Oil supply system

Abstract

The utility model relates to the technical field of mechanical equipment, in particular to an oil supply system which comprises a pressure tank. The upper end of the outer side of the pressure tank communicates with an oil barrel through a first oil way, and the lower end of the outer side of the pressure tank communicates with an oil valve through a second oil way. The top end of the pressure tank communicates with a first gas path. The vacuum generator exhausts air in the pressure tank from a port of the positive and negative switching valve along the second air path, at the moment, a negative pressure state is formed in the pressure tank, oil in the oil barrel enters the pressure tank under the action of atmospheric pressure, and when the oil in the pressure tank reaches an upper limit, the first one-way valve and the third one-way valve are controlled to be closed, and the oil in the oil barrel enters the pressure tank. The first one-way valve and the second one-way valve are opened, the second one-way valve and the fourth one-way valve are opened, then the positive-negative switching valve is controlled to switch the passage to the third air passage, positive pressure is generated in the pressure tank at the moment, oil in the pressure tank is supplied to the oil valve through the fourth one-way valve, and the oil supply system can provide pressure oil and can directly suck oil into the oil tank by operating the positive-negative switching valve of the reversing valve after the oil is used up.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to an oil supply system. Background Art

[0002] The pressure tank oil supply system is a common industrial lubrication system that is used to supply lubricating oil or grease under pressure to mechanical parts or equipment that need lubrication. The pressure tank oil supply system is a commonly used lubrication solution in modern industry. It effectively ensures the efficient operation and long-term stability of the equipment by driving the supply of lubricant under pressure.

[0003] A drawback of the existing pressure tank oil supply system is that it is difficult to refill the tank after the oil is used up. The existing solution is to prepare a special pneumatic pressure pump to supply oil to the tank, but the cost of doing so is relatively high. Utility Model Content

[0004] The purpose of the utility model is to provide an oil supply system to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An oil supply system comprising

[0007] Pressure tank;

[0008] The outer upper end of the pressure tank is connected to an oil barrel through an oil circuit 1, and the outer lower end of the pressure tank is connected to an oil valve through an oil circuit 2;

[0009] The top end of the pressure tank is connected to a gas circuit 1, and the other end of the gas circuit 1 is provided with a reversing mechanism.

[0010] Preferably, the reversing mechanism comprises a one-way valve 1 and a one-way valve 2, the end of the gas circuit 1 away from the pressure tank is connected to the one-way valve 1 and the one-way valve 2 respectively through a three-way connection, the ends of the one-way valve 1 and the one-way valve 2 away from the gas circuit 1 are connected to the gas circuit 2 and the gas circuit 3 respectively, and the ends of the gas circuit 2 and the gas circuit 3 away from the one-way valve 1 and the one-way valve 2 are connected to the positive and negative switching valve;

[0011] Preferably, the reversing mechanism further includes a vacuum generator, and the gas circuit 2 is provided with a vacuum generator between the one-way valve 1 and the positive and negative switching valve;

[0012] Preferably, the gas circuit three is provided with a pressure reducing valve between the positive and negative switching valve and the one-way valve two;

[0013] Preferably, the oil circuit 1 is provided with a one-way valve 3 between the oil drum and the pressure tank;

[0014] Preferably, a one-way valve four is provided in the oil circuit two between the oil valve and the pressure tank.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] In this oil supply system, a vacuum generator discharges the air inside the pressure tank along the air path 2 from the port of the positive and negative switching valve. At this time, a negative pressure state is formed inside the pressure tank, and the oil inside the oil barrel enters the pressure tank under the action of atmospheric pressure. When the oil inside the pressure tank reaches the upper limit, the one-way valve 1 and the one-way valve 3 are controlled to be closed, and the one-way valve 2 and the one-way valve 4 are opened, and then the positive and negative switching valve is controlled to switch the passage to the air path 3. At this time, a positive pressure is generated inside the pressure tank, and the oil in the pressure tank is supplied to the oil valve through the one-way valve 4 to work. This oil supply system can not only provide pressurized oil but also directly suck the oil into the oil tank by operating the positive and negative switching valve of the reversing valve after the oil is used up. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall connection structure of the utility model.

[0018] In the figure: 1. Positive and negative switching valve; 2. Pressure reducing valve; 3. Vacuum generator; 4. One-way valve 1; 5. One-way valve 2; 6. Pressure tank; 7. One-way valve 3; 8. One-way valve 4; 9. Oil valve; 10. Oil drum; 11. Oil circuit 1; 12. Oil circuit 2; 13. Gas circuit 1; 14. Gas circuit 3; 15. Gas circuit 2. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1 As shown, a technical solution provided by the utility model:

[0021] An oil supply system includes a pressure tank 6; the outer upper end of the pressure tank 6 is connected to an oil barrel 10 through an oil circuit 11, and the outer lower end of the pressure tank 6 is connected to an oil valve 9 through an oil circuit 2 12; the top of the pressure tank 6 is connected to an air circuit 13, and the other end of the air circuit 13 is provided with a reversing mechanism, the reversing mechanism includes a check valve 14 and a check valve 2 5, the end of the air circuit 13 away from the pressure tank 6 is respectively connected to the check valve 14 and the check valve 2 5 through a three-way connection, and the ends of the check valve 14 and the check valve 25 away from the air circuit 13 are respectively connected to the air circuit 13. The two gas circuits 15 and the three gas circuits 14 are connected to the positive and negative switching valve 1 at one end of the two gas circuits 15 and the three gas circuits 14 away from the one-way valve 14 and the two-way valve 5; the reversing mechanism also includes a vacuum generator 3, and the two gas circuits 15 are provided with a vacuum generator 3 between the one-way valve 14 and the positive and negative switching valve 1; the three gas circuits 14 are provided with a pressure reducing valve 2 between the positive and negative switching valve 1 and the two-way valve 5; the oil circuit 1 11 is provided with a one-way valve 3 7 between the oil barrel 10 and the pressure tank 6; the oil circuit 2 12 is provided with a one-way valve 4 8 between the oil valve 9 and the pressure tank 6;

[0022] In this embodiment, during operation, the one-way valve 1 4 and the one-way valve 2 5 are started, the one-way valve 1 4 is opened, the one-way valve 2 5 is closed, and then the vacuum generator 3 is started. The vacuum generator 3 discharges the air inside the pressure tank 6 along the gas path 2 15 from the port of the positive and negative switching valve 1. At this time, a negative pressure state is formed inside the pressure tank 6, and the oil inside the oil barrel 10 enters the pressure tank 6 under the action of atmospheric pressure. When the oil inside the pressure tank 6 reaches the upper limit, the one-way valve 1 4 and the one-way valve 3 7 are controlled to be closed, the one-way valve 2 5 and the one-way valve 4 8 are opened, and then the positive and negative switching valve 1 is controlled to switch the passage to the gas path 3 14. At this time, a positive pressure is generated inside the pressure tank 6, and the oil in the pressure tank 6 is supplied to the oil valve 9 through the one-way valve 4 8 to work. This oil supply system can not only provide pressurized oil but also directly suck oil into the oil tank by operating the reversing valve positive and negative switching valve 1 after the oil is used up.

[0023] Working principle: When working, start the one-way valve 1 4 and the one-way valve 2 5, the one-way valve 1 4 is opened, the one-way valve 2 5 is closed, and then the vacuum generator 3 is started. The vacuum generator 3 discharges the air inside the pressure tank 6 along the gas path 2 15 from the port of the positive and negative switching valve 1. At this time, a negative pressure state is formed inside the pressure tank 6, and the oil inside the oil barrel 10 enters the pressure tank 6 under the action of atmospheric pressure. When the oil inside the pressure tank 6 reaches the upper limit, the one-way valve 1 4 and the one-way valve 3 7 are controlled to be closed, the one-way valve 2 5 and the one-way valve 4 8 are opened, and then the positive and negative switching valve 1 is controlled to switch the passage to the gas path 3 14. At this time, a positive pressure is generated inside the pressure tank 6, and the oil in the pressure tank 6 is supplied to the oil valve 9 through the one-way valve 4 8 to work.

[0024] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An oil supply system, characterized in that: include Pressure tank (6); The outer upper end of the pressure tank (6) is connected to an oil barrel (10) through an oil circuit 1 (11), and the outer lower end of the pressure tank (6) is connected to an oil valve (9) through an oil circuit 2 (12); The top end of the pressure tank (6) is connected to an air circuit 1 (13), and the other end of the air circuit 1 (13) is provided with a reversing mechanism.

2. The oil supply system according to claim 1, characterized in that: The reversing mechanism comprises a one-way valve (4) and a two-way valve (5); one end of the gas circuit (13) away from the pressure tank (6) is connected to the one-way valve (4) and the two-way valve (5) respectively through a three-way connection; one end of the one-way valve (4) and the two-way valve (5) away from the gas circuit (13) is connected to the two-way valve (15) and the three-way valve (14) respectively; one end of the gas circuit (15) and the three-way valve (14) away from the one-way valve (4) and the two-way valve (5) is connected to the positive and negative switching valve (1).

3. The oil supply system according to claim 2, characterized in that: The reversing mechanism also includes a vacuum generator (3), and the second gas path (15) is provided with the vacuum generator (3) between the one-way valve (4) and the positive and negative switching valve (1).

4. The oil supply system according to claim 2, characterized in that: The gas circuit three (14) is provided with a pressure reducing valve (2) between the positive and negative switching valve (1) and the one-way valve two (5).

5. The oil supply system according to claim 1, characterized in that: The oil circuit one (11) is located between the oil barrel (10) and the pressure tank (6) and is provided with a one-way valve three (7).

6. The oil supply system according to claim 1, characterized in that: The oil circuit 2 (12) is provided with a one-way valve 4 (8) between the oil valve (9) and the pressure tank (6).

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