Air compressor with improved structure

Abstract

The utility model provides an air compressor with an improved structure, which comprises an air compressor main body, the air compressor main body is provided with an air inlet and an air outlet, the air outlet is provided with an exhaust pipe, the lower part of a gear box of the air compressor main body is communicated with an oil tank, the oil tank is provided with an oil supply pipe, and an oil pressure balance pipe is arranged above the oil tank. The lower end of the oil pressure balance pipe is communicated with the top space of the oil tank, an oil mist separator is arranged at the upper end of the oil pressure balance pipe, an air suction pipe is arranged on the side wall of the upper portion of the oil mist separator, the tail end of the air suction pipe is connected with the suction end of a centrifugal fan, a discharge pipe is arranged at the discharge end of the centrifugal fan, and an oil return pipe is arranged at the bottom of the oil mist separator. The tail end of the oil return pipe communicates with the oil tank. The centrifugal fan is used for exhausting air from the oil tank, so that negative pressure is generated in the oil tank, lubricating oil can flow to the oil tank from the gearbox, accumulation of the lubricating oil in the gearbox is avoided, mechanical loss of a unit is effectively reduced, operation efficiency is improved, and adverse effects caused by temperature rise of the lubricating oil are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of air compression, in particular to an air compressor with improved structure. Background Art

[0002] The main function of an air compressor is to compress air into a gas with a certain pressure. It is widely used in industrial production tools, such as providing power for various pneumatic tools and providing pneumatic power for various mechanical equipment. The air compressor increases the speed through a large gear, so that the impeller connected to the high-speed shaft can obtain a working speed of tens of thousands of revolutions. For the friction pairs such as the gear increaser meshing point and the high-speed bearing, lubricating oil is required for effective lubrication and cooling. After the lubricating oil has completed the lubrication and cooling of each lubrication point, it is necessary to ensure that the lubricating oil can be quickly discharged from the gearbox to avoid poor oil drainage or accumulation of lubricating oil at the bottom of the gearbox. When the oil is not drained smoothly or the lubricating oil accumulates in the gearbox, the large gear will stir the oil during operation, resulting in additional power consumption and increased mechanical losses, as well as increased lubricating oil temperature and other adverse effects. Summary of the invention

[0003] The purpose of the utility model is to provide an air compressor with an improved structure, which can solve the technical problems mentioned in the background technology.

[0004] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: an air compressor with an improved structure comprises an air compressor body, the air compressor body is provided with an air inlet and an exhaust port, the air inlet is provided with an air inlet pipe, the exhaust port is provided with an exhaust pipe, an oil tank is connected to the lower side of the gear box of the air compressor body, the oil tank is provided with an oil supply pipe for supplying the oil in the oil tank to the top of the gear box, an oil pressure balance pipe is provided above the oil tank, the lower end of the oil pressure balance pipe is connected to the top space of the oil tank, an oil mist separator is provided at the upper end of the oil pressure balance pipe, an intake pipe is provided on the upper side wall of the oil mist separator, the end of the intake pipe is connected to the suction end of the centrifugal fan, the discharge end of the centrifugal fan is provided with a discharge pipe, and an oil return pipe is provided at the bottom of the oil mist separator, and the end of the oil return pipe is connected to the oil tank.

[0005] Preferably, the oil pressure balance pipe is provided with a positive and negative pressure diaphragm box pressure gauge.

[0006] Preferably, the intake pipe is provided with a pressure relief pipe, a pressure relief valve is provided in the pressure relief pipe, and an air filter assembly is provided at the end of the pressure relief pipe.

[0007] Preferably, the exhaust pipe is connected to the exhaust port via a venturi tube, a first one-way valve is provided at the end of the exhaust pipe, and a gas release pipe is provided in the middle of the exhaust pipe, on which a high-temperature solenoid valve is provided.

[0008] Preferably, a second one-way valve is provided on the air release pipe.

[0009] Preferably, a silencer is provided at the end of the air release pipe.

[0010] Preferably, a safety valve is provided on the exhaust pipe.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model sucks air from the fuel tank through a centrifugal fan, causing the fuel tank to generate negative pressure. When the lubricating oil completes lubrication at each meshing point, under the action of negative pressure, it flows from the gearbox to the fuel tank, avoiding the accumulation of lubricating oil in the gearbox, effectively reducing the mechanical loss of the unit, improving the operating efficiency, and avoiding adverse effects caused by the increase in the temperature of the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a perspective view of one angle of the present utility model.

[0013] Figure 2 is a perspective view of another angle of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0015] As Figure 1 , Figure 2 shown, the present utility model provides an air compressor with an improved structure, including an air compressor main body 1. An air inlet and an air outlet are provided on the air compressor main body 1. An air inlet pipe 2 is provided on the air inlet, and an exhaust pipe 3 is provided on the air outlet. A fuel tank 5 is connected in parallel beside the lower part of the gearbox 4 of the air compressor main body 1. A fuel supply pipe 6 for supplying the oil in the fuel tank 5 to the top of the gearbox 4 is provided on the fuel tank 5. An oil pressure balance pipe 7 is provided above the fuel tank 5. The lower end of the oil pressure balance pipe 7 is connected to the top space of the fuel tank 5. An oil mist separator 8 is provided at the upper end of the oil pressure balance pipe 7. An air suction pipe 9 is provided on the upper side wall of the oil mist separator 8. The end of the air suction pipe 9 is connected to the suction end of a centrifugal fan 10. A discharge pipe 11 is provided at the discharge end of the centrifugal fan 10. A return oil pipe 12 is provided at the bottom of the oil mist separator 8. The end of the return oil pipe 12 is connected to the fuel tank 5.

[0016] When the utility model is in operation, the centrifugal fan 10 extracts air. The air in the fuel tank 5 enters the oil mist separator 8 through the oil pressure balance pipe 7. Since the air contains oil mist, the air and lubricating oil are separated under the action of the oil mist separator 8. The separated clean air enters the centrifugal fan 10 through the air suction pipe 9 and then is discharged through the discharge pipe 11. The separated lubricating oil returns to the fuel tank 5 through the oil return pipe 12. Since the centrifugal fan 10 extracts air from the fuel tank 5, a negative pressure is generated in the fuel tank 5. When the lubricating oil completes lubrication at each meshing point, under the action of the negative pressure, it flows from the gearbox 4 to the fuel tank 5. Part of the lubricating oil in the fuel tank 5 can be sprayed onto the gearbox 4 through the oil supply pipe 6 to provide lubrication and cooling. By extracting air from the fuel tank 5 through the centrifugal fan 10, a negative pressure is generated in the fuel tank 5. When the lubricating oil completes lubrication at each meshing point, under the action of the negative pressure, it flows from the gearbox 4 to the fuel tank 5, avoiding the accumulation of lubricating oil in the gearbox 4, effectively reducing the mechanical loss of the unit, improving the operating efficiency, and avoiding the adverse effects caused by the increase in the lubricating oil temperature.

[0017] Preferably, a positive and negative pressure diaphragm pressure gauge 13 is provided on the oil pressure balance pipe 7 for measuring the negative pressure condition.

[0018] Preferably, a pressure relief pipe 14 is provided on the air suction pipe 9. A pressure relief valve 15 is provided in the pressure relief pipe 14. An air filter assembly 16 is provided at the end of the pressure relief pipe 14. When the negative pressure in the fuel tank 5 is too high, the air in the machine can enter the air suction pipe 9 through the air filter assembly 16 and the pressure relief valve 15, stabilizing the negative pressure within a certain range.

[0019] Preferably, the exhaust pipe 3 is connected to the exhaust port through a Venturi tube 17. A first one-way valve 18 is provided at the end of the exhaust pipe 3. A pressure relief pipe 19 is provided in the middle of the exhaust pipe 3. A high-temperature solenoid valve 20 is provided on the pressure relief pipe 19. When the air compressor main body 1 stops, the first one-way valve 18 can prevent the compressed air from flowing back into the air compressor main body 1 through the exhaust pipe 3, thereby preventing the air compressor main body 1 from reversing. At the same time, the high-temperature solenoid valve 20 opens, and the compressed air in the air compressor main body 1 is discharged through the exhaust pipe 3 and the pressure relief pipe 19 and will not flow back into the air compressor main body 1, further preventing the air compressor main body 1 from reversing.

[0020] Preferably, a second one-way valve 21 is provided on the pressure relief pipe 19. If the high-temperature battery valve 20 fails, the second one-way valve 21 can prevent external air from entering the exhaust pipe 3.

[0021] Preferably, a silencer 22 is provided at the end of the pressure relief pipe 19 to play a silencing role when discharging compressed air.

[0022] Preferably, a safety valve 23 is provided on the exhaust pipe 3. If the compressed air in the exhaust pipe 3 cannot be discharged in time through the air release pipe 19 or the pressure of the compressed air in the exhaust pipe 3 is too high, it can also be discharged through the safety valve 23, making the use safer.

[0023] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples shown and described herein.

Claims

1. An air compressor with improved structure, including an air compressor main body, an air inlet and an air outlet are provided on the air compressor main body, an air inlet pipe is provided on the air inlet, and an exhaust pipe is provided on the air outlet, and it is characterized in that: A fuel tank is connected beside the lower part of the gearbox of the air compressor main body. An oil supply pipe for supplying the oil in the fuel tank to the top of the gearbox is provided on the fuel tank. An oil pressure balance pipe is provided above the fuel tank. The lower end of the oil pressure balance pipe is connected to the top space of the fuel tank. An oil mist separator is provided at the upper end of the oil pressure balance pipe. An air suction pipe is provided on the upper side wall of the oil mist separator. The end of the air suction pipe is connected to the suction end of a centrifugal fan. A discharge pipe is provided at the discharge end of the centrifugal fan. A return oil pipe is provided at the bottom of the oil mist separator. The end of the return oil pipe is connected to the fuel tank.

2. The air compressor with the structural improvement according to claim 1, characterized in that: A positive and negative pressure diaphragm pressure gauge is provided on the oil pressure balance pipe.

3. The air compressor with the structural improvement according to claim 2, wherein: A pressure relief pipe is provided on the air suction pipe. A pressure relief valve is provided in the pressure relief pipe. An air filter assembly is provided at the end of the pressure relief pipe.

4. The air compressor with the structural improvement according to any one of claims 1-3, characterized in that: The exhaust pipe is connected to the exhaust port through a Venturi tube. A first one-way valve is provided at the end of the exhaust pipe. A pressure relief pipe is provided in the middle of the exhaust pipe. A high-temperature solenoid valve is provided on the pressure relief pipe.

5. The air compressor with the structural improvement according to claim 4, characterized in that: A second one-way valve is provided on the pressure relief pipe.

6. The air compressor with the structural improvement according to claim 4, wherein: A silencer is provided at the end of the pressure relief pipe.

7. The air compressor with the structural improvement according to claim 4, wherein: A safety valve is provided on the exhaust pipe.

Images