Air binding prevention structure of gear oil pump

Abstract

The utility model belongs to the technical field of mechanical equipment, particularly relates to a gear oil pump anti-air-binding structure, and aims to solve the problem of air binding of a gear oil pump in the background technology, the gear oil pump anti-air-binding structure comprises a lubricating oil tank, and a first gear oil pump and a second gear oil pump are respectively arranged on the outer wall of the top of the lubricating oil tank. The oil return branch pipes of the manifold valves are converged into the oil return header pipe, the oil return header pipe enters the lubricating oil tank through the oil return valve, and when equipment is started, oil-gas mixtures can be discharged into the lubricating oil tank, so that the problem of gas binding is avoided, the outlet pressure meets the requirement, and when the outlet pressure of the equipment is lower than an interlocking value, a standby machine is started, and the standby machine is started. And the oil-gas mixture in the pump cavity is discharged back into the lubricating oil tank, so that the problem that the oil pump with the gear mounted on the liquid is filled with air in the cavity, so that the oil pump cannot be fed due to air binding in the starting process is solved, and the operation requirement of the whole lubricating system can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to an anti-air binding structure for a gear oil pump. Background Art

[0002] Usually the gear oil pump is installed on the top of the oil tank to deliver lubricating oil to various lubrication points of the entire unit for lubrication. The equipment is one in operation and one in standby. When the outlet pressure of the running gear oil pump is lower than the specified value, the standby machine interlock is started to ensure the normal operation of the lubrication system of the entire unit.

[0003] However, since the gear oil pump is installed above the liquid, the standby machine cavity is filled with air. During the startup process, the "lack of quantity" phenomenon may occur due to air binding. At this time, the standby machine outlet pressure is also very low and cannot meet the operating requirements of the entire lubrication system. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a gear oil pump anti-air binding structure, which overcomes the deficiencies in the prior art and effectively solves the problem of air binding in the gear oil pump.

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

[0006] A gear oil pump anti-air binding structure comprises a lubricating oil tank, wherein a first gear oil pump and a second gear oil pump are respectively arranged on the top outer wall of the lubricating oil tank, the oil outlets of the first gear oil pump and the second gear oil pump are both connected to oil outlet branches, and manifold valves are installed on the top outer walls of the two oil outlet branches, a pressure gauge is installed on the top outer wall of the manifold valve, and an oil return branch is fixedly connected between the two manifold valves, and an oil return valve is installed on the outer wall of the oil return branch;

[0007] A gear pump outlet valve is installed on the outer wall of one end of the oil outlet branch pipe, and an oil outlet main pipe is installed on the outer wall of the top of the gear pump outlet valve.

[0008] Preferably, an oil return main pipe is fixedly connected between the lubricating oil tank and the oil return valve.

[0009] Preferably, an outer wall at one end of the oil outlet main pipe is fixedly connected to an in-use device.

[0010] Preferably, a support plate is fixedly connected to the top outer wall of the lubricating oil tank, and the support plate is welded to the outer wall of the oil outlet main pipe.

[0011] Preferably, symmetrically distributed lifting rings are fixedly connected to the bases of the first gear oil pump and the second gear oil pump.

[0012] Preferably, fastening bolts are fixedly connected between the bases of the first gear oil pump and the second gear oil pump and the lubricating oil tank.

[0013] Preferably, flanges are fixedly connected between the oil outlet branch pipe and the gear pump outlet valve, and between the gear pump outlet valve and the oil outlet main pipe.

[0014] The beneficial effects of the utility model are:

[0015] 1. The gear oil pump anti-gas binding structure of this design is connected to the oil return main pipe through the return oil branch pipe of the manifold valve, and the return oil main pipe enters the lubricating oil tank through the return oil valve. When the equipment is started, the oil-gas mixture can be discharged into the lubricating oil tank, thereby avoiding the gas binding problem and making the outlet pressure meet the requirements;

[0016] 2. The gear oil pump anti-air binding structure of this design starts the standby machine when the outlet pressure of the equipment in use is lower than the interlocking value, and discharges the oil and air mixture in the pump chamber back to the lubricating oil tank. This solves the problem of "lack of quantity" caused by air binding during the startup process of the gear oil pump installed on the liquid because the cavity is full of air, and can meet the operating requirements of the entire lubrication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of the overall structure of a gear oil pump anti-air binding structure proposed by the utility model;

[0018] Figure 2 This is a side view of the overall structure of a gear oil pump anti-air binding structure proposed by the utility model;

[0019] Figure 3 The utility model provides a schematic diagram of the manifold valve connection structure of the gear oil pump anti-air binding structure.

[0020] In the figure: 1. Lubricating oil tank; 2. First gear oil pump; 3. Second gear oil pump; 4. Oil outlet branch pipe; 5. Manifold valve; 6. Pressure gauge; 7. Return oil branch pipe; 8. Return oil valve; 9. Return oil main pipe; 10. Gear pump outlet valve; 11. Oil outlet main pipe; 12. Equipment in use; 13. Support plate; 14. Lifting ring; 15. Flange; 16. Fastening bolts. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Embodiment 1, refer to Figures 1 to 3A gear oil pump anti-air binding structure comprises a lubricating oil tank 1, wherein a first gear oil pump 2 and a second gear oil pump 3 are respectively arranged on the top outer wall of the lubricating oil tank 1, the oil outlets of the first gear oil pump 2 and the second gear oil pump 3 are connected with oil outlet branches 4, and manifold valves 5 are installed on the top outer wall of the two oil outlet branches 4, a pressure gauge 6 is installed on the top outer wall of the manifold valve 5, and an oil return branch pipe 7 is fixedly connected between the two manifold valves 5, and an oil return valve 8 is installed on the outer wall of the oil return branch pipe 7.

[0023] In this embodiment, the oil return branch pipe 7 through the manifold valve 5 is connected to the oil return main pipe 9, and the oil return main pipe 9 enters the lubricating oil tank 1 through the oil return valve 8. When the equipment is started, the oil-gas mixture can be discharged into the lubricating oil tank 1, thereby avoiding the gas binding problem and ensuring that the outlet pressure meets the requirements.

[0024] Example 2, refer to Figure 1 A gear oil pump anti-air binding structure, a gear pump outlet valve 10 is installed on the outer wall of one end of the oil outlet branch pipe 4, and an oil outlet main pipe 11 is installed on the outer wall of the top of the gear pump outlet valve 10.

[0025] In this embodiment, when the outlet pressure of the equipment 12 in use is lower than the interlock value, the standby machine is started and the oil-gas mixture in the pump chamber is discharged back into the lubricating oil tank 1, which solves the problem of "lack of quantity" caused by air binding during the startup process of the gear oil pump installed on the liquid because the cavity is full of air, and can meet the operating requirements of the entire lubrication system.

[0026] Reference Figures 2 to 3 An oil return main pipe 9 is fixedly connected between the lubricating oil tank 1 and the oil return valve 8.

[0027] Reference Figure 2 The outer wall of one end of the oil outlet main pipe 11 is fixedly connected with an in-use device 12.

[0028] Reference Figure 2 A support plate 13 is fixedly connected to the top outer wall of the lubricating oil tank 1 , and the support plate 13 is welded to the outer wall of the oil outlet main pipe 11 .

[0029] Reference Figures 1 to 2 The bases of the first gear oil pump 2 and the second gear oil pump 3 are fixedly connected with symmetrically distributed lifting rings 14 , and the bases of the first gear oil pump 2 and the second gear oil pump 3 and the lubricating oil tank 1 are fixedly connected with fastening bolts 16 .

[0030] Reference Figures 1 to 2 A flange 15 is fixedly connected between the oil outlet branch pipe 4 and the gear pump outlet valve 10 , and between the gear pump outlet valve 10 and the oil outlet main pipe 11 .

[0031] Working principle: The first gear oil pump 2 is a running device, and the second gear oil pump 3 is an online standby device. Open the manifold valve 5 corresponding to the first gear oil pump 2 and the second gear oil pump 3, and then open the return oil valve 8. When the outlet pressure of the first gear oil pump 2 is lower than the standard value, the motor interlock of the second gear oil pump 3 is started, and the oil-gas mixture in the pump cavity of the second gear oil pump 3 is returned to the lubricating oil tank 1 through the return oil branch pipe 7 and the return oil valve 8. At this time, the reading of the outlet pressure gauge 6 of the second gear oil pump 3 can be observed to confirm the lubrication system pressure data.

[0032] 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.

Claims

1. A gear oil pump anti-air binding structure, comprising a lubricating oil tank (1), characterized in that: The top outer wall of the lubricating oil tank (1) is respectively provided with a first gear oil pump (2) and a second gear oil pump (3); the oil outlets of the first gear oil pump (2) and the second gear oil pump (3) are both connected to an oil outlet branch pipe (4); and the top outer walls of the two oil outlet branch pipes (4) are both installed with a manifold valve (5); the top outer wall of the manifold valve (5) is installed with a pressure gauge (6); and an oil return branch pipe (7) is fixedly connected between the two manifold valves (5); and an oil return valve (8) is installed on the outer wall of the oil return branch pipe (7); A gear pump outlet valve (10) is installed on the outer wall of one end of the oil outlet branch pipe (4), and an oil outlet main pipe (11) is installed on the outer wall of the top of the gear pump outlet valve (10).

2. The anti-air binding structure of a gear oil pump according to claim 1, characterized in that: An oil return main pipe (9) is fixedly connected between the lubricating oil tank (1) and the oil return valve (8).

3. The anti-air binding structure of a gear oil pump according to claim 1, characterized in that: An in-use device (12) is fixedly connected to the outer wall of one end of the oil outlet main pipe (11).

4. The anti-air binding structure of a gear oil pump according to claim 1, characterized in that: A support plate (13) is fixedly connected to the top outer wall of the lubricating oil tank (1), and the support plate (13) is welded to the outer wall of the oil outlet main pipe (11).

5. The anti-air binding structure of a gear oil pump according to claim 1, characterized in that: The bases of the first gear oil pump (2) and the second gear oil pump (3) are both fixedly connected with symmetrically distributed lifting rings (14).

6. The anti-air binding structure of a gear oil pump according to claim 1, characterized in that: A fastening bolt (16) is fixedly connected between the bases of the first gear oil pump (2) and the second gear oil pump (3) and the lubricating oil tank (1).

7. The anti-air binding structure of a gear oil pump according to claim 1, characterized in that: Flanges (15) are fixedly connected between the oil outlet branch pipe (4) and the gear pump outlet valve (10), and between the gear pump outlet valve (10) and the oil outlet main pipe (11).

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