Oil supplementing and changing system of vacuum pump

Abstract

The utility model belongs to the technical field of vacuum pumps, and particularly relates to an oil supplementing and changing system for a vacuum pump, which is characterized in that a balance oil delivery tank is arranged on one side of the vacuum pump or a vacuum pump group, a first vent is arranged at the top of the balance oil delivery tank, a first oil discharge outlet is arranged at the bottom of the balance oil delivery tank, and a first liquid level transmitter is arranged on one side of the balance oil delivery tank; a second air vent is formed in the top of an oil tank of the vacuum pump or the vacuum pump set and connected with a first valve, the first valve is communicated with the balance oil conveying tank through a pipeline, and a second oil discharge outlet is formed in the bottom of the oil tank of the vacuum pump or the vacuum pump set and connected with a second valve and a third valve. The second valve is connected with the waste oil tank through a pipeline, and the third valve is connected with the first oil outlet through a pipeline. According to the utility model, a large amount of labor cost is saved, and the problem that parts of the vacuum pump are abraded due to lack of lubricating oil or deterioration of the lubricating oil caused by mistakes and omissions of manual operation is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum pumps, in particular to an oil replenishing and changing system for a vacuum pump. Background Art

[0002] Roots vacuum pumps or screw vacuum pumps are typically oil-lubricated, with oil tanks located on the front and rear end covers. Components such as the bearings, transmission gears, and mechanical seals require lubrication and cooling with lubricating oil, which needs to be regularly replaced or replenished. Currently, manual inspection of the oil level and quality is the primary way to determine whether the lubricant needs to be replenished or replaced. This presents the following challenges: 1. Manual recording and determination of oil replenishment or replacement times is required, which is not only cumbersome but also prone to omissions when operating a large number of units. 2. The high installation height of vacuum pumps makes oil changes challenging and dangerous. 3. Oil replenishment or replacement cannot be performed while the equipment is running and can only be performed while the equipment is shut down. If the oil level or quality of a vacuum pump deteriorates, stopping that pump can paralyze the entire vacuum system, severely impacting normal production. Summary of the Invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention proposes a vacuum pump oil replenishment and replacement system, which saves a lot of manpower costs and avoids the problem of manual operation errors, which may cause the vacuum pump to lack lubricating oil or lubricating oil to deteriorate, resulting in the wear of vacuum pump parts. The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0004] A vacuum pump oil replenishment and replacement system is provided, wherein a balancing oil tank is provided on one side of a vacuum pump or a vacuum pump group, a first air vent is provided on the top of the balancing oil tank, a first oil drain port is provided on the bottom of the balancing oil tank, a first liquid level transmitter is provided on one side of the balancing oil tank, a second air vent is provided on the top of the oil tank of the vacuum pump or the vacuum pump group, the second air vent is connected to a first valve, the first valve is connected to the balancing oil tank through a pipeline, a second oil drain port is provided at the bottom of the oil tank of the vacuum pump or the vacuum pump group, the second oil drain port is connected to a second valve and a third valve respectively, the second valve is connected to a waste oil tank through a pipeline, and the third valve is connected to the first oil drain port through a pipeline.

[0005] Furthermore, the oil storage tank is provided with a discharge port, an oil replenishment port, a third vent and a second liquid level transmitter. The discharge port is connected to the fourth valve, the fourth valve is connected to the oil pump, and the oil pump is connected to the balancing oil tank through a pipeline.

[0006] Furthermore, the normal oil level of the balance oil tank is collinear with the normal oil level of the vacuum pump or the vacuum pump group.

[0007] Specifically, the specifications of each vacuum pump in the vacuum pump group are the same or similar.

[0008] Specifically, when the vacuum pump or the vacuum pump group is operating normally, the first valve, the second valve and the third valve are all in a closed state.

[0009] Preferably, a control system is further included, which is connected to the first valve, the second valve, the third valve, the first liquid level transmitter, the second liquid level transmitter and the oil pump respectively.

[0010] The utility model saves a lot of manpower costs and avoids the problem that errors and omissions in human operation may cause the vacuum pump to lack lubricating oil or the lubricating oil to deteriorate, resulting in wear of vacuum pump parts; and can realize oil change without stopping the vacuum pump, effectively solving the major problem that the vacuum pump oil change may cause the entire production system to stop working. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model;

[0012] Figure 2 This is a structural diagram of the second embodiment of the present utility model. DETAILED DESCRIPTION

[0013] Example 1

[0014] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention, as shown in FIG. Figure 1 As shown, a vacuum pump oil replenishment and replacement system is provided, wherein a balancing oil tank 1 is provided on one side of the vacuum pump 2, a first air vent 1.1 is provided on the top of the balancing oil tank 1, a first oil drain port 1.2 is provided on the bottom of the balancing oil tank 1, a first liquid level transmitter 1.3 is provided on one side of the balancing oil tank 1, a second air vent 3.1 is provided on the top of the oil tank 3 of the vacuum pump 2, the second air vent 3.1 is connected to the first valve 4, the first valve 4 is connected to the balancing oil tank 1 through a pipeline, a second oil drain port 3.2 is provided at the bottom of the oil tank 3 of the vacuum pump 2, the second oil drain port 3.2 is connected to the second valve 5 and the third valve 6 respectively, the second valve 5 is connected to the waste oil tank 7 through a pipeline, and the third valve 6 is connected to the first oil drain port 1.2 through a pipeline.

[0015] The purpose of the second air vent 3.1 of the utility model being connected to the balanced oil tank 1 through the first valve 4 is that, as the increase or decrease of oil will cause the space occupied by the gas in the oil tank to change, thereby causing the gas pressure to change, and the gas pressure change will make it impossible for oil to be discharged or flowed in, the air vent can keep the gas pressure between the oil tanks the same; and a first air vent 1.1 is also provided in the balanced oil tank 1, and its function is to connect the first vent 1.1 to a designated place when the gas pumped by the vacuum pump is not allowed to be discharged into the atmosphere.

[0016] The oil storage tank 8 is provided with a discharge port 8.1, an oil replenishment port 8.2, a third vent 8.3 and a second liquid level transmitter 8.4. The discharge port 8.1 is connected to a fourth valve 9, which is connected to an oil pump 10. The oil pump 10 is connected to the balancing oil tank 1 through a pipeline.

[0017] The normal oil level of the balance oil tank 1 is collinear with the normal oil level of the vacuum pump 2. When the vacuum pump 2 is operating normally, the first valve 4, the second valve 5 and the third valve 6 are all in a closed state. The system also includes a control system, which is respectively connected to the first valve 4, the second valve 5, the third valve 6, the first liquid level transmitter 1.3, the second liquid level transmitter 8.4 and the oil pump 10.

[0018] Example 2

[0019] Figure 2 This is a schematic diagram of the structure of the second embodiment of the present invention, as shown in FIG. Figure 2 As shown, Example 2 is a vacuum pump group consisting of three vacuum pumps connected in parallel, namely a first vacuum pump 2-1, a second vacuum pump 2-2, and a third vacuum pump 2-3. Their corresponding oil tanks are the first oil tank 3-1, the second oil tank 3-2, and the third oil tank 3-3, respectively. The specifications of the first vacuum pump 2-1, the second vacuum pump 2-2, and the third vacuum pump 2-3 are the same or similar. "Similar" here means that the outer dimensions of the vacuum pumps are the same or not much different. The other configurations of Example 2 are the same as those of Example 1 and are not further described here.

[0020] When the utility model is used, the oil replenishment and oil change cycles are pre-set, and the control system automatically calculates the oil replenishment and oil change dates; when entering the oil replenishment mode, the operator selects the pump position number for oil replenishment, and the control system controls the first valve and the third valve to open, and the second valve remains closed. At this time, the oil tank of the vacuum pump is connected to the balancing oil tank, and the oil in the balancing oil tank automatically flows into the oil tank of the vacuum pump. After the oil replenishment is completed, the control system controls the first valve and the third valve to close, and the oil replenishment calculation starting point is reset to zero.

[0021] When entering the oil change mode, the operator selects the pump position number that needs to be changed, and the control system controls the first valve and the second valve to open, and the third valve remains closed. At this time, the oil in the vacuum pump tank will automatically be discharged into the waste oil tank, and the oil discharge time is T1; after the oil discharge is completed, the control system controls the first valve and the third valve to open, and the second valve remains closed. At this time, the vacuum pump tank is connected to the balancing oil tank, and the oil in the balancing oil tank will automatically flow into the vacuum pump tank until the oil levels of the two are the same, and the oil replenishment time is also T1. After the oil replenishment is completed, the control system controls the first valve and the third valve to close, and the oil change calculation starting point is reset to zero.

[0022] When changing oil without stopping the machine, the operator selects the pump position number that needs to be changed, and the control system controls the first valve and the second valve to open, and the third valve to remain closed. At this time, the oil in the vacuum pump tank will automatically be discharged into the waste oil tank, and the oil discharge cycle is T2; after the oil discharge cycle is reached, the control system controls the first valve and the third valve to open, and the second valve to remain closed. At this time, the vacuum pump tank is connected to the balancing oil tank, and the oil in the balancing oil tank will automatically flow into the vacuum pump tank, and the oil replenishment time is also T2; after an interval of a few minutes, the oil change operation is repeated, and it ends after repeating 10-30 times. The control system controls the first valve and the third valve to close, and the oil change calculation starting point is reset to zero.

[0023] During the oil replenishment or oil change process, when the first liquid level transmitter detects that the oil level in the balancing oil tank is too low, it sends a signal to the control system. The control system controls the oil pump to start and pump the oil from the oil storage tank into the balancing oil tank until the oil level in the balancing oil tank returns to normal. The control system controls the oil pump to stop.

[0024] In short, the utility model saves a lot of manpower costs and avoids errors and omissions in human operation, which may cause the vacuum pump to lack lubricating oil or the lubricating oil to deteriorate, resulting in wear of vacuum pump parts; when maintaining the equipment, there is no need to climb to a high place to check the equipment and replace the lubricating oil, which greatly improves the safety of equipment maintenance; and the vacuum pump can be changed without stopping the oil, which effectively solves the major problem that changing the vacuum pump oil may cause the entire production system to stop working.

Claims

1. A vacuum pump oil replenishment and replacement system, characterized in that: A balancing oil tank is provided on one side of the vacuum pump or vacuum pump group, a first air vent is provided on the top of the balancing oil tank, a first oil drain port is provided at the bottom of the balancing oil tank, a first liquid level transmitter is provided on one side of the balancing oil tank, a second air vent is provided on the top of the oil tank of the vacuum pump or vacuum pump group, the second air vent is connected to a first valve, the first valve is connected to the balancing oil tank through a pipeline, a second oil drain port is provided at the bottom of the oil tank of the vacuum pump or vacuum pump group, the second oil drain port is connected to a second valve and a third valve respectively, the second valve is connected to a waste oil tank through a pipeline, and the third valve is connected to the first oil drain port through a pipeline.

2. The vacuum pump oil replenishment and replacement system according to claim 1, characterized in that: It also includes an oil storage tank, which is provided with a discharge port, an oil replenishment port, a third air vent and a second liquid level transmitter. The discharge port is connected to a fourth valve, the fourth valve is connected to an oil pump, and the oil pump is connected to a balancing oil tank through a pipeline.

3. The vacuum pump oil replenishment and replacement system according to claim 1, characterized in that: The normal oil level of the balancing oil tank is on the same line as the normal oil level of the vacuum pump or the vacuum pump group.

4. The vacuum pump oil replenishment and replacement system according to claim 1, characterized in that: The specifications of each vacuum pump in the vacuum pump group are the same or similar.

5. The vacuum pump oil replenishment and replacement system according to claim 1, characterized in that: When the vacuum pump or vacuum pump group is operating normally, the first valve, the second valve and the third valve are all in a closed state.

6. The vacuum pump oil replenishment and replacement system according to any one of claims 1 to 5, characterized in that: It also includes a control system, which is connected to the first valve, the second valve, the third valve, the first liquid level transmitter, the second liquid level transmitter and the oil pump respectively.

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