A neat oil device

Abstract

The application relates to an oil purifying device, belonging to the oil purifying machine field, which comprises oil conveying devices I, fine filter devices I, electrostatic filter devices, super-fine filter devices, ion exchange filter devices and fine filter devices II arranged in sequence along the oil flow path direction, the filtering precision of the super-fine filter devices is higher than that of the fine filter devices I and the fine filter devices II, ion exchange resin is arranged in the ion exchange filter devices, and the ion exchange resin is configured to filter off the soluble paint film in the oil. The vacuum tank is internally provided with a dispersion cylinder, the oil mist is separated from the steam pipe through the dispersion cylinder, the oil mist is prevented from being sucked into the steam pipe together with the water vapor, and the stubborn problem that the oil mist is sucked away together with the water vapor in the traditional vacuum electrostatic oil filter is effectively solved.

Description

Technical Field

[0001] This application relates to the field of oil purifiers, and in particular to an oil purification device. Background Technology

[0002] The structure of the vacuum electrostatic oil filter commonly used in the prior art is basically as shown in the patent with publication number CN102847371A. It achieves oil filtration through a three-step method of filter element + electrostatic adsorption + vacuum dehydration, with moderate filtration efficiency and cost.

[0003] With the development of society and economy, the market has increasingly higher requirements for the filtration accuracy of oil. The traditional three-step method of filter element + electrostatic adsorption + vacuum dehydration can no longer meet the high-precision filtration needs of oil. In particular, the soluble paint film in the oil cannot be filtered out, making it difficult for existing vacuum electrostatic oil filters to meet market demands.

[0004] In addition, the vacuum dehydration section of traditional vacuum electrostatic oil filters generally suffers from the persistent problem of oil mist being drawn away with water vapor. Utility Model Content

[0005] To address the problem that existing vacuum electrostatic oil filters cannot filter soluble paint films, this application provides an oil purification device.

[0006] In one aspect of this disclosure, an oil purification device is proposed using the following technical solution: An oil purification device includes an oil conveying device, a fine filtration device, an electrostatic filtration device, an ultrafine filtration device, an ion exchange filtration device, and a fine filtration device two arranged sequentially along the oil flow path. The ultrafine filtration device has a higher filtration accuracy than the fine filtration devices one and two. The ion exchange filtration device is equipped with an ion exchange resin, which is configured to filter out soluble paint films in the oil.

[0007] By adopting the above technical solution, the ion exchange resin built into the ion exchange filter can effectively remove soluble paint film, improve the oil filtration accuracy, and meet market demand.

[0008] Preferably, the oil purification equipment further includes an oil inlet pipe, a first pipe, a second pipe, and an oil outlet pipe. The first pipe and the second pipe are connected in parallel, and both ends are respectively connected to the oil inlet pipe and the oil outlet pipe. The oil conveying device 1, fine filtration device 1, electrostatic filtration device, ultrafine filtration device, ion exchange filtration device and fine filtration device 2 are connected in series via pipeline 1; The second pipeline is sequentially equipped with a heating device, a vacuum device, and an oil delivery device II along the oil flow direction. The oil outlet of the second pipeline is connected to the oil inlet of the second fine filter device; The vacuum device is connected to a negative pressure regulating mechanism for adjusting the vacuum level inside the vacuum device and a pumping mechanism for extracting water vapor from the vacuum device.

[0009] By adopting the above technical solution, water in the oil can be removed as needed.

[0010] Preferably, the vacuum device includes: The container has an oil inlet storage area, a dispersion cylinder and an oil outlet storage area arranged sequentially from top to bottom. The dispersion cylinder and the inner wall of the container are spaced apart to form a vapor storage area. The upper end of the vapor storage area is sealed and the lower end is connected to the oil outlet storage area. The upper and lower ends of the dispersion cylinder are respectively connected to the oil inlet storage area and the oil outlet storage area. The Pall ring is located inside the dispersion cylinder.

[0011] By adopting the above technical solution, the oil mist and the steam outlet pipe are separated by the dispersion cylinder, which prevents the oil mist from being sucked into the steam outlet pipe along with the water vapor. This effectively solves the persistent problem of oil mist being sucked away with water vapor in the vacuum dehydration section of traditional vacuum electrostatic oil filters.

[0012] Preferably, the dispersion cylinder includes a cylinder body with open ends and perforated plates at both ends of the cylinder body.

[0013] By adopting the above technical solution, the oil is dispersed twice by means of the perforated plates at both ends of the cylinder, so as to remove water vapor from the oil more quickly and effectively.

[0014] Preferably, the dispersion cylinder is provided with a support cylinder that is fixedly connected to the perforated plates at both ends of the cylinder body, the support cylinder is provided with an mounting plate, and the cylinder wall of the support cylinder has through holes.

[0015] By adopting the above technical solution, on the one hand, the support cylinder is used to support and fix the dispersion cylinder, thereby enhancing the structural strength of the dispersion cylinder; on the other hand, it is convenient to place the inlet of the negative pressure regulating pipe inside the support cylinder and fix it by the mounting plate. With this design, the negative pressure regulating pipe will not affect the Pall ring entering the dispersion cylinder, making it convenient to disassemble and assemble the Pall ring.

[0016] Preferably, the negative pressure regulating mechanism includes a negative pressure regulating pipe and an air filter, a flow regulating valve, and a one-way valve arranged sequentially on the negative pressure regulating pipe along the airflow direction. The air outlet of the negative pressure regulating pipe extends from top to bottom through the oil inlet storage area and into the support cylinder, and is fixedly connected to the mounting plate.

[0017] By adopting the above technical solution, the vacuum level inside the vacuum device can be adjusted to meet the negative pressure requirements under different working conditions.

[0018] Preferably, the extraction mechanism includes a steam outlet pipe and a heat exchanger connected to the outlet end of the steam outlet pipe, the inlet end of the steam outlet pipe is connected to a steam storage area, and the heat exchanger is connected to a vacuum pump.

[0019] By adopting the above technical solution, water vapor in the vacuum device is extracted, thereby achieving water removal from the oil.

[0020] Preferably, the second pipeline includes an oil supply pipe 2 and an oil supply pipe 3, the oil inlet storage area is connected to the second oil supply pipe, and the oil outlet storage area is connected to the third oil supply pipe.

[0021] By adopting the above technical solution, the oil can be dehydrated by flowing from top to bottom through the container.

[0022] Preferably, the oil outlet storage area is equipped with a level switch, which is configured to control the start and stop of the oil pump.

[0023] By adopting the above technical solution, the oil level in the oil storage area can be detected in real time. If the level is too high, the second oil pump will be started in time to pump out the oil in the oil storage area.

[0024] Preferably, the steam storage area and the internal space of the dispersion cylinder are connected through the oil outlet and liquid storage area.

[0025] By adopting the above technical solution, the oil can squeeze the water vapor in the dispersion cylinder out of the dispersion cylinder and enter the steam storage area through the oil outlet storage area. Moreover, the oil mist inside the dispersion cylinder will not be sucked away by the steam outlet pipe, which effectively solves the persistent problem that the oil mist is sucked away with the water vapor in the vacuum dehydration part of the traditional vacuum electrostatic oil filter.

[0026] In summary, this application includes at least one of the following beneficial technical effects: The oil purification equipment of this application is equipped with an ion exchange filter. The ion exchange filter has built-in ion exchange resin, which can effectively remove soluble paint film, improve the oil filtration accuracy, and meet market demand. The vacuum tank of this application has a built-in dispersion cylinder, which separates the oil mist from the steam outlet pipe, preventing the oil mist from being sucked into the steam outlet pipe along with the water vapor. This effectively solves the persistent problem of oil mist being sucked away with water vapor in the vacuum water removal section of traditional vacuum electrostatic oil filters. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the oil purification equipment described in this application.

[0028] Figure 2 This is a schematic diagram of the structure of the oil purification equipment in this application. Figure 1 .

[0029] Figure 3 This is a schematic diagram of the structure of the oil purification equipment in this application. Figure 2 .

[0030] Figure 4 This is a schematic diagram of the structure of the oil purification equipment in this application. Figure 3 .

[0031] Figure 5 This is a schematic diagram of the oil purification equipment described in this application. Figure 4 .

[0032] Figure 6 This is a schematic diagram of the structure of the oil purification equipment in this application. Figure 5 .

[0033] Figure 7 This is a schematic diagram of the structure of the oil purification equipment in this application. Figure 6 .

[0034] Figure 8 This is a schematic diagram of the oil purification equipment described in this application. Figure 7 .

[0035] Figure 9 This is a schematic diagram of the vacuum device of this application.

[0036] Figure 10 This is the internal structure of the vacuum device of this application. Figure 1 .

[0037] Figure 11 This is the internal structure of the vacuum device of this application. Figure 2 .

[0038] Figure 12 This is the internal structure of the support cylinder in this application. Figure 1 .

[0039] Figure 13 This is the internal structure of the support cylinder in this application. Figure 2 .

[0040] Explanation of reference numerals in the attached diagram: 1. Frame; 2. Oil inlet pipe; 3. Oil delivery pipe one; 4. Oil delivery pipe four; 5. Oil outlet pipe; 6. Oil delivery pipe three; 7. Oil delivery pipe two; 8. Pall ring; 9. Upper orifice plate; 10. Negative pressure regulating pipe; 11. Tank body; 12. Tank cover; 13. Mounting bracket; 14. Dispersion cylinder; 15. Steam outlet pipe; 16. Support cylinder; 17. Lower orifice plate; 18. Mounting plate; 19. Oil inlet storage area; 20. Steam storage area; 21. Oil outlet storage area; 22. Container; P01, Oil pump 2; P02, Oil pump 1; P03, Vacuum pump; FL01 Heating device; FL02 Fine filtration device one; FL03 Electrostatic filtration device; FL04 Ultrafine filtration device; FL05 Ion exchange filtration device; FL06 Fine filtration device two; FL07, heat exchanger; FL071, condenser; FL072, water collection tank; EV06, electric ball valve; MV01, shut-off valve; MV05, flow regulating valve; VE01, Vacuum device; SF01, Viewing window; LS, Liquid level switch; TA, temperature sensor; PI01, air filter; CV01, check valve; PG02, pressure sensor. Detailed Implementation

[0041] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0042] The following is in conjunction with the appendix Figure 1-13 This application will be described in further detail.

[0043] In one aspect of this disclosure, an oil purification device is provided, such as... Figures 1-8 As shown, it includes an oil conveying device 1, a fine filtration device 1 FL02, an electrostatic filtration device FL03, an ultrafine filtration device FL04, an ion exchange filtration device FL05, and a fine filtration device 2 FL06 arranged sequentially along the oil flow path. The oil flows through the oil conveying device 1, the fine filtration device 1 FL02, the electrostatic filtration device FL03, the ultrafine filtration device FL04, the ion exchange filtration device FL05, and the fine filtration device 2 FL06 in sequence.

[0044] The oil conveying device is used to drive the flow of oil. In specific implementation, the oil conveying device can be an oil pump PO2.

[0045] The fine filter device FL02 is used for the initial filtration of oil, filtering out large-volume impurities in the oil. Therefore, its filtration accuracy is generally not as high as that of the ultrafine filter device FL04-FL02, for example, 10μm.

[0046] The filtered oil enters the electrostatic filtration device FL03 for electrostatic adsorption filtration. At the same time, the paint film free in the oil aggregates and grows, making it easier to remove in subsequent filtration. The oil does not need to be heated or vacuumed during the electrostatic process, and the performance and quality of the oil are not affected after purification.

[0047] It should be noted that the working principle of the electrostatic filter FL03 is common knowledge, and will not be elaborated upon here.

[0048] The oil, after being filtered by the electrostatic filter FL03, enters the ultra-fine filter FL04 for fine filtration. The ultra-fine filter FL04 has a higher filtration accuracy than the fine filter FL02. For example, when the filtration accuracy of the fine filter FL02 is 10μm, the filtration accuracy of the ultra-fine filter FL04 is less than 10μm, such as 1μm, thereby filtering out the free paint film that has accumulated and grown in the electrostatic filter FL03.

[0049] After passing through the fine filtration device FL02, the electrostatic filtration device FL03, and the ultrafine filtration device FL04, large impurities and free paint film in the oil are filtered out. At this point, only dissolved paint film remains in the oil.

[0050] The ion exchange filter FL05 is equipped with ion exchange resin, which is designed to filter out soluble paint film in the oil. By utilizing the ion exchange resin built into the ion exchange filter, the soluble paint film can be effectively removed, thereby improving the oil filtration accuracy and meeting market demands.

[0051] To ensure the quality of oil filtration and prevent filtration failure due to malfunction of one or more of the fine filter FL02, electrostatic filter FL03, ultrafine filter FL04, or ion exchange filter FL05, a fine filter FL06 is installed at the outlet of the ion exchange filter FL05 to further filter the oil. This ensures the quality of oil filtration, and the filtered oil can then be used in the oil application system.

[0052] Specifically, in the embodiments disclosed herein, such as Figure 1 As shown, the oil purification equipment includes an oil inlet pipe 2, a pipeline 1, and an oil outlet pipe 5. The two ends of the pipeline 1 are connected to the oil inlet pipe 2 and the oil outlet pipe 5, respectively. The oil conveying device 1, the fine filtration device 1 FL02, the electrostatic filtration device FL03, the ultrafine filtration device FL04, the ion exchange filtration device FL05, and the fine filtration device 2 FL06 are connected in series through the pipeline 1.

[0053] The pipeline system includes an oil delivery pipe 3 and an oil delivery pipe 4. The two ends of the oil delivery pipe 3 are connected to the oil inlet pipe 2 and the oil delivery device 1, respectively. The two ends of the oil delivery pipe 4 are connected to an ion exchange filter and a fine filter 2, as shown below. Figure 1 As shown, a one-way valve CV01 is also installed on the oil pipeline 4.

[0054] In the embodiments disclosed herein, such as Figures 1-8 As shown, the oil inlet pipe 2 is equipped with a shut-off valve MV01 and an electric ball valve EV06. Both the shut-off valve MV01 and the electric ball valve EV06 are used to control the opening and closing of the oil inlet pipe 2.

[0055] In the embodiments disclosed herein, such as Figure 1As shown, the oil purification equipment also has a second pipeline. The first pipeline and the second pipeline are connected in parallel. The two ends of the second pipeline are respectively connected to the oil inlet pipe 2 and the oil inlet end of the fine filter device FL06. The second pipeline is provided with a heating device FL01, a vacuum device VE01 and an oil conveying device FL06 in sequence along the oil flow direction.

[0056] The heating device FL01 is used to heat the oil, so that the water in the oil will evaporate after it enters the vacuum device VE01.

[0057] In practice, the heating device FL01 can be electrically heated at a temperature of 65°C, and the vacuum device VE01 has an internal negative pressure of -0.80 Bar.

[0058] The vacuum device VE01 is used to evaporate water in the oil, thereby achieving oil-water separation.

[0059] The second oil conveying device is used to drive the oil to flow in the second pipeline. In specific implementation, the second oil conveying device can be an oil pump P01.

[0060] The vacuum device VE01 is connected to a negative pressure regulating mechanism for adjusting the vacuum level inside the vacuum device VE01 and a vacuum pumping mechanism for extracting water vapor from the vacuum device VE01. By adjusting the vacuum level inside the vacuum device VE01, the vacuum level requirements under different working conditions can be met. The vacuum pumping mechanism continuously extracts water vapor from the vacuum device VE01 to achieve oil-water separation and remove water from the oil.

[0061] Specifically, such as Figure 1 and Figure 9 As shown, the negative pressure regulating mechanism includes a negative pressure regulating pipe 10 and an air filter PI01, a flow regulating valve MV05, and a one-way valve CV01 arranged sequentially on the negative pressure regulating pipe 10 along the airflow direction. The air outlet of the negative pressure regulating pipe 10 is connected to the inside of the vacuum device VE01. The vacuum degree inside the vacuum device VE01 is adjusted by the flow regulating valve MV05. The air filter PI01 is used to filter the air entering the negative pressure regulating pipe 10.

[0062] Specifically, such as Figures 1-8 As shown, the extraction mechanism includes a steam outlet pipe 15 and a heat exchanger FL07 connected to the steam outlet end of the steam outlet pipe 15. The steam inlet end of the steam outlet pipe 15 is connected to the interior of the vacuum device VE01. The heat exchanger FL07 is connected to a vacuum pump P03. The vacuum pump P03 is used to extract the gas in the heat exchanger FL07 to maintain the negative pressure environment in the vacuum device VE01 and achieve oil dehydration.

[0063] More specifically, such as Figure 4 and Figure 5As shown, the heat exchanger FL07 includes a condenser FL071 and a water collection tank FL072. The air inlet of the condenser FL071 is connected to the vacuum device VE01 so that water vapor in the vacuum device VE01 can enter the condenser FL071 for cooling. The condenser FL071 and the water collection tank FL072 are connected, and the water collection tank FL072 is connected to the vacuum pump P03. The vacuum pump P03 draws water mist from the condenser FL071 into the water collection tank FL072 to prevent a large amount of condensate from accumulating in the condenser FL071 and affecting the normal operation of the condenser FL071.

[0064] like Figure 1 As shown, the oil in pipeline two first enters the heating device FL01 and is heated to a temperature at which the water in the oil can evaporate in the vacuum device VE01. Then the oil enters the vacuum device VE01, where the water evaporates and the water vapor is drawn away by the pumping mechanism. The water-free oil leaves the vacuum device VE01 and is sent by the oil conveying device two to the fine filtration device two FL06 for filtration. After filtration, it can be discharged from the oil outlet pipe 5 and put into use in the oil system.

[0065] In the embodiments disclosed herein, such as Figures 2-8 As shown, the oil conveying device 1, fine filtration device 1 FL02, electrostatic filtration device FL03, ultrafine filtration device FL04, ion exchange filtration device FL05, and fine filtration device 2 FL06 are installed and fixed on the frame 1. The oil flows through the oil conveying device 1, fine filtration device 1 FL02, electrostatic filtration device FL03, ultrafine filtration device FL04, ion exchange filtration device FL05, fine filtration device 2 FL06, heating device FL01, vacuum device VE01, and oil conveying device 2.

[0066] In the embodiments disclosed herein, such as Figures 9-13 As shown, the vacuum device VE01 includes a container 22, and the container 22 is provided with an oil inlet storage area 19, a dispersion cylinder 14 and an oil outlet storage area 21 arranged sequentially from top to bottom.

[0067] Specifically, the container 22 includes a tank body 11 and a lid 12 that is detachably and sealingly fixedly connected to the tank body 11.

[0068] Oil inlet storage area 19 is used for temporary storage of oil entering container 22, such as... Figures 1-10 As shown, the second pipeline includes an oil supply pipe 7, the oil inlet storage area 19 is connected to the outlet end of the oil supply pipe 7, and the inlet end of the oil supply pipe 7 is connected to the heating device FL01.

[0069] The dispersion cylinder 14 is used on the one hand to disperse the oil to form oil mist, so that the water in the oil mist can be quickly evaporated and separated from the oil mist. On the other hand, it is used to separate the oil mist from the steam outlet pipe 15, so as to prevent the oil mist from being sucked into the steam outlet pipe 15 along with the water vapor. This effectively solves the problem that the oil mist is generally sucked away with the water vapor in the vacuum dehydration part of the traditional vacuum electrostatic oil filter.

[0070] The oil storage area 21 is used to store the oil after the water has been removed.

[0071] like Figure 10 As shown, the inner walls of the dispersion cylinder 14 and the container 22 are spaced apart to form a steam storage area 20. The upper end of the steam storage area 20 is sealed, and the lower end is connected to the oil outlet storage area 21. The upper and lower ends of the dispersion cylinder 14 are respectively connected to the oil inlet storage area 19 and the oil outlet storage area 21. With this design, the oil mist inside the dispersion cylinder 14 and the oil in the oil inlet storage area 19 will not enter the steam storage area 20 and be sucked away by the steam outlet pipe 15. The water vapor in the oil outlet storage area 21 rises to the steam storage area 20 and is sucked away by the steam outlet pipe 15, thus avoiding the oil mist being sucked into the steam outlet pipe 15 along with the water vapor. This effectively solves the persistent problem of oil mist being sucked away with water vapor in the vacuum dehydration part of traditional vacuum electrostatic oil filters.

[0072] In the embodiments disclosed herein, such as Figure 9 and Figure 10 As shown, the inlet end of the steam outlet pipe 15 is connected to the steam storage area 20.

[0073] In the embodiments disclosed herein, such as Figure 1 As shown, a Pall ring 8 is provided inside the dispersion cylinder 14 to fully disperse the oil and facilitate the rapid evaporation and separation of water vapor from the oil.

[0074] Furthermore, such as Figures 10-13 As shown, the dispersion cylinder 14 includes a cylinder body with open ends and an upper perforated plate 9 and a lower perforated plate 17 at both ends of the cylinder body. The oil is dispersed twice by means of the perforated plates at both ends of the cylinder body, so as to remove water vapor from the oil more quickly and better.

[0075] like Figure 10 As shown, when the oil is injected into the oil storage area 19 through the oil delivery pipe 2 7, the oil is dispersed under the action of the upper orifice plate 9 and enters the Pall ring 8 inside the cylinder for further dispersion to form oil mist. During this process, the water in the oil mist evaporates and escapes to form water vapor, which separates from the oil. The water vapor is squeezed out from the lower end of the cylinder by the falling oil mist and enters the oil storage area 21. Then the water vapor rises into the steam storage area 20 and is sucked away by the steam outlet pipe 15, while the oil mist continues to fall to the bottom of the oil storage area 21 and gathers to form oil. It can be seen that the setting of the dispersion cylinder 14 makes the oil mist and the steam outlet pipe 15 far apart, and the oil mist is not easily sucked away by the steam outlet pipe 15.

[0076] The existing vacuum device VE01 lacks a dispersion cylinder 14, and the oil mist and the steam outlet pipe 15 are very close together. The oil mist is easily sucked away by the steam outlet pipe 15, affecting the normal operation of the pumping mechanism and damaging the vacuum pump P03.

[0077] In the embodiments disclosed herein, such as Figures 11-13 As shown, the dispersion cylinder 14 is provided with a support cylinder 16 that is fixedly connected to the perforated plates at both ends of the cylinder body. The support cylinder 16 is provided with an mounting plate 18, and the cylinder wall of the support cylinder 16 has through holes.

[0078] By adopting the above technical solution, on the one hand, the support cylinder 16 is used to support and fix the dispersion cylinder 14, enhancing the structural strength of the dispersion cylinder 14; on the other hand, it facilitates placing the inlet of the negative pressure regulating pipe 10 inside the support cylinder 16 and fixing it to the mounting plate 18. With this design, the negative pressure regulating pipe 10 will not affect the entry of the Pall ring 8 into the dispersion cylinder 14, facilitating the installation and removal of the Pall ring 8. Figure 12 and Figure 13 As shown, the air outlet of the negative pressure regulating pipe 10 passes through the oil inlet storage area 19 from top to bottom and extends into the support cylinder 16, and is fixedly connected to the mounting plate 18.

[0079] The support cylinder 16 has through holes in its wall structure, which allows the internal space of the support cylinder 16 to be connected to the external space, making it convenient for the negative pressure regulating pipe 10, which extends into the support cylinder 16, to adjust the vacuum level in the container 22.

[0080] In the embodiments disclosed herein, such as Figure 11 As shown, in order to further enhance the structural strength of the dispersion cylinder 14, a mounting bracket 13 is installed at the bottom of the dispersion cylinder 14.

[0081] In the embodiments disclosed herein, such as Figures 1-10 As shown, the pipeline second also includes an oil delivery pipeline third 6. The oil storage area 21 is connected to the oil delivery pipeline third 6. The outlet end of the oil delivery pipeline third 6 is connected to the oil delivery device second. The oil flows from top to bottom through the container 22 to complete the water removal and is then transported by the oil delivery device second to the fine filtration device second FL06 for filtration.

[0082] In the embodiments disclosed herein, such as Figure 10 As shown, the oil outlet storage area 21 is equipped with a level switch LS. The level switch LS is configured to control the start and stop of the oil pump 2P01. The level switch LS detects the oil level in the oil outlet storage area 21 in real time. If the level is too high, the oil pump 2P01 is started in time to pump out the oil in the oil outlet storage area 21 to avoid the high level affecting the conduction between the steam storage area 20 and the internal space of the dispersion cylinder 14 through the oil outlet storage area 21.

[0083] When the vacuum device VE01 is working, the liquid level of the oil in the oil outlet storage area 21 is always kept at a distance from the mounting bracket 13 above it, so as to ensure that the water vapor flowing out from the lower end of the dispersion cylinder 14 can smoothly pass through the oil outlet storage area 21 and enter the vapor storage area 20.

[0084] In this embodiment of the disclosure, the temperature of the oil entering the electrostatic filtration device FL03 does not exceed 40°C, because the removal effect of suspended paint film is best below 40°C.

[0085] In one specific embodiment, the oil is a lubricating oil.

[0086] Preferably, the negative pressure inside the vacuum device VE01 is -0.6 bar. Under this pressure, there is less foam in the oil in the container 22, which prevents excessive foam from entering the steam storage area 20 and being sucked away by the steam outlet pipe 15, because there is oil mist in the foam.

[0087] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An oil purification device, characterized in that: The device includes an oil conveying device 1, a fine filtration device 1, an electrostatic filtration device, an ultrafine filtration device, an ion exchange filtration device, and a fine filtration device 2 arranged sequentially along the oil flow path. The ultrafine filtration device has a higher filtration accuracy than the fine filtration devices 1 and 2. The ion exchange filtration device is equipped with ion exchange resin, which is designed to filter out soluble paint films in the oil.

2. The oil purification equipment according to claim 1, characterized in that: It also includes an oil inlet pipe, a first pipe, a second pipe, and an oil outlet pipe. The first pipe and the second pipe are connected in parallel, and both ends are respectively connected to the oil inlet pipe and the oil outlet pipe. The oil conveying device 1, fine filtration device 1, electrostatic filtration device, ultrafine filtration device, ion exchange filtration device and fine filtration device 2 are connected in series via pipeline 1; The second pipeline is sequentially equipped with a heating device, a vacuum device, and an oil delivery device II along the oil flow direction. The oil outlet of the second pipeline is connected to the oil inlet of the second fine filter device; The vacuum device is connected to a negative pressure regulating mechanism for adjusting the vacuum level inside the vacuum device and a pumping mechanism for extracting water vapor from the vacuum device.

3. The oil purification equipment according to claim 2, characterized in that: The vacuum device includes: The container has an oil inlet storage area, a dispersion cylinder and an oil outlet storage area arranged sequentially from top to bottom. The dispersion cylinder and the inner wall of the container are spaced apart to form a vapor storage area. The upper end of the vapor storage area is sealed and the lower end is connected to the oil outlet storage area. The upper and lower ends of the dispersion cylinder are respectively connected to the oil inlet storage area and the oil outlet storage area. The Pall ring is located inside the dispersion cylinder.

4. The oil purification equipment according to claim 3, characterized in that: The dispersion cylinder includes a cylinder body with open ends and perforated plates at both ends of the cylinder body.

5. The oil purification equipment according to claim 4, characterized in that: The dispersion cylinder is provided with a support cylinder that is fixedly connected to the perforated plates at both ends of the cylinder body. The support cylinder is provided with an installation plate, and the cylinder wall of the support cylinder has through holes.

6. The oil purification equipment according to claim 5, characterized in that: The negative pressure regulating mechanism includes a negative pressure regulating pipe and an air filter, a flow regulating valve, and a one-way valve arranged sequentially on the negative pressure regulating pipe along the airflow direction. The air outlet of the negative pressure regulating pipe extends from top to bottom through the oil inlet storage area and into the support cylinder, and is fixedly connected to the mounting plate.

7. The oil purification equipment according to claim 3, characterized in that: The extraction mechanism includes a steam outlet pipe and a heat exchanger connected to the outlet end of the steam outlet pipe. The inlet end of the steam outlet pipe is connected to a steam storage area, and the heat exchanger is connected to a vacuum pump.

8. The oil purification equipment according to claim 3, characterized in that: The second pipeline includes an oil pipeline 2 and an oil pipeline 3. The oil inlet storage area is connected to the oil pipeline 2, and the oil outlet storage area is connected to the oil pipeline 3.

9. The oil purification equipment according to claim 3, characterized in that: The oil outlet storage area is equipped with a level switch, which is configured to control the start and stop of the two oil pumps.

10. The oil purification equipment according to claim 3, characterized in that: The steam storage area and the internal space of the dispersion cylinder are connected through the oil outlet and liquid storage area.

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