Lubricating oil supply device

Abstract

The utility model relates to the technical field of lubricating equipment, in particular to a lubricating oil supply device which comprises an oil tank, an interlayer is arranged in the oil tank, a conveying pipe is arranged in the center of the interlayer, a sleeve is axially installed in the conveying pipe in a sliding mode, a piston is vertically and movably embedded in the sleeve, and an ejector rod matched with the piston is suspended on the bottom wall of the conveying pipe. The side wall of the conveying pipe communicates with a plurality of air guiding pipes laid along the bottom wall of the interlayer, and the upper end of the sleeve abuts against a pressing rod in threaded fit with the top wall of the oil tank. During oil injection, the pressing rod is screwed, the pressing rod abuts against the sleeve and descends until the ejector rod abuts against the piston so that a gap can be formed between the piston and the inner wall of the sleeve, meanwhile, the air leaks out of a communicating pipe opening of the air guide pipe and the conveying pipe, and at the moment, the top of the oil outlet cavity is communicated with the bottom of the oil inlet cavity through the air guide pipe; and gas in the oil outlet cavity continuously floats upwards and is discharged into the oil inlet cavity from the pipe opening in the upper end of the gas guide pipe, so that gas in the oil outlet cavity is discharged outwards, and the situation that the gas pressure in the oil outlet cavity continuously rises to affect the injection amount of lubricating oil is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lubrication equipment, in particular to a lubricating oil supply device. Background Art

[0002] Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts. However, in many equipment, such as engines and reducers, various components run quickly in a small space. Lubricants are not only used for lubrication to reduce friction, but also for auxiliary cooling and cleaning. During the operation of the equipment, lubricants will inevitably be lost, so lubricants need to be replaced or replenished in time after a certain period of use. Traditional lubricant replenishment mainly involves setting up a lubricant tank, extracting it through a pump and inputting it into the lubrication system for replenishment. However, after long-term use, the sensitivity of the electronic components of the lubrication system on many equipment will gradually decrease, and new lubricants are often not replenished in time, and the response is relatively slow.

[0003] Therefore, a new lubricant supply device is needed to solve this problem. For example, the patent document with the announcement number CN204512922U discloses a lubricant supply device for automobiles, in which an oil inlet chamber and an oil outlet chamber are separated in the box body, the oil outlet chamber and the oil inlet chamber are connected through a pipeline, a valve seat is arranged in the oil outlet chamber, and the outer edge of the valve seat is embedded with the inner wall of the box body through a sealing diaphragm; when the lubricant in the oil outlet chamber is lost and the oil pressure drops, the valve seat will be pressed down, and the lubricant in the oil inlet chamber will enter the oil outlet chamber through the pipeline, which is autonomous, does not require electronic components to control, and has high oil supply sensitivity.

[0004] However, the above patent has certain problems when in use: the problem of air pressure balance in the oil outlet chamber: when filling oil, the valve seat is pressed down to inject oil into the oil outlet chamber, but when the oil volume is certain, the air pressure in the oil outlet chamber gradually increases and cannot be discharged, thereby reducing the oil storage amount in the oil outlet chamber and affecting the total supply of lubricating oil.

[0005] In addition, except for the seal supply in the gearbox, most of the lubricating oil is recycled, and the patent does not show the relevant concept of lubricating oil circulation.

[0006] Therefore, the utility model provides a lubricating oil supply device to solve the problem of air pressure balance in the oil outlet cavity 4 . Utility Model Content

[0007] The utility model aims to solve the problems existing in the prior art and proposes a lubricating oil supply device.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A lubricating oil supply device comprises an oil tank for storing lubricating oil, wherein the side walls and the bottom wall at the upper and lower ends of the oil tank are respectively provided with an oil inlet pipe, a circulation pipe and an oil outlet pipe, a liquid level sensor is provided on the inner wall of the oil tank, a sunken partition is provided in the middle and upper part of the oil tank, a transmission pipe is provided in the center of the partition, a sleeve is axially slidably installed in the transmission pipe, a top spring is provided between the sleeve and the transmission pipe, a piston is vertically movably embedded in the sleeve, and a push rod cooperating with the piston is suspended on the bottom wall of the transmission pipe; a plurality of air ducts laid along the bottom wall of the partition are connected to the side wall of the transmission pipe, and a pressure rod cooperating with the thread of the top wall of the oil tank is abutted on the upper end of the sleeve.

[0010] Preferably, a threaded tube is provided on the top wall of the oil tank, and the upper end of the pressure rod is threadably matched with the inner wall of the threaded tube.

[0011] Preferably, the upper end of the pressure rod is provided with a threaded head that matches with the thread of the top wall of the oil tank.

[0012] Preferably, the diameter of the threaded head is larger than the diameter of the pressure rod, a through exhaust hole is provided on the threaded head, a cover is threadedly mounted on the outer wall of the threaded tube, a through hole is provided at the axis of the cover, and the exhaust hole is located between the inner and outer walls of the cover.

[0013] Preferably, a sealing ring is provided between the sealing cover and the top wall of the threaded head.

[0014] Preferably, the length of the threaded tube is greater than the height of the thread head, and a limiting ring is provided at the bottom end of the threaded tube.

[0015] Preferably, a hexagonal countersunk head is provided on the upper end of the thread head.

[0016] Preferably, there are two liquid level sensors, one is arranged on the side of the pressure rod within the vertical height range of the partition, and the other is located below the partition.

[0017] Preferably, a filter screen is provided in the circulation pipe.

[0018] Compared with the prior art, the utility model provides a lubricating oil supply device, which has the following beneficial effects:

[0019] 1. When filling oil, screw the pressure rod, and the pressure rod will descend against the sleeve until the push rod presses against the piston, causing a gap between the piston and the inner wall of the sleeve. At the same time, the connecting pipe opening of the air pipe and the transmission pipe leaks out. At this time, the top of the oil outlet chamber and the bottom of the oil inlet chamber are connected through the air pipe. During the oil filling process, the lubricating oil enters the oil outlet chamber from the gap, and the gas in the oil outlet chamber continuously floats up and is discharged into the oil inlet chamber from the upper end of the air pipe, thereby realizing the external discharge of the gas in the oil outlet chamber and avoiding the continuous increase of the air pressure in the oil outlet chamber and affecting the amount of lubricating oil injected.

[0020] 2. During lubrication, as the lubricating oil is consumed, the liquid level and oil pressure of the lubricating oil in the oil outlet chamber gradually decrease, and the sleeve descends. When the push rod pushes the piston open again, the lubricating oil in the oil inlet chamber will automatically flow into the oil outlet chamber, thereby realizing the autonomous supply of lubricating oil. Compared with electronic control operation, this design does not require external force, is self-regulated, and has high supply sensitivity.

[0021] 3. The collected lubricating oil is returned to the oil outlet chamber from the circulation pipe to complete the recovery of the lubricating oil; the lubricating oil is only circulated in the oil outlet chamber and isolated from the oil inlet chamber to avoid contamination of the lubricating oil stored in the oil inlet chamber.

[0022] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0024] Figure 2 It is a cross-sectional schematic diagram of the utility model.

[0025] Figure 3 For the utility model Figure 2 Local schematic diagram of point A.

[0026] Figure 4 For the utility model Figure 3 Partial schematic diagram of points B and C when the upper and lower cavities of the oil tank are isolated.

[0027] Figure 5 For the utility model Figure 4 Schematic diagram of the oil tank with the upper and lower chambers connected.

[0028] In the figure: 1. oil tank; 2. partition; 3. oil inlet chamber; 4. oil outlet chamber; 5. oil inlet pipe; 6. oil outlet pipe; 7. circulation pipe; 8. transmission pipe; 9. air bleed pipe; 10. sleeve; 11. piston; 12. push rod; 13. pressure rod; 14. threaded pipe; 15. threaded head; 16. cover; 17. exhaust hole; 18. hexagonal countersunk head; 19. filter. DETAILED DESCRIPTION

[0029] The following will be combined with the attached embodiment of the utility model Figure 1-5 , the technical solutions in the embodiments of the utility model are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0030] In order to solve the problems existing in the prior art, the present embodiment provides a lubricating oil supply device, including an oil tank 1 for storing lubricating oil, the upper and lower side walls and the bottom wall of the oil tank 1 are respectively provided with an oil inlet pipe 5, a circulation pipe 7, and an oil outlet pipe 6, and the inner wall of the oil tank 1 is provided with a liquid level sensor, characterized in that a sunken partition 2 is provided in the middle and upper part of the oil tank 1, a transmission pipe 8 is provided in the center of the partition 2, a sleeve 10 is axially slidably installed in the transmission pipe 8, a top spring is provided between the sleeve 10 and the transmission pipe 8, a piston 11 is vertically movably embedded in the sleeve 10, and a push rod 12 cooperating with the piston 11 is suspended on the bottom wall of the transmission pipe 8; the side wall of the transmission pipe 8 is connected to a plurality of air bleed pipes 9 laid along the bottom wall of the partition 2, and the upper end of the sleeve 10 is abutted against a pressure rod 13 cooperating with the thread of the top wall of the oil tank 1.

[0031] Principle details of this embodiment:

[0032] A lubricating oil supply device comprises an oil tank 1 for storing lubricating oil, a partition 2 is arranged at the middle and upper part of the oil tank 1, and the oil tank 1 is further divided into an oil inlet chamber 3 and an oil outlet chamber 4, the bottom wall of the oil tank 1 and the partition 2 are sunken, similar to a bucket shape, so as to facilitate the gathering of lubricating oil; the upper side wall of the oil inlet chamber 3 of the oil tank 1 is connected with an oil inlet pipe 5, the bottom wall of the oil outlet chamber 4 of the oil tank 1 is connected with an oil outlet pipe 6, and the side wall of the oil outlet chamber 4 of the oil tank 1 is connected with a circulation pipe 7; a liquid level sensor is arranged on the inner wall of the oil tank 1, which is used to monitor the liquid level of the lubricating oil, that is, to monitor the remaining amount of lubricating oil in the oil tank 1, so as to replenish the oil tank 1 in time.

[0033] A conveying pipe 8 is provided at the center of the partition 2, and an embedded groove is provided in the conveying pipe 8. A sleeve 10 is axially slidably installed in the embedded groove. A top spring is provided between the bottom wall of the sleeve 10 and the bottom wall of the conveying pipe 8. A piston 11 is vertically movably embedded in the sleeve 10, and a push rod 12 cooperating with the piston 11 is suspended on the bottom wall of the conveying pipe 8.

[0034] The side wall of the transmission pipe 8 is connected to multiple air ducts 9, which are laid along the bottom wall of the partition 2 and the upper end of the air duct 9 is located below the connection between the partition 2 and the inner wall of the oil tank 1. The upper end of the sleeve 10 is abutted against a pressure rod 13 that is threadedly matched with the top wall of the oil tank 1. The upper end of the pressure rod 13 is provided with a polygonal head or a knob for driving the pressure rod 13.

[0035] When filling oil, first close the oil outlet pipe 6 and the circulation pipe 7, open the oil inlet pipe 5, and then screw the pressure rod 13, the pressure rod 13 is pressed against the sleeve 10 to descend, until the push rod 12 presses against the piston 11 so that a gap is generated between the piston 11 and the inner wall of the sleeve 10, and at the same time, the connecting pipe opening of the air bleed pipe 9 and the transmission pipe 8 leaks out. At this time, the top of the oil outlet chamber 4 and the bottom of the oil inlet chamber 3 are connected through the air bleed pipe 9, and gas flows; then, lubricating oil is injected into the oil inlet chamber 3 of the oil tank 1 through the oil inlet pipe 5, the lubricating oil is injected into the oil inlet chamber 3 and sinks into the transmission pipe 8 along the partition 2, and then penetrates into the oil outlet chamber 4 along the gap; as the lubricating oil The lubricating oil is continuously injected into the oil outlet chamber 4, and the gas in the oil outlet chamber 4 continuously floats up and is discharged from the upper end of the air duct 9 into the upper end of the transmission pipe 8, and then enters the oil inlet chamber 3, so as to realize the external discharge of the gas in the oil outlet chamber 4, and avoid the continuous increase of the air pressure in the oil outlet chamber 4 and affect the amount of lubricating oil injection; after the injection of the lubricating oil is completed, the oil inlet pipe 5 is closed, and the pressure rod 13 is screwed to make the pressure rod 13 rise and reset. Since the partition 2 is located in the upper middle part of the oil tank 1, under the action of the top spring and the buoyancy, the sleeve 10 floats and resets, and the piston 11 is tightly fitted with the inner wall of the sleeve 10 under the pressure of the lubricating oil above, thereby closing the transmission pipe 8.

[0036] During lubrication, the circulation pipe 7 and the oil outlet pipe 6 are opened, and the lubricating oil flows out of the oil outlet chamber 4 from the oil outlet pipe 6 and enters the lubrication system. As the lubricating oil is consumed, the total amount of lubricating oil in the oil outlet chamber 4 gradually decreases, and the oil pressure in the oil outlet chamber 4 gradually decreases, so that the sleeve 10 drops. When the push rod 12 pushes the piston 11 again, the lubricating oil in the oil inlet chamber 3 will automatically enter the oil outlet chamber 4. When the oil level in the oil outlet chamber 4 rises, the sleeve 10 and the piston 11 will be pushed up again, and the transmission pipe 8 will be sealed again. In this way, whenever the oil level and oil pressure in the oil outlet chamber 4 drop to a certain level, the lubricating oil in the oil inlet chamber 3 will gradually be injected into the oil outlet chamber 4, thereby realizing the autonomous supply of lubricating oil. Compared with the electronic control operation, this design does not require external force, is self-regulated, and has high supply sensitivity.

[0037] The circulated and collected lubricating oil returns to the oil outlet chamber 4 from the circulation pipe 7, completing the recovery of the lubricating oil; and the lubricating oil is only circulated in the oil outlet chamber 4 and isolated from the oil inlet chamber 3, avoiding contamination of the lubricating oil stored in the oil inlet chamber 3.

[0038] In a further embodiment of the present scheme, a threaded tube 14 is provided on the top wall of the oil tank 1 , and the threaded tube 14 penetrates through the top wall of the oil tank 1 . The upper end of the pressure rod 13 is threadedly matched with the inner wall of the threaded tube 14 , and passes through the pipe mouth of the threaded tube 14 to realize the screwing operation of the pressure rod 13 .

[0039] In a further embodiment of the present solution, a threaded head 15 is provided at the upper end of the compression rod 13 to cooperate with the thread of the top wall of the oil tank 1 , and the compression rod 13 is fastened and installed by the threaded cooperation between the threaded head 15 and the threaded tube 14 .

[0040] In a further embodiment of the present scheme, the diameter of the threaded head 15 is larger than the diameter of the pressure rod 13, and a through exhaust hole 17 is provided on the threaded head 15. A cover 16 is threadedly mounted on the outer wall of the threaded tube 14, and a through hole is provided at the axis of the cover 16. The exhaust hole 17 is located between the inner and outer walls of the cover 16.

[0041] Principle details of this embodiment:

[0042] In the initial state, the cover 16 is screwed and fastened on the threaded tube 14, and the upper end of the pressure rod 13 abuts against the inner top wall of the cover 16, so that the exhaust hole 17 is blocked;

[0043] When filling oil, the pressure rod 13 is screwed, the pressure rod 13 descends and separates from the sealing cover 16, and the exhaust hole 17 leaks out, so that the oil inlet chamber 3 is connected with the outside, which is used for gas discharge and realizes the air pressure balance between the oil inlet chamber 3 and the oil outlet chamber 4.

[0044] In a further embodiment of the present solution, a sealing ring is provided between the sealing cover 16 and the top wall of the threaded head 15 to improve the air tightness of the exhaust hole 17 .

[0045] In a further embodiment of the present scheme, the length of the threaded tube 14 is greater than the height of the threaded head 15, and a limiting ring is provided at the bottom end of the threaded tube 14. By screwing the threaded head 15, the threaded head 15 abuts against the limiting ring, so that the sleeve 10 can be lowered to the connecting pipe port of the air bleed pipe 9 and the transmission pipe 8 to leak out and the piston 11 is lifted. Through the height difference between the threaded head 15 and the threaded tube 14, a floating space is reserved for the threaded head 15 to float up and down, and the threaded head 15 is prevented from being screwed excessively and falling into the oil inlet chamber 3.

[0046] In a further embodiment of the present bill, a hexagonal countersunk head 18 is provided at the upper end of the threaded head 15. By inserting a seven-shaped wrench into the hexagonal countersunk head 18, the threaded head 15 can be driven to rotate, so that the threaded head 15 is hidden in the threaded tube 14, reducing the space occupied by the equipment extension and reducing installation interference.

[0047] In a further embodiment of the present scheme, there are two liquid level sensors, one is arranged on the side of the pressure rod 13 within the vertical height range of the partition 2, and the other is located below the partition 2, which are respectively used to monitor the remaining amount of lubricating oil in the oil inlet chamber 3 and the oil outlet chamber 4 to improve the detection accuracy.

[0048] In a further embodiment of the present solution, a filter screen 19 is provided in the circulation pipe 7 for filtering out impurities in the circulating lubricating oil.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A lubricating oil supply device, comprising an oil tank (1) for storing lubricating oil, wherein the upper and lower side walls and the bottom wall of the oil tank (1) are respectively provided with an oil inlet pipe (5), a circulation pipe (7), and an oil outlet pipe (6), and the inner wall of the oil tank (1) is provided with a liquid level sensor. It is characterized in that A sunken partition (2) is provided in the middle and upper part of the oil tank (1), a transmission pipe (8) is provided in the center of the partition (2), a sleeve (10) is axially slidably installed in the transmission pipe (8), a top spring is provided between the sleeve (10) and the transmission pipe (8), a piston (11) is vertically movably embedded in the sleeve (10), and a top rod (12) cooperating with the piston (11) is suspended on the bottom wall of the transmission pipe (8); a plurality of air ducts (9) laid along the bottom wall of the partition (2) are connected to the side wall of the transmission pipe (8), and a pressure rod (13) cooperating with a thread of the top wall of the oil tank (1) is abutted on the upper end of the sleeve (10).

2. A lubricating oil supply device according to claim 1, It is characterized in that The top wall of the oil tank (1) is provided with a threaded tube (14), and the upper end of the pressure rod (13) is threadably matched with the inner wall of the threaded tube (14).

3. A lubricating oil supply device according to claim 2, It is characterized in that The upper end of the pressure rod (13) is provided with a threaded head (15) that matches the thread of the top wall of the oil tank (1).

4. A lubricating oil supply device according to claim 3, It is characterized in that The diameter of the threaded head (15) is larger than the diameter of the pressure rod (13), and a through vent hole (17) is provided on the threaded head (15). A sealing cover (16) is threadedly mounted on the outer wall of the threaded tube (14), and a through hole is provided at the axis of the sealing cover (16). The vent hole (17) is located between the inner and outer walls of the sealing cover (16).

5. A lubricating oil supply device according to claim 4, It is characterized in that A sealing ring is provided between the sealing cover (16) and the top wall of the threaded head (15).

6. A lubricating oil supply device according to claim 4, It is characterized in that The length of the threaded tube (14) is greater than the height of the threaded head (15), and a limiting ring is provided at the bottom end of the threaded tube (14).

7. A lubricating oil supply device according to claim 4, It is characterized in that The upper end of the threaded head (15) is provided with a hexagonal countersunk head (18).

8. A lubricating oil supply device according to claim 1, It is characterized in that There are two liquid level sensors, one is arranged on the side of the pressure rod (13) within the vertical height range of the partition (2), and the other is located below the partition (2).

9. A lubricating oil supply device according to claim 1, It is characterized in that A filter screen (19) is provided in the circulation pipe (7).

Images