Vacuum pump oil circulating device

Abstract

The utility model belongs to the technical field of oil circulation, and particularly relates to a vacuum pump oil circulation device which comprises a vacuum pump host, the rear end of the vacuum pump host is connected with a small oil tank through a pipeline, and the front lower end of the vacuum pump host is provided with a large oil tank. Cold water enters the heat dissipation guide pipe along the inlet and outlet port to absorb heat of lubricating oil in the large oil tank, the heat dissipation guide pipe absorbs the heat of the lubricating oil to reduce the content of oxide impurities generated by oxidation of the lubricating oil, and the constant-pressure pipe is used for balancing oil pressure and air pressure in the large oil tank and the small oil tank so that the lubricating oil can flow directionally. The refrigeration effect and the heat dissipation capacity of the vacuum pump main machine are improved, and it is guaranteed that the vacuum pump main machine cannot break down due to the too high temperature in the long-time operation process, and lubricating oil flows back into the vacuum pump main machine from the interior of the large oil tank through the oil suction pipe to be recycled. The problem that oil liquid of an existing vacuum pump oil liquid circulating device is prone to high temperature to be oxidized to form impurities is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil circulation, and particularly relates to a vacuum pump oil circulation device. Background Art

[0002] A vacuum pump refers to a device or equipment that evacuates a container to be evacuated by mechanical, physical, chemical, or physical-chemical methods to obtain a vacuum. Generally speaking, a vacuum pump is a device that improves, generates, and maintains a vacuum in a closed space by various methods. The mechanical components of a vacuum pump (such as structures like bearings, screws, holes, cavities, grooves, etc.) need to use lubricating oil for cooling, rust prevention, lubrication, and sealing to reduce wear and vibration and improve assembly performance.

[0003] Since the oil will absorb the heat of the vacuum pump and heat up during the circulating flow process, the high temperature will cause the oil to oxidize and deteriorate to generate oxide impurities. The oxide impurities are mixed in the oil, which affects the chemical properties of the oil. At the same time, the oxide impurities will enter the interior of the vacuum pump along with the oil flow. The oxide impurities reduce the effects of the oil on cooling, rust prevention, lubrication, and sealing of the vacuum pump, and cause damage to the interior of the vacuum pump by the oxides. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and solve the problem that the oil of the existing vacuum pump oil circulation device is prone to high temperature, resulting in oxidation and formation of impurities.

[0005] The technical solution adopted by the utility model to solve its technical problem is: a vacuum pump oil circulation device, including a vacuum pump main body, the rear end of the vacuum pump main body is connected with a small oil tank through a pipeline, and a large oil tank is arranged at the front lower end of the vacuum pump main body;

[0006] A heat dissipation conduit is inserted into the bottom end inside the large oil tank, and a pair of cold water inlet and outlet ports are arranged inside the heat dissipation conduit;

[0007] A constant pressure pipe and an oil drain pipe are respectively connected to the left and right sides between the large oil tank and the small oil tank through flanges, and a suction pipe is connected between the large oil tank and the vacuum pump main body through a flange;

[0008] The top end inside the large oil tank is detachably connected with a filter that is in communication with the inside of the suction pipe, and a plurality of fine holes are formed on the outer surface of the filter.

[0009] Specifically, a bracket arranged at the rear end of the large oil tank is fixedly connected to the lower end of the vacuum pump main body, and the large oil tank is fixedly connected to the front end of the bracket.

[0010] Specifically, both left and right ends of the large fuel tank are detachably connected with end caps. The left and right ends of the heat dissipation conduit are respectively detachably connected with the inner ends of the adjacent end caps, and the outer end of the cold water inlet and outlet port penetrates outwards through the outer end of the adjacent end cap.

[0011] Specifically, an oil sight glass is installed on the upper part of the end cap. The oil sight glasses are located on the upper left and right sides of the heat dissipation conduit, and the cold water inlet and outlet port is located below the oil sight glass.

[0012] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows:

[0013] The lubricating oil flowing inside the vacuum pump main unit will flow into the small fuel tank. The small fuel tank temporarily stores the lubricating oil. A filter element is built inside the small fuel tank to initially filter the lubricating oil to reduce the impurity content of the lubricating oil flowing into the large fuel tank. The drain pipe is used to drain the lubricating oil inside the small fuel tank into the large fuel tank. The lubricating oil inside the large fuel tank is further filtered by the filter to remove oxide impurities. The outer end of the cold water inlet and outlet port penetrates outwards through the outer end of the adjacent end cap, which is convenient for connecting with an external chiller. A pair of cold water inlet and outlet ports are arranged on the outer surface of one end of the heat dissipation conduit to connect with the external chiller, which can provide a cooling medium for the inside of the large fuel tank. The cold water enters the heat dissipation conduit through the inlet and outlet ports to absorb the heat of the lubricating oil inside the large fuel tank. The heat dissipation conduit absorbs the heat of the lubricating oil to reduce the content of oxide impurities generated by the oxidation of the lubricating oil. The constant pressure pipe is used to balance the oil pressure and air pressure inside the large fuel tank and the small fuel tank to facilitate the directional flow of the lubricating oil, improve the refrigeration effect and heat dissipation capacity of the vacuum pump main unit, ensure that the vacuum pump main unit will not malfunction due to excessive temperature during long-term operation, and rely on the suction pipe to flow the lubricating oil back into the vacuum pump main unit from inside the large fuel tank for recycling. Description of the Drawings

[0014] Figure 1 It is the right view of the overall external structure of the present utility model;

[0015] Figure 2 It is the front view of the overall external structure of the present utility model;

[0016] Figure 3 It is the bottom view of the overall external structure of the present utility model;

[0017] Figure 4 It is the cross-sectional view of the internal structure of the large fuel tank of the present utility model.

[0018] In the figure: 1. Small fuel tank; 2. Vacuum pump main unit; 3. Large fuel tank; 4. Bracket; 5. Drain pipe; 6. Suction pipe; 7. Constant pressure pipe; 8. End cap; 9. Oil sight glass; 10. Cold water inlet and outlet port; 11. Heat dissipation conduit; 12. Filter; 13. Fine hole. Detailed Embodiment

[0019] Please refer toFigures 1-4 , the present utility model provides a technical solution: a vacuum pump oil circulation device, including a vacuum pump main unit. There is a large oil tank 3 at the front lower end of the vacuum pump main unit 2. A heat dissipation conduit 11 is inserted into the bottom end inside the large oil tank 3. A pair of cold water inlet and outlet ports 10 are arranged inside the heat dissipation conduit 11. The rear end of the vacuum pump main unit is connected to a small oil tank 1 through a pipeline. The vacuum pump main unit 2 and the small oil tank 1 are interconnected. When the vacuum pump main unit 2 works, it will drive the lubricating oil to peristalsis inside the vacuum pump main unit 2. There is a pressure difference between the vacuum pump main unit 2 and the small oil tank 1. The air pressure inside the vacuum pump main unit 2 is higher than the air pressure inside the small oil tank 1. After the lubricating oil is used inside the vacuum pump main unit 2, it will flow into the small oil tank 1. The small oil tank 1 temporarily stores the lubricating oil. A filter element is built inside the small oil tank 1 to initially filter the lubricating oil. The filter element reduces the impurity content of the lubricating oil flowing into the large oil tank 3 inside the small oil tank 1.

[0020] On the left and right sides between the large oil tank 3 and the small oil tank 1, a constant pressure pipe 7 and a drain pipe 5 are respectively connected through flanges. The drain pipe 5 and the constant pressure pipe 7 make the inside of the small oil tank 1 and the large oil tank 3 interconnected. Air flows between the large oil tank 3 and the small oil tank 1 through the constant pressure pipe 7. The constant pressure pipe 7 is used to balance the oil pressure and air pressure inside the large oil tank 3 and the small oil tank 1. The lower end of the vacuum pump main unit 2 is fixedly connected to a bracket 4 arranged at the rear end of the large oil tank 3. The large oil tank 3 is fixedly connected to the front end of the bracket 4. The small oil tank 1 is above the rear of the bracket 4, and the large oil tank 3 is in front of the bracket 4. The bracket 4 makes the height of the small oil tank 1 higher than that of the large oil tank 3. The lubricating oil forms a height drop greater than that inside the large oil tank 3 inside the small oil tank 1. The lubricating oil will flow downward from the small oil tank 1 into the large oil tank 3 along the drain pipe 5, realizing the directional flow effect of the lubricating oil. The drain pipe 5 is used to drain the lubricating oil inside the small oil tank 1 into the large oil tank 3. The lubricating oil inside the large oil tank 3 is further filtered for oxide impurities by a filter 12.

[0021] Both ends of the large oil tank 3 are detachably connected with end covers 8. The outer ends of the cold water inlet and outlet ports 10 penetrate out of the outer end of an adjacent end cover 8. The left and right ends of the heat dissipation conduit 11 are respectively detachably connected with the inner ends of the adjacent end covers 8. The outer ends of the cold water inlet and outlet ports 10 penetrating out of the outer end of an adjacent end cover 8 are convenient for connecting with an external chiller. A pair of cold water inlet and outlet ports 10 are externally connected to a chiller on the outer surface of one end of the heat dissipation conduit 11, which can provide a cooling medium for the inside of the large oil tank 3. One of the cold water inlet and outlet ports 10 is externally connected to the cold water output end of the chiller through a pipeline, and the other cold water inlet and outlet port 10 is externally connected to the cold water input end of the chiller through a pipeline. Cold water enters the inside of the heat dissipation conduit 11 from one of the cold water inlet and outlet ports 10, and cold water flows out of the heat dissipation conduit 11 from the other cold water inlet and outlet port 10, so that the cold water flows into the inside of the heat dissipation conduit 11 from the chiller and then flows out of the heat dissipation conduit 11. The two cold water inlet and outlet ports 10 make the cold water circulate "in and out" inside the heat dissipation conduit 11.

[0022] The cold water is introduced into the inside of the heat dissipation conduit 11 from one of the cold water inlet / outlet ports 10 by an external chiller. The cold water inside the heat dissipation conduit 11 creates a temperature difference lower than that inside the large oil tank 3 on the wall of the heat dissipation conduit 11. The heat of the lubricating oil is transferred along the wall of the heat dissipation conduit 11 to the cold water. The cold water enters the inside of the heat dissipation conduit 11 through the inlet / outlet port to absorb the heat of the lubricating oil inside the large oil tank 3. The fluidity of the cold water inside the heat dissipation conduit 11 takes away the heat of the lubricating oil. The chiller enters the inside of the heat dissipation conduit 11 through the cold water inlet / outlet port 10 to absorb the heat of the lubricating oil inside the large oil tank 3. After flowing inside the heat conduit, the cold water flows out from the other cold water inlet / outlet port 10. The cold water circulation can quickly and effectively reduce the temperature of the oil fluid, cool the lubricating oil inside the large oil tank 3, and the heat dissipation conduit 11 absorbs the heat of the lubricating oil to reduce the content of oxide impurities generated by the oxidation of the lubricating oil.

[0023] An oil suction pipe 6 is connected between the large oil tank 3 and the vacuum pump main unit 2 by a flange. At the top inside the large oil tank 3, a filter 12 that is internally connected to the oil suction pipe 6 is detachably installed. A plurality of fine holes 13 are formed on the outer surface of the filter 12. The filter 12 provided at the top inside the large oil tank 3 is internally connected to the oil suction pipe 6, which is convenient for the vacuum pump main unit 2 to suck the lubricating oil from inside the large oil tank 3 through the oil suction pipe 6. A plurality of fine holes 13 are formed on the outer surface of the filter 12. The fine holes 13 can ensure that the original lubricating oil fluid enters the inside of the vacuum pump main unit 2 along the oil suction pipe 6 on the premise of filtering oxide impurities, improve the cleanliness of the oil fluid, and enable the vacuum pump main unit 2 to obtain clean and cooled lubricating oil. The oil suction pipe 6 is convenient for the lubricating oil inside the large oil tank 3 to be recycled by the vacuum pump main unit 2. The oil suction pipe 6 realizes the effect of the vacuum pump main unit 2 recycling the lubricating oil. The continuously cooled lubricating oil is input into the inside of the vacuum pump main unit 2, improving the refrigeration effect and heat dissipation capacity of the vacuum pump main unit 2, and ensuring that the vacuum pump main unit 2 will not malfunction due to overheating during long-term operation.

[0024] An oil sight glass 9 is installed on the upper part of the end cover 8. The oil sight glass 9 is located on the left and right sides above the heat dissipation conduit 11. The cold water inlet / outlet port 10 is located below the oil sight glass 9. The oil sight glass 9 located on the left and right sides above the heat dissipation conduit 11 facilitates the operator to observe the state of the oil fluid and the heat dissipation situation at any time, discover problems in time and handle them. Removing the end covers 8 at the left and right ends of the large oil tank 3 facilitates the maintenance, cleaning and replacement of components such as the heat dissipation conduit 11 and the filter 12 inside the large oil tank 3, so as to optimize the overall installation and layout of the device. The connection method is reliable, convenient for installation and disassembly, and convenient for equipment maintenance and repair, making the product more durable and practical.

Claims

1. A vacuum pump oil circulation device, comprising a vacuum pump host, characterized in that: The rear end of the vacuum pump main unit is connected to a small oil tank (1) via a pipeline, and the front lower end of the vacuum pump main unit (2) is provided with a large oil tank (3); A heat dissipation conduit (11) is inserted into the bottom end of the large oil tank (3), and a pair of cold water inlet and outlet ports (10) are arranged inside the heat dissipation conduit (11); A constant pressure pipe (7) and an oil discharge pipe (5) are respectively connected via flanges on the left and right sides between the large oil tank (3) and the small oil tank (1); and an oil suction pipe (6) is connected via flanges between the large oil tank (3) and the vacuum pump main unit (2); The top end of the large oil tank (3) is detachably connected to a filter (12) that penetrates the inside of the oil suction pipe (6), and the outer surface of the filter (12) is provided with a plurality of fine holes (13).

2. A vacuum pump oil circulation device according to claim 1, characterized in that: The lower end of the vacuum pump main unit (2) is fixedly connected to a bracket (4) arranged at the rear end of the large oil tank (3), and the large oil tank (3) is fixedly connected to the front end of the bracket (4).

3. The vacuum pump oil circulation device according to claim 1, characterized in that: The left and right ends of the large oil tank (3) are detachably connected to end covers (8), the left and right ends of the heat dissipation pipe (11) are detachably connected to the inner ends of adjacent end covers (8), and the outer end of the cold water inlet and outlet port (10) passes outwardly through the outer end of an adjacent end cover (8).

4. A vacuum pump oil circulation device as claimed in claim 3, characterized in that: An oil mirror (9) is installed on the upper part of the end cover (8), and the oil mirror (9) is located on the left and right sides above the heat dissipation pipe (11), and the cold water inlet and outlet port (10) is located below the oil mirror (9).

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