Automatic filtering device and method for preventing emulsification of mineral oil

Abstract

The invention discloses an automatic filtering device, belongs to the technical field of mineral oil emulsification prevention devices, and particularly relates to an automatic filtering device and method for mineral oil emulsification prevention. The automatic filtering device comprises a water absorbent cylinder 1, an electrostatic adsorption cylinder 2, a vacuum assembly 3, a connecting pipeline assembly, an oil inlet 5 and an oil outlet 6; the input end of the connecting pipeline assembly is connected with the oil inlet 5, and the output end is connected with the oil outlet 6. The connecting pipeline assembly is connected with the water absorbent cylinder 1 and the electrostatic adsorption cylinder 2 at the same time. And the water absorbent cylinder 1 and the electrostatic adsorption cylinder 2 are communicated with the oil inlet 5 and the oil outlet 6. The device can realize two modes of only water removal and electrostatic adsorption while water removal, can adapt to different working occasions, and can remove micro-water in mineral oil, thereby ensuring that the water content of the mineral oil meets the national standard.

Description

Technical Field

[0001] The invention discloses an automatic filtering device, belongs to the technical field of mineral oil emulsification prevention devices, and specifically relates to an automatic filtering device and method for preventing mineral oil emulsification. Background Art

[0002] During long-term use, due to the breathing action of the air filter of the fuel tank, external air will enter the fuel tank. Since the air contains moisture, condensation causes moisture to mix into the mineral oil. The long-term accumulation of moisture causes the water content in the mineral oil to exceed the standard of 0.03% (national standard), thus causing the problem of mineral oil emulsification.

[0003] Mineral oil emulsification can bring a series of hazards, mainly including the following:

[0004] Performance degradation: Reduced lubrication performance: Emulsified mineral oil will reduce its original lubrication performance, resulting in increased friction and wear of mechanical parts.

[0005] Corrosion risk: Emulsified mineral oil contains water, which can cause corrosion of metal parts and shorten the service life of the equipment;

[0006] Powertrain Problems: Emulsified oil can cause reduced efficiency or malfunction of the powertrain.

[0007] Increased difficulty in handling: Emulsified mineral oil is more complicated to handle because the process of separating water and oil is more difficult, which increases the cost and difficulty of handling.

[0008] Environmental and safety issues: Environmental pollution: Improper handling of emulsified mineral oil may cause environmental pollution and affect the quality of soil and water.

[0009] In view of the hazards caused by the emulsification of mineral oil, preventing emulsification can effectively avoid the hazards caused by emulsification, ensure the normal operation of equipment and extend its service life. Summary of the invention

[0010] Purpose of the invention: To provide an automatic filtering device and method for preventing emulsification of mineral oil, so as to solve the above-mentioned problems.

[0011] Technical solution: An automatic filtering device for preventing emulsification of mineral oil, the automatic filtering device comprising: a water absorbent cylinder 1, an electrostatic adsorption cylinder 2, a vacuum component 3, a connecting pipeline component, an oil inlet 5 and an oil outlet 6;

[0012] The input end of the connecting pipeline assembly is connected to the oil inlet 5, and the output end is connected to the oil outlet 6. The connecting pipeline assembly is simultaneously connected to the water absorbent cylinder 1 and the electrostatic adsorption cylinder 2 so that the water absorbent cylinder 1 and the electrostatic adsorption cylinder 2 are connected to the oil inlet 5 and the oil outlet 6. The vacuum assembly 3 is simultaneously connected to the water absorbent cylinder 1 and the electrostatic adsorption cylinder 2.

[0013] In a further embodiment, the connecting pipeline assembly includes: a first solenoid valve KV1, a second solenoid valve KV2, a third solenoid valve KV3, a fourth solenoid valve KV4, a fifth solenoid valve KV5, a sixth solenoid valve KV6, a seventh solenoid valve KV7, a first three-way valve V1, a second three-way valve V3, a third three-way valve V5, a fourth three-way valve V6, a fifth three-way valve V8, a first four-way valve V2, a second four-way valve V4, a third four-way valve V7, a first servo oil pump Y0, an electric heater Y5, a circulation valve X4, a second one-way valve X2, a first one-way valve X1, a second servo oil pump Y1, a temperature sensor A15, and a first pressure sensor A12;

[0014] One end of the first solenoid valve KV1 is connected to the oil inlet 5, and the other end is connected to the port 1 of the first four-way valve V2. One end of the second solenoid valve KV2 is connected to the port 2 of the first four-way valve V2, and the other end is connected to the port 1 of the second three-way valve V3. The port 2 of the second three-way valve V3 is connected to the electrostatic adsorption cylinder 2. One end of the third solenoid valve KV3 is connected to the port 3 of the first four-way valve V2, and the other end is connected to the port 1 of the first three-way valve V1. The port 2 of the first three-way valve V1 is connected to the water absorbent cylinder 1. One end of the servo oil pump Y0 is connected to the 4th port of the first four-way valve V2, and the other end is connected to one end of the electric heater Y5. One end of the circulation valve X4 is connected to the other end of the electric heater Y5. The 1st port of the second four-way valve V4 is connected to the other end of the circulation valve X4. The 2nd port of the second four-way valve V4 is connected to the temperature sensor A15. The 3rd port of the second four-way valve V4 is connected to one end of the fourth solenoid valve KV4. The 4th port of the second four-way valve V4 is connected to the 1st port of the third four-way valve V7. The 3rd port of the third four-way valve V7 is connected to the first pressure The sensor A12 is connected, the 4th port of the third four-way valve V7 is connected to one end of the fifth solenoid valve KV5, the other end of the fourth solenoid valve KV4 is connected to the 3rd port of the first three-way valve V1, the other end of the fifth solenoid valve KV5 is connected to one end of the second one-way valve X2, the 1st port of the fifth three-way valve V8 is connected to the water absorbent cartridge 1, the 2nd port of the fifth three-way valve V8 is connected to one end of the sixth solenoid valve KV6, the 3rd port of the fifth three-way valve V8 is connected to one end of the seventh solenoid valve KV7, the other end of the sixth solenoid valve KV6 is connected to the One end is connected with the electrostatic adsorption cylinder 2, the other end of the seventh solenoid valve KV7 is connected with one end of the third solenoid valve X1, one end of the second servo oil pump Y1 is connected with the electrostatic adsorption cylinder 2, and the other end is connected with port 1 of the third three-way valve V5, port 2 of the third three-way valve V5 is connected with the other end of the second one-way valve X2, port 3 of the third three-way valve V5 is connected with port 1 of the fourth three-way valve V6, port 2 of the fourth three-way valve V6 is connected with port 2 of the first one-way valve X1, and port 3 of the fourth three-way valve V6 is connected with the oil outlet 6.

[0015] In a further embodiment, the connecting pipeline assembly is divided into a water removal pipeline, a water removal and electrostatic adsorption pipeline, and a filter element replacement / water absorbent pipeline;

[0016] The dewatering pipeline is composed of an oil inlet 5, a first solenoid valve KV1, a first four-way valve V2, a first servo oil pump Y0, an electric heater Y5, a circulation valve X4, a second four-way valve V4, a fourth solenoid valve KV4, a first three-way valve V1, a water-absorbing agent cartridge 1, a fifth three-way valve V8, a seventh solenoid valve KV7, a first one-way valve X1, a fourth three-way valve V6, and an oil outlet 6;

[0017] The dewatering and electrostatic adsorption pipeline consists of an oil inlet 5, a first solenoid valve KV1, a first four-way valve V2, a first servo oil pump Y0, an electric heater Y5, a circulation valve X4, a second four-way valve V4, a fourth solenoid valve KV4, a first three-way valve V1, a water absorbent cartridge 1, a fifth three-way valve V8, a sixth solenoid valve KV6, an electrostatic adsorption cartridge 2, a second servo oil pump Y1, a third three-way valve V5, a fourth three-way valve V6, and an oil outlet 6;

[0018] The filter element / water absorbent pipeline is composed of a water absorbent cartridge 1, a first three-way valve V1, a third solenoid valve KV3, a first four-way valve V2, a first servo oil pump Y0, a circulation valve X4, a second four-way valve V4, a third four-way valve V7, a fifth solenoid valve KV5, a second one-way valve X2, a third three-way valve V5, a fourth three-way valve V6, and an oil outlet 6, or is composed of an electrostatic adsorption cartridge 2, a second three-way valve V3, a second solenoid valve KV2, a first four-way valve V2, a first servo oil pump Y0, a circulation valve X4, a second four-way valve V4, a third four-way valve V7, a fifth solenoid valve KV5, a second one-way valve X2, a third three-way valve V5, a fourth three-way valve V6, and an oil outlet 6.

[0019] In a further embodiment, a viscosity measuring unit 7 is provided in the electrostatic adsorption cylinder 2, and the viscosity measuring unit 7 is connected to the second port of the third four-way valve V7 through a ninth solenoid valve KV9.

[0020] In a further embodiment, the vacuum assembly 3 includes: an eighth solenoid valve KV8, a vacuum pump Y2, a second pressure sensor A13, a tenth solenoid valve KV10, an eleventh solenoid valve KV11, and a four-way base;

[0021] One end of the eighth solenoid valve KV8 is connected to the water absorbent cylinder 1, and the other end is connected to the outside. The four-way base is connected to the top of the electrostatic adsorption cylinder 2 through a pipe. One end of the eleventh solenoid valve KV11 is connected to the four-way base, and the other end is connected to one end of the vacuum pump Y2. The other end of the vacuum pump Y2 is to the outside. One end of the tenth solenoid valve KV10 is connected to the four-way base, and the other end is connected to the outside. The second pressure sensor A13 is installed on the four-way base.

[0022] In a further embodiment, a low liquid level float switch X11 and a high liquid level float switch X12 are provided in the water absorbent cartridge 1 .

[0023] In a further embodiment, a low liquid level float switch X5, a middle liquid level float switch X6 and a high liquid level float switch X7 are provided in the electrostatic adsorption cylinder 2.

[0024] An automatic filtering method for preventing emulsification of mineral oil is implemented by using the automatic filtering device for preventing emulsification of mineral oil described above. The automatic filtering method comprises:

[0025] The mineral oil dehydration process is to input the mineral oil through the oil inlet 5, flow into the water absorbent cylinder 1 through the dehydration pipeline to remove water, and flow into the oil outlet 6 through the dehydration pipeline to be output;

[0026] In the process of removing water and electrostatically absorbing mineral oil, the mineral oil is input through the oil inlet 5, first flows into the water absorbent cylinder 1 through the water removal pipeline in the water removal and electrostatically absorbing pipeline to remove water, then flows into the electrostatic absorbing cylinder 2 through the electrostatic absorbing pipeline of the water removal and electrostatically absorbing pipeline to be electrostatically absorbed, and finally flows into the oil outlet 6 through the pipeline for output;

[0027] Filter element / adsorbent replacement process: When replacing the water absorbent of the water absorbent cylinder 1 or the filter element of the electrostatic adsorption cylinder 2, the oil in the water absorbent cylinder 1 or the electrostatic adsorption cylinder 2 is removed through the filter element / water absorbent pipeline and output through the oil outlet 6.

[0028] In a further embodiment, in the mineral oil dehydration process, mineral oil flows in through the oil inlet 5, and at the same time the first solenoid valve KV1 is opened, the mineral oil flows through the first solenoid valve KV1, the first four-way valve V2, the first servo oil pump Y0, the electric heater Y5, the circulation valve X4, the second four-way valve V4 to the fourth solenoid valve KV4, the fourth solenoid valve KV4 is opened, the mineral oil passes through the fourth solenoid valve KV4 and the first three-way valve V1 to the water absorbent cartridge 1, the water absorbent cartridge 1 is dehydrated, after the dehydration is completed, the mineral oil flows through the fifth three-way valve V8 to the seventh solenoid valve KV7, the seventh solenoid valve KV7 is opened, and flows through the first one-way valve X1 of the seventh solenoid valve KV7 and the fourth three-way valve V6 to the oil outlet 6 and flows out.

[0029] In a further embodiment, in the mineral oil dehydration and electrostatic adsorption process, mineral oil flows in through the oil inlet 5, and at the same time the first solenoid valve KV1 is opened, and the mineral oil flows to the fourth solenoid valve KV4 through the first solenoid valve KV1, the first four-way valve V2, the first servo oil pump Y0, the electric heater Y5, the circulation valve X4, and the second four-way valve V4. The fourth solenoid valve KV4 is opened, and the mineral oil is retained in the water absorbent cylinder 1 through the fourth solenoid valve KV4 and the first three-way valve V1. The water absorbent cylinder 1 is dehydrated. After the dehydration is completed, the mineral oil flows to the sixth solenoid valve KV6 through the fifth three-way valve V8. The sixth solenoid valve KV6 is opened, and flows into the electrostatic adsorption cylinder 2 through the sixth solenoid valve KV6. After the electrostatic adsorption is completed, it flows to the oil outlet 6 through the second servo oil pump Y1, the third three-way valve V5, and the fourth three-way valve V6.

[0030] Beneficial effects: The automatic filtering device of the present invention can prevent emulsification and demulsification of mineral oil. Through the water absorbent cartridge 1, the electrostatic adsorption cartridge 2, the vacuum assembly 3, and the connecting pipeline assembly, two modes of water removal and water removal and electrostatic adsorption can be realized, which can adapt to different working occasions. At the same time, when the filter element / adsorbent is replaced, the oil in the water absorbent cartridge 1 and the electrostatic adsorption cartridge 2 can be cleaned, thereby greatly improving the working capacity of the water absorbent cartridge 1 and the electrostatic adsorption cartridge 2. Therefore, the present invention can remove the water content in the mineral oil, thereby ensuring that the water content of the mineral oil meets the national standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention.

[0032] Figure 2 It is a schematic diagram of the method of the present invention.

[0033] Reference numerals: water absorbent cylinder 1 , electrostatic adsorption cylinder 2 , vacuum assembly 3 , oil inlet 5 , oil outlet 6 , viscosity measuring unit 7 . DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1:

[0036] An automatic filtering device for preventing mineral oil from emulsification, comprising: a water absorbent cylinder 1, an electrostatic adsorption cylinder 2, a vacuum component 3, a connecting pipeline component, an oil inlet 5 and an oil outlet 6;

[0037] In one embodiment, Figure 1 As shown, the input end of the connecting pipeline assembly is connected to the oil inlet 5, and the output end is connected to the oil outlet 6. The connecting pipeline assembly is simultaneously connected to the water absorbent cylinder 1 and the electrostatic adsorption cylinder 2 so that the water absorbent cylinder 1 and the electrostatic adsorption cylinder 2 are connected to the oil inlet 5 and the oil outlet 6. The vacuum assembly 3 is simultaneously connected to the water absorbent cylinder 1 and the electrostatic adsorption cylinder 2.

[0038] In one embodiment, Figure 1As shown, the connecting pipeline assembly includes: a first solenoid valve KV1, a second solenoid valve KV2, a third solenoid valve KV3, a fourth solenoid valve KV4, a fifth solenoid valve KV5, a sixth solenoid valve KV6, a seventh solenoid valve KV7, a first three-way valve V1, a second three-way valve V3, a third three-way valve V5, a fourth three-way valve V6, a fifth three-way valve V8, a first four-way valve V2, a second four-way valve V4, a third four-way valve V7, a first servo oil pump Y0, an electric heater Y5, a circulation valve X4, a second one-way valve X2, a first one-way valve X1, a second servo oil pump Y1, a temperature sensor A15, and a first pressure sensor A12;

[0039] One end of the first solenoid valve KV1 is connected to the oil inlet 5, and the other end is connected to the port 1 of the first four-way valve V2. One end of the second solenoid valve KV2 is connected to the port 2 of the first four-way valve V2, and the other end is connected to the port 1 of the second three-way valve V3. The port 2 of the second three-way valve V3 is connected to the electrostatic adsorption cylinder 2. One end of the third solenoid valve KV3 is connected to the port 3 of the first four-way valve V2, and the other end is connected to the port 1 of the first three-way valve V1. The port 2 of the first three-way valve V1 is connected to the water absorbent cylinder 1. One end of the servo oil pump Y0 is connected to the 4th port of the first four-way valve V2, and the other end is connected to one end of the electric heater Y5. One end of the circulation valve X4 is connected to the other end of the electric heater Y5. The 1st port of the second four-way valve V4 is connected to the other end of the circulation valve X4. The 2nd port of the second four-way valve V4 is connected to the temperature sensor A15. The 3rd port of the second four-way valve V4 is connected to one end of the fourth solenoid valve KV4. The 4th port of the second four-way valve V4 is connected to the 1st port of the third four-way valve V7. The 3rd port of the third four-way valve V7 is connected to the first pressure The sensor A12 is connected, the 4th port of the third four-way valve V7 is connected to one end of the fifth solenoid valve KV5, the other end of the fourth solenoid valve KV4 is connected to the 3rd port of the first three-way valve V1, the other end of the fifth solenoid valve KV5 is connected to one end of the second one-way valve X2, the 1st port of the fifth three-way valve V8 is connected to the water absorbent cartridge 1, the 2nd port of the fifth three-way valve V8 is connected to one end of the sixth solenoid valve KV6, the 3rd port of the fifth three-way valve V8 is connected to one end of the seventh solenoid valve KV7, the other end of the sixth solenoid valve KV6 is connected to the One end is connected with the electrostatic adsorption cylinder 2, the other end of the seventh solenoid valve KV7 is connected with one end of the third solenoid valve X1, one end of the second servo oil pump Y1 is connected with the electrostatic adsorption cylinder, and the other end is connected with port 1 of the third three-way valve V5, port 2 of the third three-way valve V5 is connected with the other end of the second one-way valve X2, port 3 of the third three-way valve V5 is connected with port 1 of the fourth three-way valve V6, port 2 of the fourth three-way valve V6 is connected with port 2 of the first one-way valve X1, and port 3 of the fourth three-way valve V6 is connected with the oil outlet 6.

[0040] In one embodiment, Figure 1 As shown, the connecting pipeline assembly is divided into a water removal pipeline, a water removal and electrostatic adsorption pipeline, and a filter element replacement / water absorbent pipeline;

[0041] The dewatering pipeline is composed of an oil inlet 5, a first solenoid valve KV1, a first four-way valve V2, a first servo oil pump Y0, an electric heater Y5, a circulation valve X4, a second four-way valve V4, a fourth solenoid valve KV4, a first three-way valve V1, a water-absorbing agent cartridge 1, a fifth three-way valve V8, a seventh solenoid valve KV7, a first one-way valve X1, a fourth three-way valve V6, and an oil outlet 6;

[0042] The dewatering and electrostatic adsorption pipeline consists of an oil inlet 5, a first solenoid valve KV1, a first four-way valve V2, a first servo oil pump Y0, an electric heater Y5, a circulation valve X4, a second four-way valve V4, a fourth solenoid valve KV4, a first three-way valve V1, a water absorbent cartridge 1, a fifth three-way valve V8, a sixth solenoid valve KV6, an electrostatic adsorption cartridge 2, a second servo oil pump Y1, a third three-way valve V5, a fourth three-way valve V6, and an oil outlet 6;

[0043] The filter element / water absorbent pipeline is composed of a water absorbent cartridge 1, a first three-way valve V1, a third solenoid valve KV3, a first four-way valve V2, a first servo oil pump Y0, a circulation valve X4, a second four-way valve V4, a third four-way valve V7, a fifth solenoid valve KV5, a second one-way valve X2, a third three-way valve V5, a fourth three-way valve V6, and an oil outlet 6, or is composed of an electrostatic adsorption cartridge 2, a second three-way valve V3, a second solenoid valve KV2, a first four-way valve V2, a first servo oil pump Y0, a circulation valve X4, a second four-way valve V4, a third four-way valve V7, a fifth solenoid valve KV5, a second one-way valve X2, a third three-way valve V5, a fourth three-way valve V6, and an oil outlet 6.

[0044] In one embodiment, Figure 1 As shown, the electrostatic adsorption cylinder 2 is provided with a viscosity measuring unit 7, and the viscosity measuring unit 7 is connected to the second port of the third four-way valve V7 through the ninth solenoid valve KV9.

[0045] In one embodiment, Figure 1 As shown, the vacuum assembly 3 includes: an eighth solenoid valve KV8, a vacuum pump Y2, a second pressure sensor A13, a tenth solenoid valve KV10, an eleventh solenoid valve KV11, and a four-way base 3;

[0046] One end of the eighth solenoid valve KV8 is connected to the water absorbent cylinder 1, and the other end is connected to the outside. The four-way base 3 is connected to the top of the electrostatic adsorption cylinder 2 through a pipe. One end of the eleventh solenoid valve KV11 is connected to the four-way base 3, and the other end is connected to one end of the vacuum pump Y2. The other end of the vacuum pump Y2 is to the outside. One end of the tenth solenoid valve KV10 is connected to the four-way base 3, and the other end is connected to the outside. The second pressure sensor A13 is installed on the four-way base 3.

[0047] In one embodiment, the water absorbent cartridge 1 is provided with a low liquid level float switch X11 and a high liquid level float switch X12.

[0048] In one embodiment, the electrostatic adsorption cylinder 2 is provided with a low liquid level float switch X5, a middle liquid level float switch X6 and a high liquid level float switch X7.

[0049] Embodiment 2:

[0050] An automatic filtering method for preventing emulsification of mineral oil is implemented by using an automatic filtering device for preventing emulsification of mineral oil. The automatic filtering method comprises:

[0051] The mineral oil dehydration process is to input the mineral oil through the oil inlet 5, flow into the water absorbent cylinder 1 through the dehydration pipeline to remove water, and flow into the oil outlet 6 through the dehydration pipeline to be output;

[0052] In the process of removing water and electrostatically absorbing mineral oil, the mineral oil is input through the oil inlet 5, first flows into the water absorbent cylinder 1 through the water removal pipeline in the water removal and electrostatically absorbing pipeline to remove water, then flows into the electrostatic absorbing cylinder 2 through the electrostatic absorbing pipeline of the water removal and electrostatically absorbing pipeline to be electrostatically absorbed, and finally flows into the oil outlet 6 through the pipeline for output;

[0053] Filter element / adsorbent replacement process: When replacing the water absorbent of the water absorbent cylinder 1 or the filter element of the electrostatic adsorption cylinder 2, the oil in the water absorbent cylinder 1 or the electrostatic adsorption cylinder 2 is removed through the filter element / water absorbent pipeline and output through the oil outlet 6.

[0054] In one embodiment, Figure 1 and Figure 2As shown, in the mineral oil dehydration process, mineral oil flows in through the oil inlet 5, and at the same time, the first solenoid valve KV1 is opened, and the mineral oil flows to the fourth solenoid valve KV4 through the first solenoid valve KV1, the first four-way valve V2, the first servo oil pump Y0, the electric heater Y5, the circulation valve X4, and the second four-way valve V4. The fourth solenoid valve KV4 is opened, and the mineral oil is retained in the water absorbent cartridge 1 through the fourth solenoid valve KV4 and the first three-way valve V1. The water absorbent cartridge 1 is dehydrated. After the dehydration is completed, the mineral oil flows to the seventh solenoid valve KV7 through the fifth three-way valve V8. The seventh solenoid valve KV7 is opened, and flows to the oil outlet 6 through the first one-way valve X1 and the fourth three-way valve V6 of the seventh solenoid valve KV7.

[0055] In one embodiment, Figure 1 and Figure 2 As shown, in the mineral oil dehydration and electrostatic adsorption process, mineral oil flows in through the oil inlet 5, and at the same time the first solenoid valve KV1 is opened, and the mineral oil flows to the fourth solenoid valve KV4 through the first solenoid valve KV1, the first four-way valve V2, the first servo oil pump Y0, the electric heater Y5, the circulation valve X4, and the second four-way valve V4. The fourth solenoid valve KV4 is opened, and the mineral oil is retained in the water absorbent cylinder 1 through the fourth solenoid valve KV4 and the first three-way valve V1. The water absorbent cylinder 1 is dehydrated. After the dehydration is completed, the mineral oil flows to the sixth solenoid valve KV6 through the fifth three-way valve V8. The sixth solenoid valve KV6 is opened, and flows into the electrostatic adsorption cylinder 2 through the sixth solenoid valve KV6. After the electrostatic adsorption is completed, it flows to the oil outlet 6 through the second servo oil pump Y1, the third three-way valve V5, and the fourth three-way valve V6.

[0056] The working principle of the present invention is divided into the following four processes:

[0057] 1. Mineral oil dewatering process

[0058] First, when working, the eighth solenoid valve KV8 works to connect the water absorbent cylinder 1 with the outside, air enters the water absorbent cylinder 1, and mineral oil is input through the oil inlet 5. At the same time, the first solenoid valve KV1 is opened, and the mineral oil flows to the fourth solenoid valve KV4 through the first solenoid valve KV1, the first four-way valve V2, the first servo oil pump Y0, the electric heater Y5 (heating is performed at this time, and the temperature sensor A15 detects the temperature), the circulation valve X4, and the second four-way valve V4. The fourth solenoid valve KV4 is opened, and the mineral oil is retained in the water absorbent cylinder 1 through the fourth solenoid valve KV4 and the first three-way valve V1. When the mineral oil reaches the low liquid level float switch X11, the eighth solenoid valve KV8 is closed, and the water absorbent cylinder 1 is dehydrated. After the dehydration is completed, the mineral oil flows to the seventh solenoid valve KV7 through the fifth three-way valve V8. The seventh solenoid valve KV7 is opened, and flows to the oil outlet 6 through the first one-way valve X1 and the fourth three-way valve V6 of the seventh solenoid valve KV7.

[0059] 2. Mineral oil dehydration + electrostatic adsorption process

[0060] First, when working, the eighth solenoid valve KV8 works, and the water absorbent cylinder 1 is connected with the outside, and air enters the water absorbent cylinder 1. The tenth solenoid valve KV10 is opened, and the electrostatic adsorption cylinder 2 is connected with the outside, and air enters the electrostatic adsorption cylinder 2. Mineral oil is input through the oil inlet 5. At the same time, the first solenoid valve KV1 is opened, and the mineral oil passes through the first solenoid valve KV1, the first four-way valve V2, the first servo oil pump Y0, the electric heater Y5 (heating is performed at this time, and the temperature sensor A15 detects the temperature), the circulation valve X4, and the second four-way valve V4 to the fourth solenoid valve KV4. The fourth solenoid valve KV4 is opened, and the mineral oil passes through the fourth solenoid valve KV4, the first four-way valve V2, the first servo oil pump Y0, the electric heater Y5 (heating is performed at this time, and the temperature sensor A15 detects the temperature), the circulation valve X4, and the second four-way valve V4 to the fourth solenoid valve KV4. The first three-way valve V1 is retained in the water absorbent cylinder 1. When the mineral oil reaches the low liquid level float switch X11, the eighth solenoid valve KV8 is closed, and the water absorbent cylinder 1 is dehydrated. After the dehydration is completed, the mineral oil flows to the sixth solenoid valve KV6 through the fifth three-way valve V8. The sixth solenoid valve KV6 is opened and flows into the electrostatic adsorption cylinder 2. When the mineral oil reaches the low liquid level float switch X5, the tenth solenoid valve KV10 is closed, and the vacuum pump Y2 and the eleventh solenoid valve KV11 work to extract the air in the electrostatic adsorption cylinder 2 and perform electrostatic adsorption at the same time. After the electrostatic adsorption is completed, it flows to the oil outlet 6 through the second servo oil pump Y1, the third three-way valve V5, and the fourth three-way valve V6.

[0061] 3. Viscosity testing process

[0062] When there is mineral oil in the electrostatic adsorption cylinder 2, the second solenoid valve KV2 is opened, and the mineral oil in the electrostatic adsorption cylinder 2 flows to the ninth solenoid valve KV9 through the first four-way valve V2, the first servo oil pump Y0, the electric heater Y5 (heating is performed at this time, and the temperature sensor A15 detects the temperature), the circulation valve X4, the second four-way valve V4, and the third four-way valve V7. The ninth solenoid valve KV9 opens and flows into the viscosity detection unit, and the viscosity is calculated in the PLC program according to the pressure of the first pressure sensor A12.

[0063] 4. Water absorbent / filter element replacement process

[0064] When this process is carried out, the electric heater Y5 does not work, and only performs a circulation function; when the water absorbent in the water absorbent cartridge 1 is replaced, the mineral oil in the water absorbent cartridge 1 flows to the third solenoid valve KV3 through the first three-way valve V1, the third solenoid valve KV3 is opened, and flows through the first four-way valve V2, the first servo oil pump Y0, the electric heater Y5 (no heating is performed at this time), the circulation valve X4, the second four-way valve V4, the third four-way valve V7 to the fifth solenoid valve KV5, the fifth solenoid valve KV5 is opened, and flows through the second one-way valve X2, the third three-way valve V5, and the fourth three-way valve V5 to the oil outlet 6 to flow out (this process needs to be performed two to three times);

[0065] When the filter element in the electrostatic adsorption cylinder 2 is replaced, the mineral oil in the electrostatic adsorption cylinder 2 flows to the second solenoid valve KV2 through the second three-way valve V3, the second solenoid valve KV2 opens, and passes through the first four-way valve V2, the first servo oil pump Y0, the electric heater Y5 (no heating is performed at this time), the flow valve X4, the second four-way valve V4, the third four-way valve V7 to the fifth solenoid valve KV5, the fifth solenoid valve KV5 opens, and flows through the second one-way valve X2, the third three-way valve V5, and the fourth three-way valve V5 to the oil outlet 6 (this process needs to be performed two to three times).

[0066] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An automatic filtering device for preventing emulsification of mineral oil, characterized in that: The automatic filtering device comprises: a water absorbent cartridge 1, an electrostatic adsorption cartridge 2, a vacuum assembly 3, a connecting pipeline assembly, an oil inlet 5 and an oil outlet 6; The input end of the connecting pipeline assembly is connected to the oil inlet 5, and the output end is connected to the oil outlet 6. The connecting pipeline assembly is connected to the water absorbent cylinder 1 and the electrostatic adsorption cylinder 2 at the same time so that the water absorbent cylinder 1 and the electrostatic adsorption cylinder 2 are connected to the oil inlet 5 and the oil outlet 6, and the vacuum assembly 3 is connected to the electrostatic adsorption cylinder 2; An eighth solenoid valve KV8 is disposed on the top of the water absorbent cartridge 1 , one end of the eighth solenoid valve KV8 is connected to the water absorbent cartridge 1 , and the other end of the eighth solenoid valve KV8 is connected to the air.

2. The automatic filtering device for preventing emulsification of mineral oil according to claim 1, characterized in that: The connecting pipeline assembly includes: a first solenoid valve KV1, a second solenoid valve KV2, a third solenoid valve KV3, a fourth solenoid valve KV4, a fifth solenoid valve KV5, a sixth solenoid valve KV6, a seventh solenoid valve KV7, a first three-way valve V1, a second three-way valve V3, a third three-way valve V5, a fourth three-way valve V6, a fifth three-way valve V8, a first four-way valve V2, a second four-way valve V4, a third four-way valve V7, a first servo oil pump Y0, an electric heater Y5, a circulation valve X4, a second one-way valve X2, a first one-way valve X1, a second servo oil pump Y1, a temperature sensor A15, and a first pressure sensor A12; One end of the first solenoid valve KV1 is connected to the oil inlet 5, and the other end is connected to the port 1 of the first four-way valve V2. One end of the second solenoid valve KV2 is connected to the port 2 of the first four-way valve V2, and the other end is connected to the port 1 of the second three-way valve V3. The port 2 of the second three-way valve V3 is connected to the electrostatic adsorption cylinder 2. One end of the third solenoid valve KV3 is connected to the port 3 of the first four-way valve V2, and the other end is connected to the port 1 of the first three-way valve V1. The port 2 of the first three-way valve V1 is connected to the water absorbent cylinder 1. One end of the servo oil pump Y0 is connected to the 4th port of the first four-way valve V2, and the other end is connected to one end of the electric heater Y5. One end of the circulation valve X4 is connected to the other end of the electric heater Y5. The 1st port of the second four-way valve V4 is connected to the other end of the circulation valve X4. The 2nd port of the second four-way valve V4 is connected to the temperature sensor A15. The 3rd port of the second four-way valve V4 is connected to one end of the fourth solenoid valve KV4. The 4th port of the second four-way valve V4 is connected to the 1st port of the third four-way valve V7. The 3rd port of the third four-way valve V7 is connected to the first pressure The sensor A12 is connected, the 4th port of the third four-way valve V7 is connected to one end of the fifth solenoid valve KV5, the other end of the fourth solenoid valve KV4 is connected to the 3rd port of the first three-way valve V1, the other end of the fifth solenoid valve KV5 is connected to one end of the second one-way valve X2, the 1st port of the fifth three-way valve V8 is connected to the water absorbent cartridge 1, the 2nd port of the fifth three-way valve V8 is connected to one end of the sixth solenoid valve KV6, the 3rd port of the fifth three-way valve V8 is connected to one end of the seventh solenoid valve KV7, the other end of the sixth solenoid valve KV6 is connected to the One end is connected with the electrostatic adsorption cylinder 2, the other end of the seventh solenoid valve KV7 is connected with one end of the third solenoid valve X1, one end of the second servo oil pump Y1 is connected with the electrostatic adsorption cylinder 2, and the other end is connected with port 1 of the third three-way valve V5, port 2 of the third three-way valve V5 is connected with the other end of the second one-way valve X2, port 3 of the third three-way valve V5 is connected with port 1 of the fourth three-way valve V6, port 2 of the fourth three-way valve V6 is connected with port 2 of the first one-way valve X1, and port 3 of the fourth three-way valve V6 is connected with the oil outlet 6.

3. The automatic filtering device for preventing emulsification of mineral oil according to claim 2, characterized in that: The connecting pipeline assembly is divided into a water removal pipeline, an electrostatic adsorption pipeline, and a filter element replacement / water absorbent pipeline; The dewatering pipeline is composed of an oil inlet 5, a first solenoid valve KV1, a first four-way valve V2, a first servo oil pump Y0, an electric heater Y5, a circulation valve X4, a second four-way valve V4, a fourth solenoid valve KV4, a first three-way valve V1, a water-absorbing agent cartridge 1, a fifth three-way valve V8, a seventh solenoid valve KV7, a first one-way valve X1, a fourth three-way valve V6, and an oil outlet 6; The dewatering and electrostatic adsorption pipeline consists of an oil inlet 5, a first solenoid valve KV1, a first four-way valve V2, a first servo oil pump Y0, an electric heater Y5, a circulation valve X4, a second four-way valve V4, a fourth solenoid valve KV4, a first three-way valve V1, a water absorbent cartridge 1, a fifth three-way valve V8, a sixth solenoid valve KV6, an electrostatic adsorption cartridge 2, a second servo oil pump Y1, a third three-way valve V5, a fourth three-way valve V6, and an oil outlet 6; The filter element / water absorbent pipeline is composed of a water absorbent cartridge 1, a first three-way valve V1, a third solenoid valve KV3, a first four-way valve V2, a first servo oil pump Y0, a circulation valve X4, a second four-way valve V4, a third four-way valve V7, a fifth solenoid valve KV5, a second one-way valve X2, a third three-way valve V5, a fourth three-way valve V6, and an oil outlet 6, or is composed of an electrostatic adsorption cartridge 2, a second three-way valve V3, a second solenoid valve KV2, a first four-way valve V2, a first servo oil pump Y0, a circulation valve X4, a second four-way valve V4, a third four-way valve V7, a fifth solenoid valve KV5, a second one-way valve X2, a third three-way valve V5, a fourth three-way valve V6, and an oil outlet 6.

4. The automatic filtering device for preventing emulsification of mineral oil according to claim 2, characterized in that: The electrostatic adsorption cylinder 2 is provided with a viscosity measuring unit 7 outside, and the viscosity measuring unit 7 is connected to the third four-way valve V7 through a ninth solenoid valve KV9.

5. The automatic filtering device for preventing emulsification of mineral oil according to claim 1, characterized in that: The vacuum assembly 3 includes: a vacuum pump Y2, a second pressure sensor A13, a tenth solenoid valve KV10, an eleventh solenoid valve KV11, and a four-way base; The four-way base is connected to the top of the electrostatic adsorption cylinder 2 through a pipe, one end of the eleventh solenoid valve KV11 is connected to the four-way base, and the other end is connected to one end of the vacuum pump Y2, and the other end of the vacuum pump Y2 is connected to the external air, one end of the tenth solenoid valve KV10 is connected to the four-way base, and the other end is connected to the external air, and the second pressure sensor A13 is installed on the four-way base.

6. The automatic filtering device for preventing emulsification of mineral oil according to claim 1, characterized in that: The water absorbent cartridge 1 is provided with a low liquid level float switch X11 and a high liquid level float switch X12.

7. The automatic filtering device for preventing emulsification of mineral oil according to claim 1, characterized in that: The electrostatic adsorption cylinder 2 is provided with a low liquid level float switch X5, a middle liquid level float switch X6 and a high liquid level float switch X7.

8. An automatic filtration method for preventing emulsification of mineral oil, characterized in that: The method is implemented by using an automatic filtering device for preventing emulsification of mineral oil according to any one of claims 1 to 7, wherein the automatic filtering method comprises: The mineral oil dehydration process is to input the mineral oil through the oil inlet 5, flow into the water absorbent cylinder 1 through the dehydration pipeline to remove water, and flow into the oil outlet 6 through the dehydration pipeline to be output; The mineral oil dehydration and electrostatic adsorption process is as follows: the mineral oil is input through the oil inlet 5, first flows into the water absorbent cylinder 1 through the dehydration pipeline to remove water, then flows into the electrostatic adsorption cylinder 2 through the electrostatic adsorption pipeline to be electrostatically adsorbed, and finally flows into the oil outlet 6 through the pipeline for output; Filter element / adsorbent replacement process: When replacing the water absorbent of the water absorbent cylinder 1 or the filter element of the electrostatic adsorption cylinder 2, the oil in the water absorbent cylinder 1 and the electrostatic adsorption cylinder 2 is removed through the filter element / water absorbent pipeline and output through the oil outlet 6.

9. The automatic filtering method for preventing emulsification of mineral oil according to claim 8, characterized in that: In the mineral oil dehydration process, mineral oil flows in through the oil inlet 5, and at the same time, the first solenoid valve KV1 is opened, and the mineral oil flows to the fourth solenoid valve KV4 through the first solenoid valve KV1, the first four-way valve V2, the first servo oil pump Y0, the electric heater Y5, the circulation valve X4, and the second four-way valve V4. The fourth solenoid valve KV4 is opened, and the mineral oil is retained in the water absorbent cylinder 1 through the fourth solenoid valve KV4 and the first three-way valve V1. The water absorbent cylinder 1 is dehydrated. After the dehydration is completed, the mineral oil flows to the seventh solenoid valve KV7 through the fifth three-way valve V8. The seventh solenoid valve KV7 is opened, and flows to the oil outlet 6 through the first one-way valve X1 and the fourth three-way valve V6 of the seventh solenoid valve KV7.

10. The automatic filtering method for preventing emulsification of mineral oil according to claim 8, characterized in that: In the mineral oil dehydration and electrostatic adsorption process, mineral oil flows in through the oil inlet 5, and at the same time the first solenoid valve KV1 is opened, and the mineral oil flows to the fourth solenoid valve KV4 through the first solenoid valve KV1, the first four-way valve V2, the first servo oil pump Y0, the electric heater Y5, the circulation valve X4, and the second four-way valve V4. The fourth solenoid valve KV4 is opened, and the mineral oil is retained in the water absorbent cylinder 1 through the fourth solenoid valve KV4 and the first three-way valve V1. The water absorbent cylinder 1 is dehydrated. After the dehydration is completed, the mineral oil flows to the sixth solenoid valve KV6 through the fifth three-way valve V8. The sixth solenoid valve KV6 is opened, and flows into the electrostatic adsorption cylinder 2 through the sixth solenoid valve KV6. After the electrostatic adsorption is completed, it flows to the oil outlet 6 through the second servo oil pump Y1, the third three-way valve V5, and the fourth three-way valve V6.

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