Ventilation cap special for speed reducer

Abstract

The utility model relates to the technical field of ventilation caps, and discloses a special ventilation cap for a speed reducer, which comprises a hollow cylinder, a first connecting column is fixedly connected to the left side of the bottom of the hollow cylinder, a sealing ring is fixedly connected to the bottom of the outer wall of the first connecting column, and a threaded groove is formed in the inner wall of the first connecting column. The left end of the bottom of the inner side of the hollow cylinder is fixedly connected with an anti-backflow pipe, the right side of the top of the hollow cylinder is fixedly connected with a second connecting column, the top of the second connecting column is rotationally connected with a cap, a plurality of air holes are formed in the periphery of the bottom of the cap at equal intervals, and a supporting mechanism is arranged on the outer wall of the hollow cylinder. According to the anti-backflow device, the sealing ring is tightly attached to the installation portion and is in threaded connection with the connector of the speed reducer in cooperation with the threaded groove, the anti-backflow pipe controls gas to flow in and out when pressure changes, impurities and oil are prevented from flowing back, and leakage of the oil in the speed reducer is effectively prevented, oil pollution is avoided, and the internal pressure is balanced.

Description

Technical Field

[0001] This utility model relates to the field of breathable cap technology, and in particular to a breathable cap for speed reducers. Background Technology

[0002] As a widely used mechanical transmission device, the speed reducer plays an indispensable role in many industrial fields and everyday equipment. Through the action of the speed reducer, various equipment can operate at appropriate speeds and torques, improving the stability and reliability of equipment operation, optimizing energy utilization efficiency, greatly expanding the application scenarios of power sources, reducing energy consumption and wear during equipment operation, and extending the overall service life of equipment.

[0003] The vent cap for speed reducers is a key component specifically designed for speed reducer systems. It is installed on the top or side of the speed reducer housing. When the speed reducer is running, the high-speed friction of the internal mechanical parts causes the oil temperature to rise, the oil to expand due to heat, and the decomposition of the lubricating oil to produce gas, resulting in a sharp increase in internal pressure. The vent cap's venting channel ensures that the internal gas can be discharged smoothly, while the filter component prevents the intrusion of external dust, impurities, and moisture. The sealing component ensures that no additional leakage occurs during normal air pressure balance, thus maintaining a stable working environment inside the speed reducer. Because the internal path of the general-purpose vent cap for speed reducers used in ore conveying systems is short and the space is small, the dusty working environment can easily cause the speed reducer vent cap to become clogged and leak oil, leading to high temperatures inside the speed reducer. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a special vent cap for speed reducers, which aims to improve the problem that the vent cap in the prior art has a short internal path and small space, and the dusty working environment makes it easy for the vent cap to become clogged and leak oil, which leads to high temperature inside the speed reducer.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a special vent cap for a speed reducer, comprising a hollow cylinder, a connecting column one fixedly connected to the bottom left side of the hollow cylinder, a sealing ring fixedly connected to the bottom of the outer wall of the connecting column one, a threaded groove formed on the inner wall of the connecting column one, an anti-backflow pipe fixedly connected to the bottom left end of the inner side of the hollow cylinder, a connecting column two fixedly connected to the top right side of the hollow cylinder, a cap rotatably connected to the top of the connecting column two, a plurality of vent holes equidistantly formed around the bottom of the cap, and a support mechanism provided on the outer wall of the hollow cylinder for supporting the hollow cylinder.

[0006] As a further description of the above technical solution:

[0007] The support mechanism includes a fixed ring, the inner side of which is fixedly connected to the outer wall of the hollow cylinder. Multiple rotating blocks are fixedly connected at equal intervals to the outer wall of the fixed ring. A connecting plate is rotatably connected to one side of each of the multiple rotating blocks. An adjusting plate is slidably connected to the outer wall of each of the multiple connecting plates. Multiple adjusting holes are equidistantly opened on the outer wall of each of the multiple adjusting plates. An adjusting bolt is rotatably connected to one side of each of the multiple connecting plates.

[0008] As a further description of the above technical solution:

[0009] A triangular fixing block is fixedly connected to the top right side of the connecting column one, and the top of the triangular fixing block is fixedly connected to the bottom of the hollow cylinder.

[0010] As a further description of the above technical solution:

[0011] The bottom of the sealing ring is provided with a sealing groove, and a sealing strip is slidably connected inside the sealing groove.

[0012] As a further description of the above technical solution:

[0013] Each of the adjusting bolts has a slidably connected washer on its outer wall, and one side of each washer is in contact with one side of the corresponding adjusting plate.

[0014] As a further description of the above technical solution:

[0015] Each of the multiple adjusting plates has a limiting groove on both sides inside, and each of the multiple connecting plates has a limiting block fixedly connected to the bottom left and right sides. Each of the multiple limiting blocks is slidably connected to the inside of the corresponding limiting groove.

[0016] As a further description of the above technical solution:

[0017] Each of the adjustment plates has a rotating plate rotatably connected to its bottom end, and each of the rotating plates has a number of rubber pads fixedly connected at equal intervals to its bottom.

[0018] As a further description of the above technical solution:

[0019] Multiple adjusting bolts pass through corresponding adjusting holes, and the size of the adjusting bolts matches that of the adjusting holes.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the sealing ring fits tightly against the installation part and is connected to the reducer interface by threaded groove, which ensures a firm and sealed installation. The anti-backflow pipe controls the gas in and out when the pressure changes, preventing impurities and oil from flowing back. The vent hole ensures air permeability while preventing oil from being carried out, thus effectively preventing oil leakage inside the reducer, avoiding oil contamination, and balancing the internal pressure.

[0022] 2. In this utility model, by rotating the connecting plate to initially adapt it to the mounting surface, then sliding the adjusting plate and aligning the adjusting hole with the adjusting bolt, and tightening the adjusting bolt to fix the position of the adjusting plate, the support mechanism can be made to fit tightly against mounting surfaces of different shapes and positions, providing stable and reliable support for the ventilator cap and ensuring that the ventilator cap is installed securely. Attached Figure Description

[0023] Figure 1 This is a perspective view of a special vent cap for a speed reducer proposed in this utility model;

[0024] Figure 2 This is a structural exploded view of a special vent cap for a speed reducer proposed in this utility model;

[0025] Figure 3 This is a structural cross-sectional view of a special vent cap for a speed reducer proposed in this utility model;

[0026] Figure 4 for Figure 3 Enlarged view of point A in the image;

[0027] Figure 5 This is a cross-sectional view of the support mechanism for a special vent cap for a speed reducer proposed in this utility model.

[0028] Legend:

[0029] 1. Hollow cylinder; 2. Support mechanism; 201. Fixing ring; 202. Rotating block; 203. Connecting plate; 204. Adjusting plate; 205. Adjusting hole; 206. Adjusting bolt; 3. Connecting column one; 4. Sealing ring; 5. Threaded groove; 6. Anti-backflow pipe; 7. Connecting column two; 8. Cap; 9. Vent hole; 10. Triangular fixing block; 11. Sealing groove; 12. Sealing strip; 13. Gasket; 14. Limiting groove; 15. Limiting block; 16. Rotating plate; 17. Rubber pad. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a special vent cap for a speed reducer, comprising a hollow cylinder 1. A connecting post 3 is fixedly connected to the bottom left side of the hollow cylinder 1 for connection with the speed reducer mounting interface. A sealing ring 4 is fixedly connected to the bottom outer wall of the connecting post 3 to prevent oil leakage from the connection point inside the speed reducer. A threaded groove 5 is provided on the inner wall of the connecting post 3 to facilitate threaded connection with the speed reducer mounting interface and ensure a firm connection. A backflow prevention pipe 6 is fixedly connected to the bottom left end of the inner side of the hollow cylinder 1 to prevent oil from flowing back inside the speed reducer due to pressure changes. A connecting post 7 is fixedly connected to the top right side of the hollow cylinder 1 to provide connection support for the cap 8. A cap 8 is rotatably connected to the top of the connecting column 2 7, which can protect the top of the vent cap. Multiple vent holes 9 are equidistantly opened around the bottom of the cap 8 to balance the air pressure inside and outside the reducer. A support mechanism 2 is provided on the outer wall of the hollow cylinder 1 to provide stable support for the hollow cylinder 1 and ensure the stable installation of the vent cap. The support mechanism 2 is used to support the hollow cylinder 1 so that the vent cap remains stable during operation. A triangular fixing block 10 is fixedly connected to the top right side of the connecting column 1 3 to enhance the connection stability between the connecting column 1 3 and the hollow cylinder 1. The top of the triangular fixing block 10 is fixedly connected to the bottom of the hollow cylinder 1 to further strengthen the overall structure of the vent cap.

[0032] Specifically, the sealing ring 4 fits tightly against the installation location, preventing external impurities from entering and effectively preventing oil leakage from the installation point. The threaded groove 5 on the inner wall of the connecting column 3 is used for threaded connection with the installation interface of the reducer, ensuring the firmness and sealing of the installation. During the operation of the reducer, internal pressure changes will occur. When the pressure rises, internal gas can enter the hollow cylinder 1 through the anti-backflow pipe 6 and then be discharged. When the reducer stops working and the internal pressure drops, the anti-backflow pipe 6 can effectively prevent impurities carried by external air and any possible oil from flowing back into the reducer, avoiding oil contamination and leakage risks. The top right side of the hollow cylinder 1... Connecting column 2 7 is rotatably connected to cap 8. Multiple vent holes 9 are equidistantly opened around the bottom of cap 8. While ensuring good ventilation performance, it can also prevent large particles of impurities from entering. When the internal pressure of the reducer increases, the gas rises from the hollow cylinder 1 and is discharged through the vent holes 9 to balance the internal pressure. Since the vent holes 9 are small and evenly distributed, they can effectively prevent oil from being carried out due to pressure fluctuations, thereby achieving the function of preventing oil leakage. This strengthens the connection stability between connecting column 1 3 and hollow cylinder 1. When the reducer vibrates during operation or is subjected to external impact, it can effectively prevent loosening or displacement between connecting column 1 3 and hollow cylinder 1, ensuring the overall structural stability of the vent cap.

[0033] Reference Figure 1 and Figure 5The support mechanism 2 includes a fixing ring 201, which securely connects the support mechanism 2 to the hollow cylinder 1. The inner side of the fixing ring 201 is fixedly connected to the outer wall of the hollow cylinder 1, enabling stable installation of the support mechanism 2 on the hollow cylinder 1. Multiple rotating blocks 202 are equidistantly fixedly connected to the outer wall of the fixing ring 201, providing rotational support points for the connecting plate 203. Each of the multiple rotating blocks 202 has a connecting plate 203 rotatably connected to one side, allowing for angle adjustment to adapt to different installation scenarios. Adjusting plates 204 are slidably connected to the outer walls of the multiple connecting plates 203, allowing them to slide along the connecting plates 203. To change the length of the support, multiple adjusting plates 204 have multiple adjusting holes 205 equidistantly opened on their outer walls, providing different fixing positions for the adjusting bolts 206 to achieve fine adjustment. Each side of multiple connecting plates 203 is rotatably connected to an adjusting bolt 206 for fixing the adjusting plate 204 in a suitable position. Multiple adjusting bolts 206 pass through the corresponding adjusting holes 205 to ensure that the adjusting bolts 206 can effectively fix the adjusting plate 204. The size of the adjusting bolts 206 and the adjusting holes 205 are matched to ensure that the adjusting bolts 206 and the adjusting holes 205 fit tightly, making the adjustment and fixing more reliable.

[0034] Specifically, when installing the vent cap, first rotate the connecting plate 203 to initially adapt it to the mounting surface. Then, slide the adjusting plate 204 along the outer wall of the connecting plate 203, align the appropriate adjusting hole 205 on the adjusting plate 204 with the adjusting bolt 206 on the connecting plate 203, and then rotate the adjusting bolt 206 to pass through the adjusting hole 205 and tighten it, thereby fixing the adjusting plate 204 in a suitable position. Through the dual adjustment of the angle of the connecting plate 203 and the position of the adjusting plate 204, the support mechanism 2 can closely fit the mounting surface of different shapes and positions, providing stable and reliable support for the vent cap, ensuring that the adjusting bolt 206 can accurately pass through the adjusting hole 205, and accurately locking the position of the adjusting plate 204.

[0035] Reference Figure 1 , Figure 2 and Figure 5The bottom of the sealing ring 4 has a sealing groove 11, providing installation space for the sealing strip 12. The sealing strip 12 is slidably connected inside the sealing groove 11, which can further enhance the sealing effect of the sealing ring 4 and prevent oil leakage. The outer walls of the multiple adjusting bolts 206 are slidably connected with gaskets 13, which can increase the contact area between the adjusting bolts 206 and the adjusting plate 204. One side of each gasket 13 is in contact with one side of the corresponding adjusting plate 204, which can play a role in dispersing pressure and preventing damage to the adjusting plate 204. Limiting grooves 14 are opened on both sides of the interior of the multiple adjusting plates 204, which are limit blocks. 15 provides a sliding track, and the bottom left and right sides of multiple connecting plates 203 are fixedly connected to limit blocks 15, which cooperate with the limit grooves 14 to limit the sliding range of the adjustment plate 204. The multiple limit blocks 15 are respectively slidably connected to the interior of the corresponding limit grooves 14 to ensure that the adjustment plate 204 slides stably and will not detach from the connecting plate 203. The bottom of multiple adjustment plates 204 is rotatably connected to a rotating plate 16, which can flexibly adjust the angle to adapt to different mounting surfaces. The bottom of multiple rotating plates 16 is fixedly connected to multiple rubber pads 17 at equal intervals, which can increase the friction with the mounting surface and play a role in anti-slip and buffering and shock absorption.

[0036] Specifically, the sealing strip 12 can fill gaps according to the slight undulations and deformations of the mounting surface, further preventing the oil inside the reducer from seeping out from the contact point between the sealing ring 4 and the mounting surface. The gasket 13 increases the contact area between the adjusting bolt 206 and the adjusting plate 204, dispersing the pressure generated when the adjusting bolt 206 is tightened, and preventing the adjusting plate 204 from being damaged due to excessive local pressure. The limiting groove 14 and the limiting block 15 form a limiting structure, limiting the sliding range of the adjusting plate 204 on the outer wall of the connecting plate 203, preventing the adjusting plate 204 from sliding excessively and detaching from the connecting plate 203, and ensuring the controllability of the adjustment process. The rotating plate 16 can rotate flexibly, allowing the rubber pad 17 to better adapt to different shapes of mounting surfaces and enhance the fit with the mounting surface.

[0037] Working principle: When the vent cap is installed on the reducer, the sealing ring 4 fits tightly against the installation part, preventing external impurities from entering while effectively preventing oil leakage from the reducer's interior. The threaded groove 5 on the inner wall of the connecting column 3 is used for threaded connection with the reducer's installation interface, ensuring the installation's firmness and sealing. During the reducer's operation, internal pressure changes occur. When the pressure increases, internal gas can enter the hollow cylinder 1 through the anti-backflow pipe 6 and then be discharged. When the reducer stops working and the internal pressure decreases, the anti-backflow pipe 6 effectively prevents external gas leakage. Impurities carried by the gas and any oil that may be present flow back into the reducer, preventing oil contamination and leakage risks. The connecting column 2 7 on the top right side of the hollow cylinder 1 is rotatably connected to the cap 8. Multiple vent holes 9 are equidistantly opened around the bottom of the cap 8, which ensure good ventilation performance while preventing larger particles of impurities from entering. When the internal pressure of the reducer increases, the gas rises from the hollow cylinder 1 and is discharged through the vent holes 9, balancing the internal pressure. Because the vent holes 9 are small and evenly distributed, they can effectively prevent oil from being carried out due to pressure fluctuations, thus achieving the function of preventing oil leakage.

[0038] Furthermore, when it is necessary to install the ventilator cap, the connecting plate 203 can be rotated first to make it initially fit the mounting surface. Then, the adjusting plate 204 can be slid along the outer wall of the connecting plate 203, and the appropriate adjusting hole 205 on the adjusting plate 204 can be aligned with the adjusting bolt 206 on the connecting plate 203. Then, the adjusting bolt 206 can be rotated to pass through the adjusting hole 205 and tightened, thereby fixing the adjusting plate 204 in a suitable position. Through the dual adjustment of the angle of the connecting plate 203 and the position of the adjusting plate 204, the support mechanism 2 can closely fit the mounting surface of different shapes and positions, providing stable and reliable support for the ventilator cap.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A special air-permeable cap for a speed reducer, comprising a hollow cylinder (1), characterized in that: The bottom left side of the hollow cylinder (1) is fixedly connected with a connecting column one (3), the outer wall bottom of the connecting column one (3) is fixedly connected with a sealing ring (4), the inner wall of the connecting column one (3) is provided with a threaded groove (5), the inner bottom left end of the hollow cylinder (1) is fixedly connected with an anti-backflow pipe (6), the top right side of the hollow cylinder (1) is fixedly connected with a connecting column two (7), the top of the connecting column two (7) is rotatably connected with a cap (8), a plurality of air holes (9) are equidistantly formed in the bottom of the cap (8), and the outer wall of the hollow cylinder (1) is provided with a supporting mechanism (2), which is used for supporting the hollow cylinder (1).

2. The air-permeable cap for a speed reducer according to claim 1, characterized by: The supporting mechanism (2) comprises a fixed ring (201), the inner side of the fixed ring (201) is fixedly connected to the outer wall of the hollow cylinder (1), a plurality of rotating blocks (202) are equidistantly fixedly connected to the outer wall of the fixed ring (201), one side of each of the plurality of rotating blocks (202) is rotatably connected with a connecting plate (203), the outer wall of each of the plurality of connecting plates (203) is slidably connected with an adjusting plate (204), a plurality of adjusting holes (205) are equidistantly formed in the outer wall of each of the plurality of adjusting plates (204), and one side of each of the plurality of connecting plates (203) is rotatably connected with an adjusting bolt (206).

3. The air-permeable cap for a speed reducer according to claim 1, characterized by: The right top of the connecting column one (3) is fixedly connected with a triangular fixed block (10), and the top of the triangular fixed block (10) is fixedly connected to the bottom of the hollow cylinder (1).

4. The air-permeable cap for a speed reducer according to claim 1, wherein: The bottom of the sealing ring (4) is provided with a sealing groove (11), and the inner side of the sealing groove (11) is slidably connected with a sealing strip (12).

5. The air-permeable cap for a speed reducer according to claim 2, characterized by: The outer wall of each of the plurality of adjusting bolts (206) is slidably connected with a gasket (13), and one side of each of the plurality of gaskets (13) is attached to one side of the corresponding adjusting plate (204).

6. A vented cap for a speed reducer according to claim 2, characterized in that: The inner sides of the plurality of adjusting plates (204) are both provided with limiting grooves (14), and the left and right sides of the bottom of each of the plurality of connecting plates (203) are fixedly connected with limiting blocks (15), and the plurality of limiting blocks (15) are respectively slidably connected with the inner sides of the corresponding limiting grooves (14).

7. The air-permeable cap for a speed reducer according to claim 2, characterized by: The bottom end of each of the plurality of adjusting plates (204) is rotatably connected with a rotating plate (16), and the bottom of each of the plurality of rotating plates (16) is equidistantly fixedly connected with a plurality of rubber pads (17).

8. The air-permeable cap for a speed reducer according to claim 2, characterized by: The plurality of adjusting bolts (206) pass through the corresponding adjusting holes (205), and the size of the adjusting bolt (206) matches the size of the adjusting hole (205).

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