Gearbox internal and external pressure balance zero oil leakage ventilation device
By designing a C-type air filter and oil accumulation box combined with a wool cotton breathable device in the gear box, the problem of oil mist leakage when the gear box rotates at high speed is solved, and the effective removal and return of oil mist is achieved, ensuring the zero leakage effect.
Patent Information
- Application Number
- CN202421949209.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-08-13
AI Technical Summary
When the gearbox rotates at high speed, the temperature increases, and the lubricating oil splashes everywhere. The existing breathable devices have the problem of oil mist leakage, and some solutions are complex and costly.
A pressure balanced zero oil leakage breathable device inside and outside the gear box is designed, using a C-type air filter and a ventilator, combined with an oil accumulation box and wool cotton, effectively remove the oil mist through multiple separations and adsorption, and return to the bearing box through the hose.
It achieves zero leakage of oil mist in the gearbox, has a simple structure and reliable performance, and avoids pollution of oil mist on the human body and the environment.
Smart Images
Figure CN222798091U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of gear boxes, in particular to a zero-oil-leakage ventilating device for a gear box with balanced internal and external pressures. Background Art
[0002] When the gearbox rotates at high speed, the temperature inside the box rises, causing the box to be in a slightly positive pressure state. The gear lubricating oil splashes everywhere under the action of centrifugal force and is exhausted through the exhaust holes on the box. An exhaust device is installed on the exhaust hole, which not only has the exhaust function, but also prevents oil mist from leaking out.
[0003] At present, there are defects in the design of the breathable cap, and the oil removal is generally not clean, accompanied by a small amount of oil mist leakage, some of which falls on the equipment and some of which is suspended in the air, which is harmful to health and pollutes the environment. In addition, some manufacturers install oil mist exhaust fans at the top of the exhaust hole, which has a better oil removal effect, but the system is more complicated, costly, and requires additional power consumption. For this reason, this application proposes a gearbox internal and external pressure balance zero leakage oil breathable device. Utility Model Content
[0004] In order to solve the problems raised in the above-mentioned background technology, the utility model provides the following technical solutions: a gear box internal and external pressure balanced zero oil leakage ventilation device, including a C-type air filter and a ventilation pipe, the C-type air filter is fixedly installed at the top of the ventilation pipe, and an oil accumulation box is fixedly installed at the top of the side wall of the ventilation pipe, the oil accumulation box covers the outside of the C-type air filter, and the oil accumulation box is filled with wool cotton. A cover plate is arranged on the top of the oil accumulation box, a through hole is opened in the middle position of the top of the cover plate, and the through hole on the cover plate is sleeved on the C-type air filter, and a filter head connected with the interior of the oil accumulation box is fixedly installed at the bottom of the oil accumulation box, and a hose is fixedly connected to the end of the filter head located outside the oil accumulation box, and the end of the hose away from the filter head is fixedly connected to the side wall of the ventilation pipe and connected with the interior of the oil accumulation box.
[0005] Furthermore, a cross-shaped pressure plate is provided on the top of the cover and above the opening, and the four ends of the pressure plate are evenly and fixedly connected around the opening at the top of the cover. When the cover is located on the top of the oil storage box, the bottom of the pressure plate is against the top of the C-type air filter.
[0006] Furthermore, a fixing ring is fixedly installed on the outer wall of the oil accumulation box, four through first holes are evenly opened on the top of the fixing ring, four through second holes are evenly opened at the edge of the top of the cover plate, the four second through holes on the cover plate are respectively aligned with the four first through holes on the fixing ring, and bolts are inserted through the corresponding first through holes and second through holes.
[0007] Furthermore, there is a distance between the inner wall of the through hole and the outer wall of the C-type air filter.
[0008] Furthermore, a filter screen is provided at the opening where the filter head communicates with the oil storage box.
[0009] Furthermore, the hose is made of transparent rubber material.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] A C-type air filter is installed on the top of the ventilation pipe to complete the first separation of oil mist, and then the airflow enters the oil accumulation box. When the airflow passes through the wool cotton in the oil accumulation box, the wool cotton will fully absorb the oil mist to achieve the oil-gas separation effect, thereby realizing the second separation of oil mist. The separated oil mist is collected in the oil accumulation box and flows back to the bearing box through the hose. This structure has the advantages of simple structure and reliable performance, and can achieve zero leakage of oil mist in the gear box. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0013] Figure 1 It is a schematic diagram of the overall structure of a partial section of the utility model;
[0014] Figure 2 It is a top view structural diagram of the connection between the cover plate and the pressing plate of the utility model;
[0015] Figure 3 It is an enlarged structural schematic diagram of A of the utility model;
[0016] Figure 4 This is a schematic diagram of the structure of the filter head of the utility model;
[0017] In the figure: 1. C-type air filter; 2. cover plate; 3. wool cotton; 4. oil accumulation box; 5. hose; 6. ventilation pipe; 7. opening; 8. pressure plate; 9. fixing ring; 10. bolt; 11. filter head; 12. filter screen. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0019] Depend on Figure 1-4It is given that the utility model includes a C-type air filter 1 and a ventilation pipe 6, the C-type air filter 1 is fixedly installed on the top of the ventilation pipe 6, an oil accumulation box 4 is fixedly installed on the top of the side wall of the ventilation pipe 6, the oil accumulation box 4 covers the outside of the C-type air filter 1, and the oil accumulation box 4 is filled with wool cotton 3. A cover plate 2 is arranged on the top of the oil accumulation box 4, a through hole 7 is opened at the middle position of the top of the cover plate 2, and the through hole 7 on the cover plate 2 is sleeved on the C-type air filter 1, and a filter head 11 connected with the interior thereof is fixedly installed on the bottom of the oil accumulation box 4, a hose 5 is fixedly connected to one end of the filter head 11 located outside the oil accumulation box 4, and one end of the hose 5 away from the filter head 11 is fixedly connected to the side wall of the ventilation pipe 6 and connected with the interior thereof, and the separated oil mist is collected in the oil accumulation box 4 and flows back to the bearing box through the hose 5.
[0020] like Figure 1 and Figure 2 As shown, a cross-shaped pressure plate 8 is provided on the top of the cover 2 and above the opening 7. The four ends of the pressure plate 8 are evenly and fixedly connected to the four sides of the opening 7 at the top of the cover 2. When the cover 2 is located on the top of the oil accumulation box 4, the bottom of the pressure plate 8 is against the top of the C-type air filter 1. The C-type air filter 1 can be stably installed on the top of the ventilation pipe 6 through the pressure plate 8.
[0021] like Figure 1 and Figure 3 As shown, a fixing ring 9 is fixedly installed on the outer wall of the oil accumulation box 4, four first through holes are evenly opened on the top of the fixing ring 9, and four second through holes are evenly opened at the edge of the top of the cover plate 2. The four second through holes on the cover plate 2 are respectively aligned with the four first through holes on the fixing ring 9, and bolts 10 are inserted through the corresponding first through holes and second through holes. The cover plate 2 can be stably installed on the top of the oil accumulation box 4 through the bolts 10.
[0022] like Figure 1 and Figure 2 As shown, there is a distance between the inner wall of the through hole 7 and the outer wall of the C-type air filter 1, so that the airflow entering the oil storage box 4 can be discharged normally.
[0023] like Figure 1 and Figure 4 As shown, a filter screen 12 is provided at the opening where the filter head 11 communicates with the oil storage box 4 , and the filter screen 12 can prevent the wool cotton 3 in the oil storage box 4 from entering the hose 5 through the filter head 11 .
[0024] like Figure 1 As shown, the hose 5 is made of transparent rubber material, and an oil drainage filter head 11 is designed at the bottom of the oil accumulation box 4. The hose 5 made of transparent rubber material is connected to the ventilation pipe 6 to timely discharge the lubricating oil accumulated in the oil accumulation box 4. The transparent hose 5 is easy to observe.
[0025] Working principle: When the gas in the gear box flows to the C-type air filter 1, the first oil mist separation is completed, and then the second adsorption separation is completed when the gas passes through the wool cotton 3 in the oil storage box 4, and then it is discharged into the air. The separated oil mist is collected in the oil storage box 4 and flows back to the bearing box through the hose 5.
[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A gearbox internal and external pressure balanced zero oil leakage ventilation device, comprising a C-type air filter (1) and a vent pipe (6), characterized in that: The C-type air filter (1) is fixedly mounted on the top of the ventilation pipe (6), and an oil accumulation box (4) is fixedly mounted on the top of the side wall of the ventilation pipe (6). The oil accumulation box (4) covers the outside of the C-type air filter (1), and is filled with wool (3). A cover plate (2) is arranged on the top of the oil accumulation box (4), and a through hole (7) is opened at the middle position of the top of the cover plate (2), and the through hole (7) on the cover plate (2) is sleeved on the C-type air filter (1). A filter head (11) connected to the inside of the oil accumulation box (4) is fixedly mounted on the bottom of the oil accumulation box (4), and a hose (5) is fixedly connected to one end of the filter head (11) located outside the oil accumulation box (4), and one end of the hose (5) away from the filter head (11) is fixedly connected to the side wall of the ventilation pipe (6) and connected to the inside of the ventilation pipe (6).
2. A gearbox internal and external pressure balance zero oil leakage breathable device according to claim 1, characterized in that: A cross-shaped pressing plate (8) is arranged at the top of the cover plate (2) and above the opening (7); the four ends of the pressing plate (8) are evenly and fixedly connected to the four sides of the opening (7) at the top of the cover plate (2); when the cover plate (2) is located at the top of the oil accumulation box (4), the bottom of the pressing plate (8) abuts against the top of the C-type air filter (1).
3. The gear box internal and external pressure balance zero oil leakage breathable device according to claim 1, characterized in that: A fixing ring (9) is fixedly mounted on the outer wall of the oil accumulation box (4), and four through first through holes are evenly opened on the top of the fixing ring (9). Four through second through holes are evenly opened at the edge of the top of the cover plate (2). The four second through holes on the cover plate (2) are respectively aligned with the four first through holes on the fixing ring (9), and bolts (10) are inserted and penetrated between the corresponding first through holes and the second through holes.
4. The gear box internal and external pressure balance zero oil leakage breathable device according to claim 1, characterized in that: There is a distance between the inner wall of the through opening (7) and the outer wall of the C-type air filter (1).
5. The gear box internal and external pressure balance zero oil leakage breathable device according to claim 1, characterized in that: A filter screen (12) is provided at the opening where the filter head (11) communicates with the oil storage box (4).
6. The gear box internal and external pressure balance zero oil leakage breathable device according to claim 1, characterized in that: The hose (5) is made of transparent rubber material.