main shaft. The sealing ring and the sealing strip are used to achieve a seal between the support member and the end cover.

[0013] According to some embodiments of this utility model, the support member is provided with an installation groove, the dust seal is provided with an installation section that is inserted into the installation groove, and the outer side of the installation section is provided with a protruding anti-slip part to achieve stable installation of the dust seal.

[0014] According to some embodiments of the present invention, the support member is provided with a connecting part, and a strong magnetic bolt is screwed onto the connecting part. The connecting part has a first connecting hole, through which a bolt can be passed to achieve the connection between the support member and the end cap.

[0015] According to some embodiments of the present invention, the support member is provided with an annular portion, which is wrapped around the outer peripheral wall of the main shaft, and a dust seal is installed on the annular portion.

[0016] According to some embodiments of the present invention, the dust seal includes a sealing part, a waist part, and a mounting section. The sealing part abuts against the outer peripheral wall of the main shaft, the mounting section is connected to the support member, and the waist part extends in the horizontal direction.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a cross-sectional view of an oil guiding and collecting device according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A magnified view of A in the middle;

[0021] Figure 3 for Figure 2 A magnified view of B in the middle;

[0022] Figure 4 This is a partial front view of an oil guiding and collecting device according to an embodiment of the present invention;

[0023] Figure 5 This is a first axonometric view of the support member in an embodiment of this utility model;

[0024] Figure 6 for Figure 5 A magnified view of C;

[0025] Figure 7 This is a second axonometric view of the support member in an embodiment of this utility model;

[0026] Figure 8 This is an exploded view of the support member in an embodiment of this utility model;

[0027] Figure 9 for Figure 2 A magnified view of D;

[0028] Figure 10 This is a cross-sectional view of the dust seal in an embodiment of this utility model.

[0029] Figure label:

[0030] Main shaft 100; end cover 101; second oil return hole 102; second filter screen 103; second mounting part 104; pressure plate 105; oil seal 106;

[0031] Support 110; Connecting part 111; Annular part 112; Dustproof seal 113; Sealing part 114; Waist part 115; Mounting section 116; Anti-slip part 117; Mounting groove 118; Guide surface 119; Dustproof sheet 120; First mounting part 121; First filter screen 122; First oil return hole 123; Strong magnetic bolt 124; Assembly 125; Protrusion 126; Hollowed-out part 127; Reinforcing rib 128; First connecting hole 129; Oil storage tank 130; Channel 131; First connecting groove 132; Second connecting hole 133; Sealing ring 134; Third connecting hole 135; End face 136; Sealing strip 137; Second connecting groove 138. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] Reference Figure 1 and Figure 2An oil guiding and collecting device according to an embodiment of this utility model is installed in a power generation device. The power generation device includes a main shaft 100, a bearing (not shown in the figure), and an end cover 101 surrounding the outer periphery of the main shaft 100. The end cover 101 is equipped with an oil seal 106, the lip of which is in close contact with the outer peripheral wall of the main shaft 100 to achieve a seal and prevent oil leakage. The oil guiding and collecting device includes a support member 110, which is provided with a dust seal 113 that abuts against the outer peripheral wall of the main shaft 100 to prevent external dust, moisture, and other contaminants from entering the bearing, thus playing a role in dust prevention and auxiliary sealing. The support member 110 is provided with a first oil return hole 123 located between the dust seal 113 and the oil seal 106. The first oil return hole 123 extends radially along the main shaft 100. The end cover 101 is provided with a second oil return hole 102 communicating with the first oil return hole 123. The second oil return hole 102 extends axially along the main shaft 100. A channel 131 is provided between the first oil return hole 123 and the second oil return hole 102 to connect the two. The channel 131 extends axially along the main shaft 100 and passes through the support member 110. Leaked oil can flow back into the bearing from the first oil return hole 123, the channel 131 and the second oil return hole 102, thereby preventing the oil from decreasing due to leakage, ensuring that the bearing is fully lubricated, and thus improving the bearing's service life. A first filter screen 122 is installed on the first oil return hole 123, and a second filter screen 103 is installed in the second oil return hole 102. These filters can remove dust or impurities from the outside, preventing impurities from mixing with the oil and entering the bearing, thus reducing bearing wear. A strong magnetic bolt 124 is screwed onto the end of the channel 131 away from the end cover 101. This bolt can attract metal debris, preventing it from entering the bearing and causing damage. The strong magnetic bolt 124 can also attract metal debris, facilitating manual cleaning.

[0037] It is understood that the support member 110 is provided with a first mounting part 121 and the end cover 101 is provided with a second mounting part 104. Both the first mounting part 121 and the second mounting part 104 extend radially toward the main shaft 100. The first mounting part 121 and the second mounting part 104 press against the oil seal 106 on both sides along the axial direction of the main shaft 100 to achieve stable installation of the oil seal 106 and avoid oil leakage.

[0038] Reference Figure 5 and Figure 7The support member 110 is provided with a connecting part 111, and the connecting part 111 has a first connecting hole 129. The first connecting hole 129 can be used to pass a bolt to connect the support member 110 to the end cover 101, thereby achieving the fixed installation of the support member 110. At the same time, the inner wall of the end of the channel 131 away from the end cover 101 has internal threads. The strong magnetic bolt 124 is screwed into the connecting part 111, and its outer peripheral wall is threaded to the inner peripheral wall of the channel 131. Therefore, the strong magnetic bolt 124 is easy to disassemble, and the impurities filtered at the second filter screen 103 (which remain in the channel 131) can be cleaned periodically, making maintenance easy.

[0039] Reference Figure 5 and Figure 6 The support member 110 has an annular portion 112, the annular portion 112 has a mounting groove 118, and the dust seal 113 is installed in the annular portion 112, as shown in the reference. Figure 9 The dust seal 113 includes a sealing portion 114, a waist portion 115, and a mounting section 116. The sealing portion 114 is a finger-type sealing structure and gradually thickens from the part abutting the main shaft 100 towards the waist portion 115 to improve sealing durability and fit. The sealing portion 114 abuts against the outer peripheral wall of the main shaft 100. The mounting section 116 is inserted into the mounting groove 118. The waist portion 115 extends horizontally to enhance the overall structural stability. Simultaneously, the outer side of the mounting section 116 is provided with a protruding anti-slip part 117 to ensure stable installation of the dust seal 113 and prevent loosening or detachment in a vibrating environment. (Refer to...) Figure 10 In other embodiments, the waist 115 extends radially along the main axis 100.

[0040] Reference Figure 9 The annular portion 112 is also provided with a third connecting hole 135. The third connecting hole 135 is located on the side away from the end cover 101 and is connected to the mounting groove 118. The third connecting hole 135 has an internal thread, so a bolt can be screwed into the third connecting hole 135. The bolt can abut against the mounting section 116 of the dust seal 113, thereby making the dust seal 113 stably inserted into the mounting groove 118, avoiding the dust seal 113 from loosening or falling off due to running friction or vibration, so as to ensure a stable dustproof effect.

[0041] Understandably, an oil reservoir 130 is provided within the annular portion 112, located between the dust seal 113 and the oil seal 106, for temporarily storing oil leaking from the oil seal 106. A first oil return hole 123 is provided at the bottom of the oil reservoir 130, and a first filter screen 122 is installed at the inlet of this hole for preliminary filtration of the oil, removing larger particles and contaminants. Furthermore, an inclined guide surface 119 is designed on the side of the oil reservoir 130 near the oil seal 106. This inclined surface slopes downwards from the oil seal 106 side towards the interior of the oil reservoir 130, allowing the oil to flow smoothly into the oil reservoir 130 and be guided to the first oil return hole 123, preventing oil accumulation on the oil seal 106 side or flow in an unintended direction. Understandably, the guide surface 119 can be an inclined plane or an inclined arc surface.

[0042] Reference Figure 4 The annular portion 112 is arc-shaped and surrounds the outer circumference of the main shaft 100. Its curvature can be designed according to the actual leakage range. In this embodiment, the central angle corresponding to the arc length of the annular portion 112 is 72° to cover the leakage area from the 5 o'clock to 7 o'clock position of the main shaft 100, maximizing the collection of leaked oil. Furthermore, for other areas around the outer circumference of the main shaft 100, a pressure plate 105 is fixedly connected to the end cover 101. The pressure plate 105 can press against the side wall of the oil seal 106, ensuring that the oil seal 106 is tightly installed inside the end cover 101.

[0043] In some embodiments, refer to Figure 8 The annular portion 112 can be assembled from multiple components 125. Especially when the arc length is long (e.g., exceeding 1 meter), this modular structure can effectively reduce manufacturing difficulty, mold costs, and installation complexity. Components 125 are typically configured as three pieces, with the left and right pieces being symmetrical and equal, and the middle component 125 being adjustable according to the actual size. Furthermore, the ends of the components 125 located on the left and right sides of the connecting portion 111 are provided with protrusions 126, and correspondingly, the two ends of the middle component 125 are provided with recesses (not shown in the figure) for inserting the protrusions 126, thereby realizing the interlocking between the components 125 to enhance the connection strength and overall stability.

[0044] Reference Figure 7The support member 110 has dustproof plates 120 at both ends along the circumference of the main shaft 100. The dustproof plates 120 abut against the outer peripheral wall of the main shaft 100, and the end of the pressure plate 105 abuts against the dustproof plates 120. Simultaneously, both ends of the support member 110 have second connecting holes 133 for screwing bolts, and the dustproof plates 120 also have through holes at corresponding positions. Therefore, the dustproof plates 120 can be fixed to both ends of the annular portion 112 by bolts to prevent dust from entering the oil collection area from both sides of the annular portion 112. Furthermore, the end of the dustproof plate 120 has an end face 136, the shape of which is adapted to the outer contour of the main shaft 100, and there is a certain gap between the end face 136 and the outer peripheral wall of the main shaft 100. This prevents dust or foreign objects from entering the oil reservoir 130 while avoiding friction between the dustproof plates 120 and the main shaft 100 during rotation, thus preventing fragments generated by the dustproof plates 120 from entering the oil reservoir 130. It is understood that different dustproof sheets 120 can be selected according to the outer contour shape of different models of spindle 100 to ensure that the shape of end face 136 matches the outer contour shape of spindle 100, thereby ensuring a good dustproof effect. In this embodiment, the dustproof sheet 120 is made of rubber material such as NBR, which gives it a certain elasticity, toughness and wear resistance, and can fit well into the shape of spindle 100 to achieve effective dust prevention.

[0045] To further ensure sealing performance, a sealing ring 134 is also provided between the support member 110 and the end cap 101. (Refer to...) Figure 5 The contact surface between the support member 110 and the end cap 101 is provided with a first connecting groove 132. A sealing ring 134, which is installed around the outer periphery of the second filter screen 103, is installed in the first connecting groove 132 to achieve a static seal. In this embodiment, the sealing ring 134 is an O-ring. Further, referring to... Figure 6 and Figure 7 A sealing strip 137 is also provided between the support member 110 and the end cap 101. The sealing strip 137 extends circumferentially along the main shaft 100 and is close to the first mounting portion 121. The support member 110 has a second connecting groove 138 extending along the annular portion 112. The sealing strip 137 is installed in the second connecting groove 138. When the support member 110 and the end cap 101 are fixedly connected, the sealing strip 137 can abut against the outer wall of the end cap 101, preventing oil leakage from the gap between the support member 110 and the end cap 101 and improving the sealing effect. In this embodiment, the cross-section of the sealing strip 137 is O-shaped.

[0046] It is understandable that the support member 110 can be made of metal casting to obtain higher strength. In this embodiment, it is preferably made of engineering plastics such as PC (polycarbonate) with added glass fiber. This material combination has good mechanical strength, oil resistance and corrosion resistance, while significantly reducing the weight of the component, reducing the processing difficulty, and facilitating on-site installation and maintenance. Furthermore, the annular portion 112 has multiple hollow portions 127 and reinforcing ribs 128 on the outer wall opposite to the end cover 101. The reinforcing ribs 128 are spaced apart from the hollow portions 127 and located on both sides of the connecting portion 111. The multiple hollow portions 127 are symmetrically distributed, which effectively saves materials, reduces weight and ensures structural uniformity. The reinforcing ribs 128 can enhance the overall structural strength and resistance to deformation.

[0047] In the actual installation process, firstly, the oil seal 106 is installed into the end cover 101 and pressed and fixed by the pressure plate 105, ensuring that the lip of the oil seal 106 is evenly fitted to the outer peripheral wall of the spindle 100. Then, the support member 110 is installed directly below the bottom of the end cover 101 with bolts, ensuring that the arc-shaped structure of the annular part 112 is concentric with the spindle 100, and confirming that the channel 131 is aligned with the second oil return hole 102 on the end cover 101. Next, the mounting section 116 of the dust seal 113 is inserted into the mounting groove 118 of the annular part 112, ensuring that its sealing part 114 is in good contact with the spindle 100. The dustproof plate 120 is installed at both ends of the support member 110 with bolts. Finally, the strong magnetic bolt 124 at the outlet end of the channel 131 is screwed in, completing the assembly of the entire device. After installation, it is necessary to check whether each component is installed in place, whether the connection is firm, and whether the seal is reliable.

[0048] When the spindle 100 is running, if an oil leak occurs, the leaked oil will flow along the surface of the spindle 100 to the oil collection area of ​​the support 110. Under the guidance of the guide surface 119, the oil flows smoothly into the oil reservoir 130. The oil first undergoes preliminary filtration through the first filter screen 122 to remove larger particulate impurities, and then enters the first oil return hole 123. The oil flows through the channel 131 to the second oil return hole 102. During this process, the strong magnetic bolt 124 adsorbs ferromagnetic metal debris in the oil. After entering the second oil return hole 102, the oil undergoes secondary fine filtration through the second filter screen 103 to further remove fine impurities. Finally, the clean oil flows back into the bearing cavity, realizing the recycling and reuse of the oil. This process ensures that the bearing continuously receives sufficient clean lubrication, while effectively preventing damage to the bearing from impurities and metal debris.

[0049] The oil guiding and collecting device of this utility model has a reasonable structure, good sealing performance, high filtration efficiency, and convenient maintenance. It can be widely used in the bearing sealing system of large equipment such as wind turbine generators, heavy machinery, and industrial gearboxes, effectively solving the problems of oil leakage and pollution, significantly improving the reliability and service life of equipment operation, and reducing maintenance costs and environmental risks.

[0050] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An oil guiding and collecting device, installed in a power generation device, the power generation device comprising a main shaft, bearings, and an end cover surrounding the outer periphery of the main shaft, the end cover being equipped with an oil seal, characterized in that, include: A support member is fixedly installed on the end cover and located at the bottom of the spindle. The support member has a dust seal that abuts against the outer peripheral wall of the spindle. The support member has a first oil return hole located between the dust seal and the oil seal. The end cover has a second oil return hole. The support member has a channel for connecting the first oil return hole and the second oil return hole. Leaked oil can flow back into the bearing from the first oil return hole, the channel, and the second oil return hole. A first filter screen is provided on the first oil return hole, and a second filter screen is provided in the second oil return hole. A strong magnetic bolt is screwed to the end of the channel away from the end cover.

2. The oil guiding and collecting device according to claim 1, characterized in that, The support member has an oil storage tank located between the dust seal and the oil seal, the first oil return hole is located in the oil storage tank, and the first filter screen is installed on the bottom wall of the oil storage tank.

3. The oil guiding and collecting device according to claim 2, characterized in that, The oil storage tank has an inclined guide surface on the side near the oil seal, and the guide surface is inclined downward in the direction away from the oil seal.

4. The oil guiding and collecting device according to claim 1, characterized in that, A pressure plate is installed on the outer periphery of the spindle. Dustproof plates are provided at both ends of the support member along the circumference of the spindle. The end of the pressure plate abuts against the dustproof plate. At the same time, the end of the dustproof plate abuts against the spindle and the shape of its end is adapted to the outer contour of the spindle.

5. The oil guiding and collecting device according to claim 1, characterized in that, The support member is provided with a first mounting part, and the end cover is provided with a second mounting part. The first mounting part and the second mounting part press against both sides of the oil seal along the axial direction of the main shaft.

6. The oil guiding and collecting device according to claim 1, characterized in that, A sealing ring and a sealing strip are provided between the support member and the end cap. The sealing ring is wrapped around the outer periphery of the second filter screen, and the sealing strip extends circumferentially along the main shaft. The sealing ring and the sealing strip are used to achieve a seal between the support member and the end cap.

7. The oil guiding and collecting device according to claim 1, characterized in that, The support member is provided with a mounting groove, the dust seal is provided with a mounting section that is inserted into the mounting groove, and the outer side of the mounting section is provided with a protruding anti-slip part.

8. The oil guiding and collecting device according to claim 1, characterized in that, The support member is provided with a connecting part, and the strong magnetic bolt is screwed onto the connecting part. The connecting part has a first connecting hole, through which the bolt can pass to achieve the connection between the support member and the end cap.

9. An oil guiding and collecting device according to claim 1, characterized in that, The support member has an annular portion that wraps around the outer peripheral wall of the main shaft, and the dust seal is installed on the annular portion.

10. An oil guiding and collecting device according to claim 7, characterized in that, The dust seal includes a sealing part, a waist part, and a mounting section. The sealing part abuts against the outer peripheral wall of the spindle, the mounting section is connected to the support member, and the waist part extends horizontally.

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