Micro capillary oil supply device

Abstract

The invention provides a micro capillary oil supply device which is mainly used in the technical field of micro lubrication. The micro capillary oil supply device at least comprises an oil tank and a capillary tube. The oil tank stores lubricating oil with a certain volume or certain mass, and under the capillary action and the gravity action, or under the capillary action and the centrifugal force action, or under the capillary action and the oil pressure action of the lubricating oil, the lubricating oil with a certain flow is output through the capillary tube. Compared with the prior art, the trace capillary oil supply device can respectively supply trace oil to different parts within a certain time range, and the trace capillary oil supply device can be used for trace oil supply in a weightless environment or a vacuum environment.

Description

Technical Field

[0001] The present invention relates to a micro capillary oil supply device, which is mainly used in the field of micro lubrication technology. Background Art

[0002] In a mechanical system, micro lubrication can significantly reduce the amount of lubricating oil required for traditional immersion lubrication or forced lubrication and lower the operating energy consumption and maintenance cost while ensuring the lubrication performance by controlling the supply amount of the lubricating oil. For example, for a rolling bearing, micro lubrication can reduce the friction between the rollers and the inner and outer rings and improve the transmission efficiency. For a sliding bearing, micro lubrication can maintain the oil film, prevent direct metal contact, and improve the transmission efficiency. For high-speed gears and precision gears, micro lubrication can reduce noise and wear and improve the transmission efficiency. For a chain drive, micro lubrication can reduce oil contamination and dust adsorption. For a machine tool guide rail, micro lubrication can reduce friction and maintain accuracy. For a ball screw, micro lubrication can extend the service life and improve the transmission efficiency, balancing the requirements of friction and precision. For a cam assembly, micro lubrication can avoid contact pitting or jamming and improve the transmission efficiency. For the piston ring and cylinder wall of an internal combustion engine or a compressor, micro lubrication can reduce friction and reduce high-temperature ablation. For a cylinder piston rod, micro lubrication can prevent seal wear and reduce the movement resistance. For an oil seal, micro lubrication can reduce friction, wear and aging, and prevent the oil seal from failing. For the sliding parts of a vane pump or a piston pump, micro lubrication can improve the sealing performance and service life. In addition, micro lubrication can significantly reduce the amount of lubricating oil used and the treatment pressure of waste liquid, thus saving costs; due to the small amount of lubricating oil used, micro lubrication can significantly reduce the churning loss, extend the lubricating oil replacement cycle, extend the service life of components, and reduce the maintenance cost. Micro lubrication balances the requirements of performance, energy consumption and environmental protection, and achieves a good lubrication effect with a small amount of lubricating oil.

[0003] On the contrary, overlubrication (i.e., the amount of lubricant used far exceeds the actual demand) can lead to a series of negative effects and even cause system failure. For example, overlubrication may form an overly thick oil film, which will increase the internal viscous resistance of the lubricant (especially at high speeds), and increase energy loss and heat. Excessive lubricant is stirred at high speed in rolling bearings or gears, destroying the uniformity of the oil film, causing intermittent contact between metal surfaces and accelerating wear; in addition, high-speed oil stirring losses will cause a significant increase in system friction heat generation. Excessive lubricant between the piston and the cylinder wall will hinder the heat dissipation of the surface of the parts and aggravate oxidation or ablation caused by high temperature; excessive lubricant will oxidize and carbonize at high temperatures, easily forming colloidal sludge or carbon deposits, blocking the oil circuit or aggravating wear. Excessive lubricant will increase the viscous resistance of moving parts, resulting in increased load on the motor or engine, increased energy consumption, and reduced overall system efficiency. Excessive lubricant is easy to leak from the seal, pollute the surrounding environment, and even cause the product to be scrapped. Excessive lubricant will absorb dust and metal debris to form an abrasive mixture, accelerating component wear. Excessive lubricating oil directly increases the amount of lubricating oil used and the pressure of waste liquid treatment, thereby increasing the purchase cost of lubricating oil. Excessive lubricating oil leaks, contamination or component damage requires frequent shutdowns for cleaning, replacement of seals or bearings, and reduces production efficiency.

[0004] In addition, in a mechanical system, each component has different requirements for the amount of lubricating oil used. Therefore, how to accurately control the amount of lubricating oil supplied to different components within a certain flow range has become a technical problem that needs to be solved urgently in the field of micro-lubrication technology. Summary of the invention

[0005] In order to accurately control the supply amount of lubricating oil within a certain flow range, the present invention aims to provide a micro-capillary oil supply device for supplying lubricating oil to parts of a machine, device, transmission system or mechanism.

[0006] The present invention is achieved through the following solutions:

[0007] The micro capillary oil supply device includes an oil tank and a capillary tube. The interior of the oil tank stores a certain mass or volume of lubricating oil. The interior of the oil tank communicates with the ambient atmosphere around the outside of the oil tank, or the oil pressure of the lubricating oil is greater than the ambient atmospheric pressure around the outside of the oil tank, or the ambient atmosphere around the outside of the oil tank is in a vacuum state or near-vacuum state. The capillary tube is immersed in the lubricating oil. When the interior of the oil tank communicates with the ambient atmosphere around the outside of the oil tank, by means of capillary action and gravity, or by means of capillary action and centrifugal force, the oil tank outputs a certain flow rate of the lubricating oil through the capillary tube. When the oil pressure of the lubricating oil is greater than the ambient atmospheric pressure around the outside of the oil tank, or the ambient atmosphere around the outside of the oil tank is in a vacuum state or near-vacuum state, by means of capillary action and the action of the oil pressure of the lubricating oil, the oil tank outputs a certain flow rate of the lubricating oil through the capillary tube. Within a certain flow rate range, the lubricating oil is directly or indirectly conveyed to the components of the machine, the device, the transmission system or the mechanism through the capillary tube.

[0008] Furthermore, the micro capillary oil supply device further includes a guide tube. The capillary tube passes through the guide tube. The guide tube has a certain protective effect on the capillary tube, or the guide tube has a certain guiding effect on the lubricating oil, or the guide tube has a certain sealing effect on the capillary tube.

[0009] Alternatively, the micro capillary oil supply device has certain requirements for the cleanliness of the lubricating oil.

[0010] Alternatively, the capillary tube restricts the flow rate of the lubricating oil within a certain range by selecting materials with different capillary actions.

[0011] Alternatively, the capillary tube restricts the flow rate of the lubricating oil within a certain range by its cross-sectional size, or the capillary tube restricts the flow rate of the lubricating oil within a certain range by the shape structure and size of its end.

[0012] Alternatively, the capillary tube has a certain microporous structure. The capillary tube restricts the flow rate of the lubricating oil within a certain range by the number of the microporous structures, or by the pore size of the microporous structures, or by the size of the microporous structures.

[0013] Compared with the prior art, the micro capillary oil supply device of the present invention has a simple structure and low cost, and can accurately control the lubricating oil supply amount of the parts of the machine, the device, the transmission system or the mechanism within a certain flow range. Even in a weightless environment or a microgravity environment, and even in a vacuum environment or a near-vacuum environment, the micro capillary oil supply device of the present invention can accurately control the lubricating oil supply amount of the parts of the machine, the device, the transmission system or the mechanism within a certain flow range.

[0014] From the following detailed description of the best mode for implementing the present invention in conjunction with the drawings, the above-mentioned features and advantages of the present invention, as well as other features and advantages, will be easily clear. However, it should be clearly understood that all the drawings are only for description and do not impose any limitation on the definition and scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figures 1 to 8 It is a schematic structural diagram of Embodiment 1. Figures 10 to 15 It is a schematic structural diagram of Embodiment 2. Figures 16 to 21 It is a schematic structural diagram of Embodiment 3. Wherein:

[0016] Figure 1 - 3D schematic structural diagram of Embodiment 1.

[0017] Figure 2 - Front view schematic structural diagram of Embodiment 1.

[0018] Figure 3 - Axial sectional view schematic diagram of Embodiment 1.

[0019] Figure 4 - Partial enlarged view A of the axial sectional view schematic diagram of Embodiment 1.

[0020] Figure 5 - Partial enlarged view B of the axial sectional view schematic diagram of Embodiment 1.

[0021] Figure 6 - Partial enlarged view C of the axial sectional view schematic diagram of Embodiment 1.

[0022] Figure 7 - Partial enlarged view D of the axial sectional view schematic diagram of Embodiment 1.

[0023] Figure 8 - Partial enlarged view E of the axial sectional view schematic diagram of Embodiment 1.

[0024] Figure 9 - Schematic diagram of the microporous structure of the capillary.

[0025] Figure 10 - 3D schematic structural diagram of Embodiment 2.

[0026] Figure 11 - Front view structural schematic diagram of Embodiment 2.

[0027] Figure 12 - Axial sectional schematic diagram of Embodiment 2.

[0028] Figure 13 - Partial enlarged view A of the axial sectional schematic diagram of Embodiment 2.

[0029] Figure 14 - Partial enlarged view B of the axial sectional schematic diagram of Embodiment 2.

[0030] Figure 15 - Partial enlarged view C of the axial sectional schematic diagram of Embodiment 2.

[0031] Figure 16 - 3D structural schematic diagram of Embodiment 3.

[0032] Figure 17 - Front view structural schematic diagram of Embodiment 3.

[0033] Figure 18 - Axial sectional schematic diagram of Embodiment 3.

[0034] Figure 19 - Partial enlarged view A of the axial sectional schematic diagram of Embodiment 3.

[0035] Figure 20 - Partial enlarged view B of the axial sectional schematic diagram of Embodiment 3.

[0036] Figure 21 - Partial enlarged view C of the axial sectional schematic diagram of Embodiment 3.

[0037] Explanation of the marks in the figure: 1 - fuel tank, 11 - first oil drain port, 12 - second oil drain port, 13 - third oil drain port, 14 - bolt hole, 15 - oil filling hole, 16 - fuel tank cap, 17 - vent hole, 21 - first capillary tube, 22 - second capillary tube, 23 - third capillary tube, 32 - second guide tube, 33 - third guide tube, 4 - lubricating oil, G - gravity, P - external pressure. Detailed implementation manners

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments, but the present invention is not limited to the description of the embodiments. Obviously, what is described is only a part of the preferred embodiments of the present invention, not all embodiments. Those skilled in the art of this technology can easily make many changes based on the principle of the invention. Therefore, the present invention is not fixed to the details shown and described, but is intended to cover all changes and modifications within the scope of the claims.

[0039] The terms used in this document are for the sole purpose of describing specific exemplary embodiments and are not intended to be limiting. As used herein, the singular forms "a", "an", etc. may also be intended to include the plural forms, unless the context clearly indicates otherwise. The terms "comprising" and "having" are inclusive and thus specify the presence of the stated features, integers, steps, operations, elements, components, parts, and / or assemblies, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, parts, assemblies, and / or combinations thereof. The method steps, procedures, and operations described herein should not be construed as necessarily requiring the method steps, procedures, and operations to be performed in the particular order discussed or illustrated, unless specifically identified as an order of execution. It should also be understood that additional or alternative steps may be employed.

[0040] Although the terms first, second, third, etc. may be used herein to describe various parts, elements, components, assemblies, layers, and / or portions, these parts, elements, components, assemblies, layers, and / or portions should not be limited by these terms. These terms may be used only to distinguish one part, element, component, assembly, layer, and / or portion. Terms such as "first", "second", "third" and other numerical terms do not imply an order or sequence when used herein, unless the context clearly indicates otherwise.

[0041] Embodiment 1

[0042] A micro-capillary oil supply device, such as Figures 1 to 8 shown, is used to supply lubricating oil to the parts of a machine, device, transmission system, or mechanism. It includes an oil tank 1, a capillary tube, and a diversion tube.

[0043] Wherein, the oil tank 1 is provided with a first oil discharge port 11, a second oil discharge port 12, a third oil discharge port 13, and bolt holes 14. The capillary tube includes a first capillary tube 21, a second capillary tube 22, and a third capillary tube 23. The diversion tube includes a second diversion tube 32 and a third diversion tube 33.

[0044] The interior of the oil tank 1 stores a certain mass or volume of lubricating oil 4. Optionally, according to the specific lubrication requirements of the parts of the machine, device, transmission system, or mechanism, and the fact that the capillary tube has certain requirements for the cleanliness of the lubricating oil 4, the micro-capillary oil supply device has certain requirements for the cleanliness of the lubricating oil 4. As Figures 1 to 5 shown, the interior of the oil tank 1 communicates with the surrounding ambient atmosphere through the first oil discharge port 11, the second oil discharge port 12, and the third oil discharge port 13. Optionally, the oil tank 1 can also adopt an open structure, so that the oil tank 1 can both store a certain mass or volume of lubricating oil 4 and communicate with the surrounding ambient atmosphere. As Figures 1 to 5As shown, the fuel tank 1 is refueled through the first oil drain port 11, the second oil drain port 12 or the third oil drain port 13. Optionally, the fuel tank 1 can also be refueled by existing technologies (for example, selectively refueled through an external oil pump, or refueled through the oil slinging and diversion of the parts of the machine, the device, the transmission system or the mechanism, or manually refueled regularly, etc.).

[0045] The fuel tank 1 is connected to the parts of the machine, the device, the transmission system or the mechanism through the bolt holes 14. Optionally, the fuel tank 1 can also be connected to the parts of the machine, the device, the transmission system or the mechanism by existing technologies (such as spline connection, interference fit of shaft hole, welding, riveting, snap connection or elastic connection, etc.).

[0046] As Figures 1 to 4 and Figure 6 As shown, the first capillary 21 is immersed in the lubricating oil 4 through the first oil drain port 11. Under the capillary action (the phenomenon that a liquid spontaneously rises or falls in a narrow pipe or a tiny pore due to the surface tension and wettability of the liquid, or the action of a narrow pipe or a tiny pore on a liquid with a certain surface tension and wettability) and the action of gravity, the fuel tank 1 can supply a certain flow rate of the lubricating oil 4 through the first capillary 21. Preferably, as Figure 7 shown, under the capillary action and the action of gravity (the direction of the gravity G is as Figures 1 to 2 shown), the first capillary 21 supplies a certain flow rate of the lubricating oil 4 to the parts of the machine, the device, the transmission system or the mechanism. Optionally, when the lubrication requirements of the parts of the machine, the device, the transmission system or the mechanism are different, by selecting materials with different capillary action sizes, or by setting the cross-sectional size of the first capillary 21, or by setting the shape and size of the end of the first capillary 21, or by adjusting the flow rate in the way of existing technologies, the first capillary 21 can also output the lubricating oil 4 with a corresponding flow rate. Optionally, by the way of existing technologies, the first capillary 21 or the material of the first capillary 21 has a certain microporous structure (as Figure 9 shown); through the number of the microporous structures, or through the pore size of the microporous structures, or through the size of the microporous structures, the first capillary 21 limits the flow rate of the lubricating oil 4 within a certain flow rate range.

[0047] As Figures 1 to 4 and Figure 6As shown, the second capillary 22 is immersed in the lubricating oil 4 through the second oil drain port 12. Under the action of capillary force and gravity, the oil tank 1 can supply a certain flow rate of the lubricating oil 4 through the second capillary 22. The second capillary 22 passes through the second guide pipe 32. The second guide pipe 32 has a certain protective effect on the second capillary 22 (for example, the second guide pipe 32 can reduce the pollution of dust and abrasives to the second capillary 22 to a certain extent, or prevent the second capillary 22 from being scratched, etc.). And when the lubricating oil 4 is output through the second capillary 22 under the action of capillary force and gravity, the second guide pipe 32 has a certain guiding effect on the lubricating oil 4. Preferably, as Figure 7 shown, under the action of capillary force and gravity (the direction of gravity G is as Figures 1 to 2 shown), the second capillary 22 supplies a certain flow rate of the lubricating oil 4 to the parts of the machine, the device, the transmission system or the mechanism. Optionally, when the lubrication requirements of the parts of the machine, the device, the transmission system or the mechanism are different, by selecting materials with different capillary action sizes, or by setting the cross-sectional size of the second capillary 22, or by setting the end shape and size of the second capillary 22, or by adjusting the flow rate in the way of the prior art, the second capillary 22 can also output the lubricating oil 4 with a corresponding flow rate. Optionally, in the way of the prior art, the second capillary 22 or the material of the second capillary 22 has a certain microporous structure (as Figure 9 shown); through the number of the microporous structures, or through the pore size of the microporous structures, or through the size of the microporous structures, the second capillary 22 limits the flow rate of the lubricating oil 4 within a certain flow rate range.

[0048] As Figures 1 to 3 and Figures 5 to 6 shown, the third capillary 23 is immersed in the lubricating oil 4 through the third oil drain port 13. Under the action of capillary force and gravity, the oil tank 1 can supply a certain flow rate of the lubricating oil 4 through the third capillary 23. The third capillary 23 passes through the third guide pipe 33. The third guide pipe 33 has a certain protective effect on the third capillary 23 (for example, the third guide pipe 33 can reduce the pollution of dust and abrasives to the third capillary 23 to a certain extent, or prevent the third capillary 23 from being scratched, etc.). And when the lubricating oil 4 is output through the third capillary 23 under the action of capillary force and gravity, the third guide pipe 33 has a certain guiding effect on the lubricating oil 4. Preferably, as Figure 8 shown, under the action of capillary force and gravity (the direction of gravity G is as Figures 1 to 2As shown in the figure, the third capillary 23 supplies a certain flow rate of the lubricating oil 4 to the components of the machine, the device, the transmission system or the mechanism. Optionally, when the lubrication requirements of the components of the machine, the device, the transmission system or the mechanism are different, by selecting materials with different capillary action magnitudes, or by setting the cross-sectional size of the third capillary 23, or by setting the end shape and size of the third capillary 23, or by adjusting the flow rate in the manner of the prior art, the third capillary 23 can also output the lubricating oil 4 with a corresponding flow rate. Optionally, in the manner of the prior art, the third capillary 23 or the material of the third capillary 23 has a certain microporous structure (such as Figure 9 as shown); through the number of the microporous structures, or through the pore size of the microporous structures, or through the size of the microporous structures, the third capillary 23 limits the flow rate of the lubricating oil 4 within a certain flow rate range.

[0049] Under the action of capillary action and gravity G, the oil tank 1 supplies the lubricating oil 4 with corresponding flow rates through the first capillary 21, the second capillary 22, and the third capillary 23 respectively. The number of the capillaries and the flow rate of each capillary under capillary action can be adjusted accordingly according to the lubrication amounts of different components of the machine, the device, the transmission system or the mechanism.

[0050] Compared with the prior art, the micro-capillary oil supply device of the present invention has a simple structure, low cost, high reliability, and can accurately control the supply amounts of lubricating oil for different components within a certain flow rate range, and supply lubricating oil to different components within a certain time range.

[0051] Embodiment 2

[0052] The micro-capillary oil supply device, such as Figures 10 to 15 shown, can be used to supply lubricating oil to the components of a machine, a device, a transmission system or a mechanism in a weightless environment or a microgravity environment. It includes an oil tank 1, capillaries, and a diversion pipe.

[0053] Among them, the oil tank 1 is provided with a first oil discharge port 11, a second oil discharge port 12, an oil injection hole 15, and an oil tank cover 16. The capillaries include a first capillary 21 and a second capillary 22. The diversion pipes include a first diversion pipe 31 and a second diversion pipe 32.

[0054] The interior of the fuel tank 1 stores lubricating oil 4 of a certain mass or volume. Optionally, according to the specific lubrication requirements of the components of the machine, the device, the transmission system or the mechanism, and the fact that the capillary tube has certain requirements for the cleanliness of the lubricating oil 4, the micro-capillary oil supply device has certain requirements for the cleanliness of the lubricating oil 4.

[0055] When the micro-capillary oil supply device is in a weightless environment or a microgravity environment (for example, inside the International Space Station, inside an Earth satellite, or in a free-fall state, etc.). Although capillary action still exists, there is no gravity or the gravity factor is extremely low, resulting in the liquid being limited to diffusing inside the capillary material. Therefore, centrifugal force can be used to promote the diffusion of the liquid in the capillary material and rely on centrifugal force to separate the liquid from the capillary material at the end of the capillary material. As Figures 10 to 12 shown, the fuel tank 1 drives the lubricating oil 4 to rotate by rotation. Optionally, in order to enable the fuel tank 1 to drive the lubricating oil 4 to rotate efficiently, corresponding blades (not shown) can be provided inside the fuel tank 1, or the driving effect of the fuel tank 1 on the lubricating oil 4 can be increased in other existing technical ways.

[0056] As Figure 13 shown, a vent hole 17 is provided on the fuel tank cap 16. The interior of the fuel tank 1 communicates with the surrounding ambient atmosphere through the vent hole 17.

[0057] As Figures 10 to 13 shown, the fuel tank 1 is refueled through the fuel injection hole 15. Optionally, the fuel tank 1 can also be refueled by existing technologies (for example, selectively refueling through an external oil pump, or refueling through the oil slinging and diversion of the components of the machine, the device, the transmission system or the mechanism, or manually refueling regularly, etc.).

[0058] As Figures 10 to 12 And Figure 14 shown, the first capillary tube 21 is immersed in the lubricating oil 4 through the first oil discharge port 11. Under the action of capillary action and the centrifugal force of the lubricating oil 4, the fuel tank 1 can supply a certain flow rate of the lubricating oil 4 through the first capillary tube 21. The first oil discharge port 11 is connected to the first guide pipe 31. The first capillary tube 21 passes through the first guide pipe 31. The first guide pipe 31 has a certain protective effect on the first capillary tube 21 (for example, the first guide pipe 31 can reduce the contamination of the first capillary tube 21 by dust and abrasive debris to a certain extent, or prevent the first capillary tube 21 from being scratched, etc.). And when the lubricating oil 4 is output through the first capillary tube 21 under the action of capillary action and the centrifugal force of the lubricating oil 4, the first guide pipe 31 has a certain guiding effect on the lubricating oil 4. Preferably, as Figure 14As shown, under the action of capillary action and the centrifugal force of the lubricating oil 4, the first capillary 21 supplies a certain flow rate of the lubricating oil 4 to the components of the machine, the device, the transmission system or the mechanism. Optionally, when the lubrication requirements of the components of the machine, the device, the transmission system or the mechanism are different, by selecting materials with different capillary action magnitudes, or by setting the cross-sectional size of the first capillary 21, or by setting the shape and size of the end of the first capillary 21, or by adjusting the rotational speed of the fuel tank 1, or by adjusting the flow rate in a manner of the prior art, the first capillary 21 can also output the lubricating oil 4 with a corresponding flow rate. Optionally, by means of the prior art, the first capillary 21 or the material of the first capillary 21 has a certain microporous structure (such as Figure 9 shown); through the number of the microporous structures, or through the pore size of the microporous structures, or through the size of the microporous structures, the first capillary 21 limits the flow rate of the lubricating oil 4 within a certain flow rate range.

[0059] such as Figures 10 to 12 and Figure 15 shown, the second capillary 22 is immersed in the lubricating oil 4 through the second oil drain port 12. Under the action of capillary action and the centrifugal force of the lubricating oil 4, the fuel tank 1 can supply a certain flow rate of the lubricating oil 4 through the second capillary 22. The second oil drain port 12 is connected to the second guide pipe 32. The second capillary 22 passes through the second guide pipe 32. The second guide pipe 32 has a certain protective effect on the second capillary 22 (for example, the second guide pipe 32 can reduce the contamination of the second capillary 22 by dust and abrasives to a certain extent, or prevent the second capillary 22 from being scratched, etc.). And when the lubricating oil 4 is output through the second capillary 22 under the action of capillary action and the centrifugal force of the lubricating oil 4, the second guide pipe 32 has a certain guiding effect on the lubricating oil 4. Preferably, as Figure 15As shown, under the action of capillary action and the centrifugal force of the lubricating oil 4, the second capillary 22 supplies a certain flow rate of the lubricating oil 4 to the components of the machine, the device, the transmission system or the mechanism. Optionally, when the lubrication requirements of the components of the machine, the device, the transmission system or the mechanism are different, by selecting materials with different capillary action magnitudes, or by setting the cross-sectional size of the second capillary 22, or by setting the end shape and size of the second capillary 22, or by adjusting the rotation speed of the fuel tank 1, or by adjusting the flow rate in the manner of the prior art, the second capillary 22 can also output the lubricating oil 4 with a corresponding flow rate. Optionally, in the manner of the prior art, the second capillary 22 or the material of the second capillary 22 has a certain microporous structure (such as Figure 9 as shown); through the number of the microporous structures, or through the pore size of the microporous structures, or through the size of the microporous structures, the second capillary 22 restricts the flow rate of the lubricating oil 4 within a certain flow rate range.

[0060] Under the action of capillary action and the centrifugal force of the lubricating oil 4, the fuel tank 1 supplies the lubricating oil 4 with corresponding flow rates through the first capillary 21 and the second capillary 22 respectively. The number of the capillaries and the flow rate of each capillary under capillary action can be adjusted accordingly according to the lubrication amounts of different components of the machine, the device, the transmission system or the mechanism.

[0061] Compared with the prior art, the micro-capillary oil supply device of the present invention has a simple structure, low cost, high reliability, and can accurately control the lubricating oil supply amounts of different components within a certain flow rate range, supply lubricating oil to different components within a certain time range, and can be used for micro-lubricating components in a weightless environment or a microgravity environment under certain conditions.

[0062] Embodiment 3

[0063] The micro-capillary oil supply device, such as Figures 16 to 21 as shown, can be used to supply lubricating oil to the components of a machine, a device, a transmission system or a mechanism in a vacuum environment or a near-vacuum environment. It includes a fuel tank 1, capillaries, and a diversion pipe.

[0064] Among them, the fuel tank 1 is provided with a first oil discharge port 11, a second oil discharge port 12, a third oil discharge port 13, and an oil injection hole 15. The capillaries include a first capillary 21, a second capillary 22, and a third capillary 23. The diversion pipes include a first diversion pipe 31, a second diversion pipe 32, and a third diversion pipe 33.

[0065] The interior of the fuel tank 1 stores lubricating oil 4 of a certain mass or a certain volume. Optionally, according to the specific lubrication requirements of the components of the machine, the device, the transmission system or the mechanism, and the fact that the capillary tube has certain requirements for the cleanliness of the lubricating oil 4, the micro-capillary oil supply device has certain requirements for the cleanliness of the lubricating oil 4.

[0066] When the micro-capillary oil supply device is in a vacuum environment or a near-vacuum environment (for example, a space environment or a lunar environment, etc.). Although capillary action still exists, there is no gravity or the gravity factor is extremely low, resulting in the liquid being limited to diffuse inside the capillary material. Therefore, the lubricating oil 4 can be pressurized, and the oil pressure of the lubricating oil 4 is used to promote the diffusion of the liquid in the capillary material, and the liquid is separated from the capillary material at the end of the capillary material by relying on the oil pressure. As Figures 16 to 18 shown, under the action of the external pressure P, the lubricating oil 4 in the fuel tank 1 has a certain oil pressure. Optionally, the lubricating oil 4 can also be made to have a certain oil pressure in the way of the prior art.

[0067] As Figures 16 to 18 shown, the fuel tank 1 is refueled through the fuel injection hole 15. Optionally, the fuel tank 1 can also be refueled by the prior art (for example, selectively refueled through an external oil pump, etc.).

[0068] As Figures 16 to 18 and Figure 19 shown, the first capillary tube 21 is immersed in the lubricating oil 4 through the first oil drain port 11. Under the action of capillary action and the oil pressure of the lubricating oil 4, the fuel tank 1 can supply a certain flow rate of the lubricating oil 4 through the first capillary tube 21. The first oil drain port 11 is connected to the first diversion tube 31. The first capillary tube 21 passes through the first diversion tube 31. The first diversion tube 31 has a certain protective effect on the first capillary tube 21 (for example, the first diversion tube 31 can reduce the pollution of the first capillary tube 21 by dust and abrasives to a certain extent, or prevent the first capillary tube 21 from being scratched, etc.). And when the lubricating oil 4 is output through the first capillary tube 21 under the action of capillary action and the oil pressure of the lubricating oil 4, the first diversion tube 31 has a certain sealing effect and diversion effect on the lubricating oil 4. Preferably, as Figure 19As shown, under the capillary action and the oil pressure of the lubricating oil 4, the first capillary 21 supplies a certain flow rate of the lubricating oil 4 to the components of the machine, the device, the transmission system or the mechanism. Optionally, when the lubrication requirements of the components of the machine, the device, the transmission system or the mechanism are different, by selecting materials with different capillary action magnitudes, or by setting the cross-sectional size of the first capillary 21, or by setting the shape and size of the end of the first capillary 21, or by adjusting the oil pressure of the lubricating oil 4, or by adjusting the flow rate in the manner of the prior art, the first capillary 21 can also output the lubricating oil 4 with a corresponding flow rate. Optionally, in the manner of the prior art, the first capillary 21 or the material of the first capillary 21 has a certain microporous structure (such as Figure 9 shown); through the number of the microporous structures, or through the pore size of the microporous structures, or through the size of the microporous structures, the first capillary 21 limits the flow rate of the lubricating oil 4 within a certain flow rate range.

[0069] Such as Figures 16 to 18 and Figure 20 shown, the second capillary 22 is immersed in the lubricating oil 4 through the second oil drain port 12. Under the capillary action and the oil pressure of the lubricating oil 4, the oil tank 1 can supply a certain flow rate of the lubricating oil 4 through the second capillary 22. The second oil drain port 12 is connected to the second guide pipe 32. The second capillary 22 passes through the second guide pipe 32. The second guide pipe 32 has a certain protective effect on the second capillary 22 (for example, the second guide pipe 32 can reduce the contamination of the second capillary 22 by dust and abrasive debris to a certain extent, or prevent the second capillary 22 from being scratched, etc.). And when the lubricating oil 4 is output through the second capillary 22 under the capillary action and the oil pressure of the lubricating oil 4, the second guide pipe 32 has a certain sealing effect and guiding effect on the lubricating oil 4. Preferably, as Figure 20As shown, under the action of capillary action and the pressure of the lubricating oil 4, the second capillary 22 supplies a certain flow rate of the lubricating oil 4 to the components of the machine, the device, the transmission system or the mechanism. Optionally, when the lubrication requirements of the components of the machine, the device, the transmission system or the mechanism are different, by selecting materials with different capillary action magnitudes, or by setting the cross-sectional size of the second capillary 22, or by setting the end shape and size of the second capillary 22, or by adjusting the oil pressure of the lubricating oil 4, or by adjusting the flow rate in the manner of the prior art, the second capillary 22 can also output the lubricating oil 4 with a corresponding flow rate. Optionally, in the manner of the prior art, the second capillary 22 or the material of the second capillary 22 has a certain microporous structure (such as Figure 9 shown); through the number of the microporous structures, or through the pore size of the microporous structures, or through the size of the microporous structures, the second capillary 22 limits the flow rate of the lubricating oil 4 within a certain flow rate range.

[0070] Such as Figures 16 to 18 and Figure 21 shown, the third capillary 23 is immersed in the lubricating oil 4 through the third oil drain port 13. Under the action of capillary action and the pressure of the lubricating oil 4, the fuel tank 1 can supply a certain flow rate of the lubricating oil 4 through the third capillary 23. The third oil drain port 13 is connected to the third diversion pipe 33. The third capillary 23 passes through the third diversion pipe 33. The third diversion pipe 33 has a certain protective effect on the third capillary 23 (for example, the third diversion pipe 33 can reduce the pollution of the third capillary 23 by dust and abrasives to a certain extent, or prevent the third capillary 23 from being scratched, etc.). And when the lubricating oil 4 is output through the third capillary 23 under the action of capillary action and the pressure of the lubricating oil 4, the third diversion pipe 33 has a certain sealing effect and diversion effect on the lubricating oil 4. Preferably, as Figure 21As shown, under the action of capillary action and the pressure of the lubricating oil 4, the third capillary 23 supplies a certain flow rate of the lubricating oil 4 to the components of the machine, the device, the transmission system or the mechanism. Optionally, when the lubrication requirements of the components of the machine, the device, the transmission system or the mechanism are different, by selecting materials with different capillary action magnitudes, or by setting the cross-sectional size of the third capillary 23, or by setting the end shape and size of the third capillary 23, or by adjusting the oil pressure of the lubricating oil 4, or by adjusting the flow rate in the manner of the prior art, the third capillary 23 can also output the lubricating oil 4 with a corresponding flow rate. Optionally, in the manner of the prior art, the third capillary 23 or the material of the third capillary 23 has a certain microporous structure (such as Figure 9 as shown); through the number of the microporous structures, or through the pore size of the microporous structures, or through the size of the microporous structures, the third capillary 23 limits the flow rate of the lubricating oil 4 within a certain flow rate range.

[0071] Under the action of capillary action and the oil pressure of the lubricating oil 4, the fuel tank 1 supplies the lubricating oil 4 with corresponding flow rates through the first capillary 21, the second capillary 22 and the third capillary 23 respectively. The number of the capillaries and the flow rate of each capillary under capillary action can be adjusted accordingly according to the lubrication amounts of different components of the machine, the device, the transmission system or the mechanism.

[0072] Compared with the prior art, the micro-capillary oil supply device of the present invention has a simple structure, low cost and high reliability, and accurately controls the lubricating oil supply amounts of different components respectively within a certain flow rate range, supplies lubricating oil to different components respectively within a certain time range, and can be used for micro-lubricating components in a vacuum environment or a near-vacuum environment under certain conditions.

[0073] It should be noted that the above embodiments are illustrative of the present invention rather than restrictive of the present invention, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. Therefore, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved. In the claims, the word "comprising" does not exclude the presence of data, steps or components not listed in the claims.

[0074] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A micro-capillary oil supply device for supplying lubricating oil to parts of a machine, device, transmission system or mechanism, characterized in that: The micro-capillary oil supply device comprises an oil tank and a capillary tube; and / or The oil tank stores a certain mass or volume of lubricating oil, the interior of the oil tank is connected to the external surrounding atmosphere of the oil tank, or the oil pressure of the lubricating oil is greater than the external surrounding atmospheric pressure of the oil tank, or the external surrounding environment of the oil tank is in a vacuum state or a near-vacuum state; and / or The capillary is immersed in the lubricating oil; and / or When the interior of the oil tank is in communication with the external ambient atmosphere of the oil tank, the oil tank outputs a certain flow of the lubricating oil through the capillary tube by utilizing capillary action and gravity, or by utilizing capillary action and centrifugal force; and / or When the oil pressure of the lubricating oil is greater than the atmospheric pressure of the external environment of the oil tank, or when the external environment of the oil tank is in a vacuum state or a near-vacuum state, the oil tank outputs a certain flow of the lubricating oil through the capillary tube by utilizing the capillary action and the oil pressure of the lubricating oil; and / or Within a certain flow range, the lubricating oil is directly or indirectly delivered to the parts of the machine, the device, the transmission system or the mechanism through the capillary tube.

2. The micro-capillary oil supply device according to claim 1, characterized in that: The micro-capillary oil supply device further includes a flow guide tube; and / or The capillary tube passes through the flow guide tube, and the flow guide tube has a certain protective effect on the capillary tube, or the flow guide tube has a certain flow guiding effect on the lubricating oil, or the flow guide tube has a certain sealing effect on the capillary tube.

3. The micro-capillary oil supply device according to claim 1, characterized in that: The micro-capillary oil supply device has certain cleanliness requirements for the lubricating oil.

4. The micro-capillary oil supply device according to claim 1, characterized in that: The capillary tube limits the flow rate of the lubricating oil within a certain flow rate range by selecting materials with different capillary effects.

5. The micro-capillary oil supply device according to claim 1, characterized in that: The capillary tube limits the flow rate of the lubricating oil within a certain flow rate range by the cross-sectional size, or the capillary tube limits the flow rate of the lubricating oil within a certain flow rate range by the end shape structure and size.

6. The micro-capillary oil supply device according to claim 1, characterized in that: The capillary has a certain microporous structure; and / or The capillary limits the flow rate of the lubricating oil within a certain flow rate range by the number of the microporous structures, or by the pore size of the microporous structures, or by the size of the microporous structures.

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