A dual-phase lubrication system for a gearbox

Abstract

The present invention relates to the technical field of gearbox lubrication, and discloses a two-phase lubrication system for a gearbox. Through the two-phase oil sump system, the input oil mist in the gearbox enters the cavity of the gearbox, fills the free space, forms a slightly positive pressure, and outwardly prevents the entry of external humid air into the gearbox. In the present invention, the liquid lubricating oil in the two-phase oil sump system is dynamically updated (automatically). The oil mist enters the cavity of the gearbox, fills the original free space (above the liquid oil), forms a slightly positive pressure, outwardly resists the entry of external humid air into the lubrication chamber, and the oil mist itself is a lubricating medium.

Description

Technical Field

[0001] The present invention relates to the technical field of gearbox lubrication, and specifically to a two-phase lubrication system for a gearbox. Background Art

[0002] In current industrial applications, splash lubrication using an oil sump is adopted for the lubrication of medium and small-sized gearboxes. The effect is poor, the oil is not changed for a long time, the oil quality is poor, the heat dissipation effect is poor. Moreover, when the gearbox is working and stopped, it is affected by the alternating heat and cold, and the change of the pressure inside the box makes it easy for wet air to enter, resulting in water in the lubricating oil. The gears, bearings and the housing above the liquid level are exposed to the air and are prone to corrosion. If the lubricating oil cannot be replaced regularly, the quality of the lubricating oil will be even worse, etc.

[0003] Based on this, we have proposed a two-phase lubrication system for a gearbox, hoping to solve the deficiencies in the prior art. Summary of the Invention

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the present invention provides a two-phase lubrication system for a gearbox.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A two-phase lubrication system for a gearbox. The input oil mist in the gearbox is filled into the cavity of the gearbox through a two-phase oil sump system, and the oil mist fills the free space in the cavity of the gearbox to form a slightly positive pressure, which outwardly prevents the outside wet air from entering the gearbox;

[0009] The two-phase oil sump system and the lubricating oil in the gearbox are circulated and updated. The two-phase oil sump system is connected to the top of the gearbox through a first pipeline;

[0010] The two-phase oil sump system is connected to the right side of the bottom of the gearbox through a second pipeline;

[0011] The two-phase oil sump system is connected to the left side of the bottom of the gearbox through a third pipeline, and an oil drain valve is provided at the connection of the third pipeline and the gearbox.

[0012] As a further technical solution: A plurality of gearboxes are provided, each gearbox is connected to the two-phase oil sump system, one or more sets of meshing gears are provided inside the gearbox, an input shaft is provided at the left end of the gearbox, and an output shaft is provided at the right end of the gearbox.

[0013] As a further technical solution, the two-phase oil sump system includes an oil storage tank, and the oil storage tank is sequentially connected to a filter and a heating tank through a third pipeline, and the heating tank is arranged above the filter;

[0014] The oil storage tank is connected to the oil mist lubricator through the first pipeline.

[0015] As a further technical solution, an oil passage is arranged in the filter from top to bottom.

[0016] An oil inlet, a first filter screen, a magnetic filter core, a second filter screen, and an oil outlet are sequentially arranged in the oil passage from top to bottom.

[0017] As a further technical solution: The oil inlet and the oil outlet are respectively connected to the third pipeline.

[0018] As a further technical solution: The outer part of the magnetic filter core is a ceramic filter body, and a magnet bar is arranged inside.

[0019] As a further technical solution, a spiral tube is arranged in the heating box.

[0020] The top and bottom of the spiral tube are respectively connected to the third pipeline.

[0021] (III) Beneficial effects

[0022] Compared with the prior art, the present invention provides a two-phase lubrication system for a gearbox, having the following beneficial effects:

[0023] In the present invention, the liquid lubricating oil in the two-phase oil pool system is dynamically updated (automatically). The oil mist enters the gearbox cavity and fills the original free space (above the liquid oil), forming a slightly positive pressure, which outwardly resists the entry of external humid air into the lubrication chamber, and the oil mist itself is a lubricating medium. Such two-phase composite lubrication solves the following problems:

[0024] 1. The liquid lubricating oil in the oil pool can continuously circulate out for filtration and update, improving the service life of the lubricating oil.

[0025] 2. The oil mist can supplement lubrication to the working surfaces that are not lubricated by splashing oil, improving the lubrication effect.

[0026] 3. The oil mist lubricates the bearings well.

[0027] 4. It can resist external humid air, ensuring that the lubricating oil in the gearbox does not contain moisture, avoiding the decline in the quality of the lubricating oil and the corrosion of metal by moisture.

[0028] 5. The oil mist resists the entry of external air, avoiding the corrosion of metal by oxygen.

[0029] 6. When the gear is stopped, the oil mist continuously enters, and at the same time, the problems of maintenance and protection during machine shutdown are solved, avoiding the problems in items 4 and 5 above.

[0030] 7. The oil mist entering the gearbox can be oil mist at a relatively low temperature, which has a good cooling effect on gears and bearings. At the same time, it will also condense the lubricating oil transported by the oil mist to supplement the consumption of lubricating oil;

[0031] 8. The lubrication effect of oil mist is better than that of liquid oil;

[0032] This two-phase lubrication does not make any changes to the original gearbox structure and lubrication mode, which is convenient, fast and has remarkable effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is the overall structure diagram of the present invention;

[0034] Figure 2 It is the structure diagram of the two-phase oil sump system of the present invention;

[0035] Figure 3 It is the structure diagram of the filter of the present invention;

[0036] Figure 4 It is the structure diagram of the heating box of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Please refer to Figures 1 - 4 : Embodiment 1

[0039] A two-phase lubrication system for a gearbox. The input oil mist in the gearbox 6 is passed through the two-phase oil sump system 1. The oil mist enters the cavity of the gearbox 6 and fills the free space to form a slightly positive pressure, which outwardly prevents the entry of external humid air into the gearbox 6; the liquid lubricating oil in the two-phase oil sump system 1 is dynamically updated (automatically). The oil mist enters the cavity of the gearbox and fills the original free space (above the liquid oil) to form a slightly positive pressure, which outwardly resists the entry of external humid air into the lubrication chamber, and the oil mist itself is a lubricating medium.

[0040] The lubricating oil in the bi-phase oil sump system 1 and the gearbox 6 is circulated and updated. In this way, the lubricating oil sump in the gearbox 6 after working for a period of time can be continuously guided back to the bi-phase oil sump system 1 for treatment. At the same time, new lubricating oil is introduced from the bi-phase oil sump system 1 into the gearbox 6. In this cycle, the service life of the lubricating oil is greatly improved. At the same time, it can better ensure the lubrication effect of the gears, extend the service life of the gearbox 6, reduce the wear of the gears. The bi-phase oil sump system 1 is connected to the top of the gearbox 6 through the first pipeline 8. Multiple gearboxes 6 can be provided. The first pipeline 8 extends from the bi-phase oil sump system 1 and is respectively connected to the tops and bottoms of multiple gearboxes 6;

[0041] The bi-phase oil sump system 1 is connected to the right side of the bottom of the gearbox 6 through the second pipeline 3. Multiple gearboxes 6 can be provided. The second pipeline 3 extends from the bi-phase oil sump system 1 and is respectively connected to the right sides of the bottoms of multiple gearboxes 6;

[0042] The bi-phase oil sump system 1 is connected to the left side of the bottom of the gearbox 6 through the third pipeline 2. An oil drain valve 5 is provided at the connection of the third pipeline 2 and the gearbox 6. Multiple gearboxes 6 can be provided. The third pipeline 2 extends from the bi-phase oil sump system 1 and is respectively connected to the left sides of the bottoms of multiple gearboxes 6. The oil drain valve 5 can control the lubricating oil in the gearbox 6 after working for a period of time to be drained and returned to the bi-phase oil sump system 1 for treatment.

[0043] Multiple gearboxes 6 are provided. Each gearbox 6 is connected to the bi-phase oil sump system 1. One or more sets of meshing gears 9 are provided in the gearbox 6. An input shaft 4 is provided at the left end of the gearbox 6, and an output shaft 7 is provided at the right end of the gearbox 6. The input shaft 4 is the shaft through which power enters the gearbox 6. Power enters the gearbox 6 from the driving device through the input shaft 4, and then the input gear on the shaft drives the input gear to transmit power to the output gear to drive the output shaft 7 to rotate, so as to output power and realize the speed change function.

[0044] The bi-phase oil sump system 1 includes an oil storage tank 11. The oil storage tank 11 is sequentially connected to a filter 15 and a heating tank 14 through the third pipeline 2. The heating tank 14 is arranged above the filter 15. The returned lubricating oil is heated and filtered in sequence through the filter 15. When heating, the temperature of the lubricating oil is increased, the viscosity of the lubricating oil is reduced, and the fluidity of the lubricating oil is improved. Then filtration is carried out to facilitate the rapid filtration of the lubricating oil and improve the filtration efficiency, avoiding slow filtration efficiency due to too high viscosity of the lubricating oil;

[0045] The oil storage tank 11 is connected to an oil mist generator 12 through the first pipeline 8. The lubricating oil is introduced into the oil mist generator 12 to turn the lubricating oil into an oil mist, and is input into the gearbox 6 through the first pipeline 8. The oil mist can supplement lubrication to the working surfaces that are not lubricated by splashing oil, and the oil mist lubricates the bearings well, so as to achieve a bi-phase lubrication effect.

[0046] A downward oil passage 157 is provided in the filter 15. The oil passage 157 is an oil passage 157 with multiple bends and serves as a flow channel for lubricating oil. After the lubricating oil passes through the oil passage 157, it is filtered in sequence.

[0047] An oil inlet 154, a first filter screen 153, a magnetic filter core 155, a second filter screen 152, and an oil outlet 151 are sequentially arranged in the oil passage 157 from top to bottom.

[0048] The mesh numbers of the first filter screen 153 and the second filter screen 152 can be selected according to actual needs. The combination of the two improves the filtering effect, thereby ensuring the treatment quality of the lubricating oil, facilitating the subsequent renewal of the lubricating oil, increasing the number of times the lubricating oil can be recycled, and saving production costs.

[0049] The oil inlet 154 and the oil outlet 151 are respectively connected to the third pipeline 2.

[0050] The outer part of the magnetic filter core 155 is a ceramic filter body, and a magnet bar 156 is arranged inside. The lubricating oil is filtered through the combination of the ceramic filter body, the first filter screen 153, and the second filter screen 152, and the filtering efficiency is greatly improved. At the same time, the magnet bar 156 arranged in the magnetic filter core 155 can adsorb iron powder in the lubricating oil, greatly improving the efficiency of removing impurities in the lubricating oil, cleaning the used lubricating oil in the gearbox, so that the treated lubricating oil can meet the requirements for reuse, providing support for the recycled lubricating oil, and facilitating the timely renewal of the lubricating oil in the gearbox.

[0051] A spiral pipe 141 is provided in the heating box 14. By arranging the spiral pipe 141 in the heating box 14, after the lubricating oil passes through the spiral pipe 141, the temperature of the lubricating oil is significantly increased, the viscosity is reduced, and the fluidity is greatly improved. Subsequently, the filtering process can be carried out more efficiently, avoiding the situation that due to the too high viscosity of the lubricating oil, it is easy to adhere to the filter 15, thereby blocking the subsequent filtering process of the lubricating oil and reducing the filtering efficiency.

[0052] The top and bottom of the spiral pipe 141 are respectively connected to the third pipeline 2.

[0053] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A two-phase lubrication system for a gearbox, characterized in that, The input oil mist in the gearbox (6) is passed through the two-phase oil sump system (1). The oil mist enters the cavity of the gearbox (6) and fills the free space to form a slightly positive pressure, which outwardly prevents the entry of external humid air into the gearbox (6). The lubricating oil in the two-phase oil sump system (1) and the gearbox (6) is circulated and updated. The two-phase oil sump system (1) is connected to the top of the gearbox (6) through the first pipeline (8). The two-phase oil sump system (1) is connected to the right side of the bottom of the gearbox (6) through the second pipeline (3). The two-phase oil sump system (1) is connected to the left side of the bottom of the gearbox (6) through the third pipeline (2). A drain valve (5) is provided at the connection of the third pipeline (2) and the gearbox (6). The two-phase oil sump system (1) includes an oil storage tank (11). The oil storage tank (11) is sequentially connected to a filter (15) and a heating tank (14) through the third pipeline (2). The heating tank (14) is arranged above the filter (15). The oil storage tank (11) is connected to an oil atomizer (12) through the first pipeline (8).

2. The dual-phase lubrication system for a gearbox according to claim 1, wherein: A plurality of gearboxes (6) are provided. Each gearbox (6) is connected to the two-phase oil sump system (1). One or more sets of meshing gears (9) are arranged in the gearbox (6). An input shaft (4) is arranged at the left end of the gearbox (6), and an output shaft (7) is arranged at the right end of the gearbox (6).

3. A dual-phase lubrication system for a gearbox according to claim 1, characterized in that, A downward oil passage (157) is arranged in the filter (15). An oil inlet (154), a first filter screen (153), a magnetic filter core (155), a second filter screen (152), and an oil outlet (151) are sequentially arranged from top to bottom in the oil passage (157).

4. A dual-phase lubrication system for a gearbox according to claim 3, characterized in that: The oil inlet (154) and the oil outlet (151) are respectively connected to the third pipeline (2).

5. A dual-phase lubrication system for a gearbox according to claim 3, characterized in that: The outer part of the magnetic filter core (155) is a ceramic filter body, and a magnet bar (156) is arranged inside.

6. The dual-phase lubrication system for a gearbox according to claim 1, characterized in that, A spiral pipe (141) is arranged in the heating tank (14). The top and bottom of the spiral pipe (141) are respectively connected to the third pipeline (2).

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