A circulating cooling self-cleaning controllable oil vacuum pump

Abstract

The present invention relates to a circulating cooling self-cleaning controllable oil vacuum pump, comprising a vacuum pump, a cooling liquid channel provided in the inner wall of the vacuum pump, the inlet and outlet of the cooling liquid channel being respectively connected to a vacuum pump water inlet pipe and a vacuum pump water outlet pipe, the vacuum pump water inlet pipe being connected to a circulating water pump, a water pump water inlet pipe, and a radiator, a cooling fan being provided on one side of the radiator, the vacuum pump water outlet pipe being connected to an auxiliary water tank and a radiator, the vacuum pump being connected to a cleaning liquid inlet pump pipe, a cleaning liquid solenoid valve, a cleaning tank water outlet pipe, and a cleaning tank, an oil pot being fixed on the outside of the vacuum pump, and the bottom of the oil pot being connected to a gear box. The present invention cools by a circulating cooling device, has a better cooling effect, can improve the durability of the vacuum pump, simplifies the steps of conventional air cooling or external water circulating cooling, can perform self-cleaning each time the vacuum pump is shut down, effectively reduces errors caused by human factors, and is more convenient and safer than the traditional method of directly adding oil to the oil tank by using an external oil pot.

Description

Technical Field

[0001] The invention belongs to the technical field of pumps, and in particular relates to a circulating cooling, self-cleaning, controllable oil vacuum pump. Background Art

[0002] Vacuum pumps are widely used in industries like industry, healthcare, and scientific experimentation. Their durability is crucial during daily use, but all commercially available vacuum pumps, including claw pumps, screw pumps, and rotary vane pumps, utilize external circulating water cooling or direct air cooling. One of the main reasons for the poor durability of vacuum pumps is improper cooling methods, which can lead to excessively high chamber temperatures and a series of overheating issues, resulting in frequent product replacement and repair. Between the time a vacuum pump is shut down and the next time it is used again, the pump can easily become stuck due to the cooling of the material, making restarting difficult.

[0003] During operation, air cooling can lead to elevated pump temperatures, posing risks to both material durability and operator safety. Using external water cooling reduces the product's usability, particularly in areas where external water access is difficult. Furthermore, external piping becomes complex, costly, and wastewater disposal cumbersome. To prevent the pump from becoming stuck, workers typically manually closed the air inlet valve, opened the cleaning fluid valve, and then started the vacuum pump for manual cleaning. This cumbersome process, with limited margin for error, made it easy to forget to clean the pump, leading to a stuck pump chamber.

[0004] In addition, the gear box of the current vacuum pump has a small internal space and stores less gear oil, so it is often short of oil. Therefore, an exposed oil window is generally used to observe the gear oil level to determine whether oil needs to be added. The oil window is easily contaminated, resulting in poor visibility, making daily maintenance and observation more difficult. Summary of the Invention

[0005] The present invention aims to provide a circulating cooling, self-cleaning, controllable oil vacuum pump that effectively avoids the drawbacks of conventional air cooling or external water circulation. It is easy to carry during use, unaffected by geographical or other factors, and exhibits excellent compatibility. The self-cleaning function effectively reduces errors caused by human error, and the solenoid valve control system offers high fault tolerance and excellent performance. Furthermore, the gear oil level can be monitored.

[0006] The present invention relates to a circulating cooling self-cleaning controllable oil vacuum pump, comprising a vacuum pump, a cooling liquid channel being provided in the inner wall of the vacuum pump, the inlet and outlet of the cooling liquid channel being respectively connected to a vacuum pump water inlet pipe and a vacuum pump water outlet pipe, the vacuum pump water inlet pipe being connected to a circulating water pump, the circulating water pump being connected to a water pump water inlet pipe, the water pump water inlet pipe being connected to a radiator, a cooling fan being provided on one side of the radiator, the vacuum pump water outlet pipe being connected to a tee pipe, one end of the tee pipe being connected to an auxiliary water tank, the other end of the tee pipe being connected to the auxiliary water tank water outlet pipe, the auxiliary water tank water outlet pipe being connected to the radiator, one end of the cavity of the vacuum pump being connected to a cleaning liquid inlet pump pipe, the cleaning liquid inlet pump pipe being connected to a cleaning Liquid solenoid valve, the cleaning liquid solenoid valve is connected to the cleaning tank outlet pipe, the cleaning tank outlet pipe is connected to the cleaning tank, the vacuum pump is connected to the motor, the air inlet solenoid valve is provided on the air inlet pipe of the vacuum pump, an oil pot is fixed on the outside of the vacuum pump, an oil outlet pipe is fixed on the bottom of the oil pot, the other end of the oil outlet pipe is connected to the gear box, the upper part of the gear box is connected to a pressure relief pipe, the other end of the pressure relief pipe is connected to the top of the oil pot, an oil filling port is provided on the top of the oil pot, a closing cover is provided on the oil filling port, a liquid level sensor is also provided on the bottom inside the oil pot, the liquid level sensor, the air inlet solenoid valve, the vacuum pump, the motor and the cleaning liquid solenoid valve are connected to a PLC controller.

[0007] The coolant used in the auxiliary water tank is a mixture of 50% ethylene glycol and 50% water, which has a good cooling effect.

[0008] The motor output end is fixed with a pulley 1, which is connected to a pulley 2 via a belt, and the pulley 2 is connected to the main shaft of the vacuum pump. When the vacuum pump is stopped, the motor can drive the vacuum pump to rotate at a low speed to suck cleaning water to clean the inner cavity of the vacuum pump.

[0009] The bottom of the oil pot is flush with the bottom of the gear box, which better reflects the oil level in the gear pump.

[0010] A drain pipe is provided on one side of the bottom of the vacuum pump cavity, and a cleaning liquid discharge solenoid valve is provided on the drain pipe, which is convenient for emptying the cleaning waste liquid in the vacuum pump during cleaning.

[0011] The vacuum pump is provided with an air outlet pipe, and the air outlet pipe is provided with an air outlet electromagnetic valve.

[0012] A tee is fixed to the top of the oiler. The left end of the tee is connected to the pressure relief pipe, and the lower end of the tee is connected to the oiler. A closure cap is threaded onto the top of the tee, facilitating oil filling. A small pressure relief hole is located on the oil pipe at the top of the tee.

[0013] The bottom of the vacuum pump is fixed with a bottom plate, on which the cooling fan, radiator and circulating water pump are fixed. The bottom of the bottom plate is provided with running wheels for easy movement.

[0014] The upper part of the cooling fan is fixedly connected to a PLC screen all-in-one machine, which is connected to the PLC controller. There is an air switch above the PLC controller. The monitoring status can be observed and operated through the PLC screen all-in-one machine.

[0015] Liquid level sensor 2 and liquid level sensor 3 are respectively provided at the bottom of the auxiliary water tank and the cleaning tank. Liquid level sensor 2 and liquid level sensor 3 are connected to the PLC controller. The PLC controller is connected to an alarm, which can monitor the liquid level in the auxiliary water tank and the cleaning tank. When there is a lack of liquid, it reminds you to replenish the liquid in time, which is safer.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] Cooling is carried out through a circulating cooling device, which has a better cooling effect, can improve the durability of the vacuum pump, reduce the failure rate caused by excessive temperature, simplify the previous air cooling or external water circulation cooling steps, enhance the overall competitiveness of the product, and add performance highlights among products of the same level in the market; each time the vacuum pump stops, it can perform self-cleaning, effectively reducing errors caused by human factors, and it is fully controlled by the solenoid valve with high fault tolerance and good effect. More gear oil can be stored and replenished through the external oil pot. In addition, when there is gas in the gear box, the pressure relief pipe can flow from the pressure relief pipe to the top of the oil pot, and then press the gear oil into the gear box for replenishment, which is more convenient and safer than the traditional direct addition to the oil tank; the oil pot adopts a liquid level alarm to reduce the adverse effects of errors caused by manual observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0020] Figure 3 It is a left-side structural schematic diagram of the present invention;

[0021] Figure 4 It is a right side structural schematic diagram of the present invention;

[0022] Figure 5 It is a schematic diagram of the front three-dimensional structure of the present invention;

[0023] Figure 6 It is a schematic diagram of the rear three-dimensional structure of the present invention;

[0024] In the figure: 1. Cooling fan, 2. Radiator, 3. Auxiliary water tank, 4. Motor, 5. Air inlet solenoid valve, 6. Cleaning fluid solenoid valve, 7. Vacuum pump, 8. Cleaning tank, 9. Circulating water pump, 10. Auxiliary water tank outlet pipe, 11. Water pump inlet pipe, 12. Vacuum pump outlet pipe, 13. Vacuum pump inlet pipe, 14. Cleaning tank outlet pipe, 15. Cleaning fluid inlet pipe, 16. Air outlet solenoid valve, 17. Discharge solenoid valve, 18. Pressure relief pipe, 19. Oil can, 20. Air inlet pipe, 21. Air outlet pipe, 22. Drain pipe, 23. PLC screen all-in-one machine, 24. Air switch, 25. PLC controller, 26. Liquid level sensor 2, 27. Liquid level sensor 3, 28. Liquid level sensor 1, 29. Travel wheel, 30. Bottom plate. DETAILED DESCRIPTION

[0025] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] like Figures 1 to 6 As shown, the present invention is a circulating cooling self-cleaning controllable oil vacuum pump, comprising a vacuum pump 7, a cooling liquid channel is provided in the inner wall of the vacuum pump 7, the inlet and outlet of the cooling liquid channel are respectively connected to a vacuum pump water inlet pipe 13 and a vacuum pump water outlet pipe 12, the vacuum pump water inlet pipe 13 is connected to a circulating water pump 9, the circulating water pump 9 is connected to a water pump water inlet pipe 11, the water pump water inlet pipe 11 is connected to a radiator 2, a cooling fan 1 is provided on one side of the radiator 2, the vacuum pump water outlet pipe 12 is connected to a tee pipe 1, one end of the tee pipe 1 is connected to an auxiliary water tank 3, the other end of the tee pipe 1 is connected to an auxiliary water tank water outlet pipe 10, the auxiliary water tank water outlet pipe 10 is connected to the radiator 2, one end of the cavity of the vacuum pump 7 is connected to a cleaning liquid inlet pump pipe 15, and the cleaning liquid inlet pump pipe 15 is connected to a cleaning liquid The solenoid valve 6 and the cleaning liquid solenoid valve 6 are connected to the cleaning tank outlet pipe 14, the cleaning tank outlet pipe 14 is connected to the cleaning tank 8, the vacuum pump 7 is connected to the motor 4, and the air inlet solenoid valve 5 is provided on the air inlet pipe 20 of the vacuum pump 7. An oil pot 19 is fixed to the outside of the vacuum pump 7, and an oil outlet pipe is fixed to the bottom of the oil pot 19. The other end of the oil outlet pipe is connected to the gear box, and the upper part of the gear box is connected to the pressure relief pipe 18. The other end of the pressure relief pipe 18 is connected to the top of the oil pot 19. An oil filling port is provided on the top of the oil pot 19, and a closing cover is provided on the oil filling port. A liquid level sensor 28 is provided at the bottom inside the oil pot 19. The liquid level sensor 28, the air inlet solenoid valve 5, the vacuum pump 7, the motor 4 and the cleaning liquid solenoid valve 6 are connected to a PLC controller 25.

[0027] The coolant used in the auxiliary water tank 3 is a mixture of 50% ethylene glycol and 50% water.

[0028] A pulley 1 is fixed to the output end of the motor 4 , the pulley 1 is connected to a pulley 2 via a belt, and the pulley 2 is connected to the main shaft of the vacuum pump 7 .

[0029] The inner bottom of the oil pot 19 is flush with the inner bottom of the gear box.

[0030] A liquid discharge pipe 22 is provided on one side of the bottom of the cavity of the vacuum pump 7 , and a cleaning liquid discharge solenoid valve 17 is provided on the liquid discharge pipe 22 .

[0031] An air outlet pipe 21 is provided on the vacuum pump 7 , and an air outlet solenoid valve 16 is provided on the air outlet pipe 21 .

[0032] A tee pipe 2 is fixed on the top of the oil pot 19, the left end of the tee pipe 2 is connected to the pressure relief pipe 18, the lower end of the tee pipe 2 is connected to the oil pot 19, and the closing cover is threadedly connected to the top of the tee pipe 2.

[0033] A bottom plate 30 is fixed to the bottom of the vacuum pump 7 , and the cooling fan 1 , the radiator 2 and the circulating water pump 9 are all fixed on the bottom plate 30 . A running wheel 29 is provided at the bottom of the bottom plate 30 .

[0034] A PLC screen all-in-one 23 is fixedly connected to the upper part of the cooling fan 1 . The PLC screen all-in-one 23 is connected to a PLC controller 25 . An air switch 24 is provided above the PLC controller 25 .

[0035] A second liquid level sensor 26 and a third liquid level sensor 27 are respectively provided at the bottom of the auxiliary water tank 3 and the cleaning tank 8. The second liquid level sensor 26 and the third liquid level sensor 27 are connected to a PLC controller 25, and the PLC controller 25 is connected to an alarm.

[0036] During cooling operation, the coolant flows from the auxiliary water tank 3 through the auxiliary water tank outlet pipe 10 into the radiator 2, then enters the circulating water pump 9 through the water pump inlet pipe 11, and enters the cooling liquid channel in the vacuum pump 7 through the vacuum pump inlet pipe 13 to cool the vacuum pump 7. After cooling, the coolant exits through the vacuum pump outlet pipe 12 and returns to the radiator 2. It is dissipated by the cooling fan 1, and the coolant after dissipation enters the circulating water pump 9 through the water pump inlet pipe 11, and the cooling cycle repeats. The temperature of the cooling pump cavity is then repeatedly cooled. During cooling, the liquid level sensor 26 monitors the coolant level in the auxiliary water tank 3. When the level is too low, a signal is sent to the PLC controller 25, which controls an alarm and replenishes the coolant in time.

[0037] During cleaning work, each time the vacuum pump 7 is stopped, the PLC controller 25 controls the air inlet solenoid valve 5 to close, the cleaning liquid solenoid valve 6, the discharge solenoid valve 17 and the air outlet solenoid valve 16 to open, and the motor 4 runs at a low speed to extract the cleaning liquid in the cleaning tank 8 into the vacuum pump 7 for cleaning. The cleaned liquid is discharged from the air outlet pipe 21. It is simple and easy. The liquid level sensor 27 monitors the cleaning liquid level in the cleaning tank 8. When the liquid level is too low, it sends a signal to the PLC controller 25 to control the alarm and replenish the cleaning liquid in time.

[0038] When the oil pot 19 is working, the oil in it enters the gear box through the oil outlet pipe, replenishing the gear fluid in the gear box in time. In addition, when there is gas in the gear box, the pressure relief pipe 18 can flow into the top of the oil pot 19 from the pressure relief pipe 18, and then press the gear oil into the gear box for replenishment. When the liquid level sensor 28 monitors the gear oil level in the oil pot 19, when the liquid level is too low, it sends a signal to the PLC controller 25 to control the alarm and replenish the gear oil in time.

[0039] To sum up, the present invention uses a circulating cooling device for cooling, which has a better cooling effect, can improve the durability of the vacuum pump, reduce the failure rate caused by excessive temperature, simplify the previous air cooling or external water circulation cooling steps, enhance the overall competitiveness of the product, and add performance highlights among products of the same level in the market; each time the vacuum pump stops, it can perform self-cleaning, effectively reducing errors caused by human factors, and it is fully controlled by the solenoid valve with high fault tolerance and good effect. More gear oil can be stored and replenished through the external oil pot. In addition, when there is gas in the gear box, the pressure relief pipe can flow from the pressure relief pipe to the top of the oil pot, and then press the gear oil into the gear box for replenishment, which is more convenient and safer than the traditional direct addition to the oil tank; the oil pot adopts a liquid level alarm to reduce the adverse effects of errors caused by manual observation.

[0040] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0041] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

Claims

1. A circulating cooling self-cleaning controllable oil vacuum pump, comprising a vacuum pump (7), characterized in that: A cooling liquid channel is provided in the inner wall of the vacuum pump (7), and the inlet and outlet of the cooling liquid channel are respectively connected to a vacuum pump water inlet pipe (13) and a vacuum pump water outlet pipe (12), the vacuum pump water inlet pipe (13) is connected to a circulating water pump (9), the circulating water pump (9) is connected to a water pump water inlet pipe (11), the water pump water inlet pipe (11) is connected to a radiator (2), a cooling fan (1) is provided on one side of the radiator (2), the vacuum pump water outlet pipe (12) is connected to a three-way pipe, one end of the three-way pipe is connected to an auxiliary water tank (3), the other end of the three-way pipe is connected to the auxiliary water tank water outlet pipe (10), the auxiliary water tank water outlet pipe (10) is connected to the radiator (2), one end of the cavity of the vacuum pump (7) is connected to a cleaning liquid inlet pump pipe (15), the cleaning liquid inlet pump pipe (15 ) is connected to a cleaning liquid solenoid valve (6), the cleaning liquid solenoid valve (6) is connected to a cleaning box outlet pipe (14), the cleaning box outlet pipe (14) is connected to a cleaning box (8), the vacuum pump (7) is connected to a motor (4), an air inlet solenoid valve (5) is provided on the air inlet pipe (20) of the vacuum pump (7), an oil pot (19) is fixed on the outside of the vacuum pump (7), an oil outlet pipe is fixed on the bottom of the oil pot (19), the other end of the oil outlet pipe is connected to a gear box, the upper part of the gear box is connected to a pressure relief pipe (18), the other end of the pressure relief pipe (18) is connected to the top of the oil pot (19), an oil filling port is provided on the top of the oil pot (19), a closing cover is provided on the oil filling port, a liquid level sensor (28) is provided on the bottom inside the oil pot (19), the liquid level sensor The sensor (28), the air inlet electromagnetic valve (5), the vacuum pump (7), the motor (4) and the cleaning liquid electromagnetic valve (6) are connected to the PLC controller (25); the coolant used in the auxiliary water tank (3) is a mixture of 50% ethylene glycol and 50% water; the inner bottom of the oil pot (19) is flush with the inner bottom of the gear box; a three-way pipe (2) is fixed on the top of the oil pot (19), the left end of the three-way pipe (2) is connected to the pressure relief pipe (18), the lower end of the three-way pipe (2) is connected to the oil pot (19), and the closing cover is threadedly connected to the top of the three-way pipe (2); the upper part of the cooling fan (1) is fixedly connected to the PLC screen all-in-one (23), the PLC screen all-in-one (23) is connected to the PLC controller (25), and the PLC controller (25) is provided above Air switch (24); liquid level sensor 2 (26) and liquid level sensor 3 (27) are respectively provided at the bottom of the auxiliary water tank (3) and the cleaning tank (8); liquid level sensor 2 (26) and liquid level sensor 3 (27) are connected to the PLC controller (25); the PLC controller (25) is connected to an alarm; a drain pipe (22) is provided on one side of the bottom of the cavity of the vacuum pump (7); a cleaning liquid discharge solenoid valve (17) is provided on the drain pipe (22); an air outlet pipe (21) is provided on the vacuum pump (7); an air outlet solenoid valve (16) is provided on the air outlet pipe (21); a pulley 1 is fixed to the output end of the motor (4); the pulley 1 is connected to the pulley 2 through a belt; the pulley 2 is connected to the main shaft of the vacuum pump (7);A bottom plate (30) is fixed to the bottom of the vacuum pump (7), and the cooling fan (1), the radiator (2) and the circulating water pump (9) are all fixed on the bottom plate (30). A running wheel (29) is provided at the bottom of the bottom plate (30).

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