Electrostatic adsorption type oil filtering system

Abstract

The invention relates to the technical field of oil filtering, and discloses an electrostatic adsorption type oil filtering system which comprises a filtering tank, a top cover, an insulating separation barrel, a filter element and an electrostatic adsorption mechanism. An oil inlet is fixedly connected to the lower end of the left side of the filtering tank, an oil outlet is fixedly connected to the upper end of the left side of the filtering tank, and a drain outlet is formed in the lower end of the right side of the filtering tank; a lead port is formed in the upper end of the right side of the filtering tank; a positioning seat is arranged in the middle of the bottom of the inner side of the filtering tank; an extension ring is fixedly arranged at the inner end of the bottom of the top cover downwards; the top cover is mounted at the upper end of the flange plate; the filter element is arranged in the insulating separation barrel, a fixing shaft is fixedly arranged in the middle of the interior of the filter element, and the bottom of the fixing shaft extends downwards to be installed in the positioning seat; the electrostatic adsorption mechanism is arranged at the upper part in the insulating separation barrel and is mounted above the filter element. Compared with a traditional filter element, the filtering precision is greatly improved, particle impurities and water in oil are charged and adsorbed and separated, and the filtering and purifying effect is improved.

Description

Technical Field

[0001] The present invention relates to the field of oil filtration technology, and in particular to an electrostatic adsorption oil filtration system. Background Technology

[0002] Power plant operating oil will be affected by factors such as moisture, impurities, temperature, etc. during equipment operation, resulting in oil aging and failure of key indicators such as moisture, particle size, acid value, demulsification, resistivity, etc., which seriously affects the safe operation of on-site units.

[0003] Currently, commonly used treatment methods include vacuum separation, resin adsorption, electrostatic filtration, etc., but they all have their own limitations. Vacuum separation is mostly used for dehydration, but cannot handle soluble aging products; resin filter elements will produce additional moisture during use; traditional electrostatic filtration cannot effectively filter acidic products. Traditional oil filtration technology mainly relies on mechanical interception or single adsorption, and the filtering and purification effect is poor. Therefore, it is necessary to design corresponding technical solutions to solve this problem. SUMMARY OF THE INVENTION

[0004] Aiming at the deficiencies of the prior art, the present invention provides an electrostatic adsorption oil filtration system to solve the technical problems.

[0005] To achieve the above purpose, the present invention is implemented through the following technical solutions: an electrostatic adsorption oil filter system, including a filter tank, a top cover, an insulating separation barrel, a filter element and an electrostatic adsorption mechanism, the left lower end of the filter tank is fixedly connected with an oil inlet, the left upper end of the filter tank is fixedly connected with an oil outlet, the right lower end of the filter tank is provided with a sewage outlet, the right upper end of the filter tank is provided with a lead-in port, the upper and lower ends of the filter tank are fixedly provided with flange plates, and a positioning seat is provided at the middle of the inner bottom of the filter tank; The top of the top cover is provided with a raised structure, the bottom inner end of the top cover is fixed downward with an extension ring, and the top cover is installed on the upper end of the flange plate; The filter element is arranged inside the insulating partition barrel, a fixed shaft is fixed in the middle of the filter element, and the bottom of the fixed shaft extends downward and is installed inside the positioning seat; The electrostatic adsorption mechanism is arranged above the interior of the insulating partition barrel and installed above the filter element.

[0006] Preferably, the insulating separation barrel has a symmetrical structure with a threading port near the upper end, an insulating support plate is fixedly provided at the bottom of the insulating separation barrel, a through hole is provided in the middle of the insulating support plate, and fixing grooves are evenly distributed on the upper end of the insulating support plate; the insulating separation barrel has the function of isolating the filter tank from the filter element, the threading port is used to facilitate threading or disassembly, the fixing groove is used to fix and clamp multiple groups of cylindrical metal separation cylinders, the through hole is used to penetrate the locking fixed shaft, and the insulating support plate is used to insulate and support the filter element.

[0007] Preferably, the filter element includes a metal separator and a folded filter paper structure. The metal separator is a plurality of groups of cylindrical structures which are arranged in sequence, and the folded filter paper structures are filled and arranged between the metal separators respectively; the metal separator is made of stainless steel, and the folded filter paper structure adopts DMD insulating paper, and the thickness of the metal separator is 0.8 mm; the folded filter paper structure is serrated and the folds extend in the vertical direction, and the gaps in the folded filter paper structure are filled with a strong polar adsorption material, and the strong polar adsorption material is a strong polar macroporous spherical molecular sieve adsorbent; the special action mechanism and critical adsorption effect between molecules are utilized for selective purification, and the adsorption capacity is much higher than other traditional adsorbents. The 0.8 mm stainless steel metal separator is corrosion-resistant and durable, and the DMD insulating paper is a three-layer soft composite material made of polyester film coated with adhesive and polyester fiber non-woven fabric bonded on both sides, and has good insulation effect.

[0008] Preferably, the electrostatic adsorption mechanism is a cross-shaped covering electrostatic adsorption mechanism, which includes a cross-shaped covering member, a collar and a first electrostatic adsorption mechanism, wherein the collar is fixedly arranged on the outer upper end of the fixed shaft, the cross-shaped covering member is fixedly arranged on the outer side wall of the collar, and the cross-shaped covering member and the collar are both pressed on the top of the filter element, and the first electrostatic adsorption mechanism is electrically connected to the inside of the filter element through the cross-shaped covering member; the collar is used to be sleeved on the outside of the fixed shaft, the cross-shaped covering member is used to cover the top of the fixed filter element, and the first electrostatic adsorption mechanism is located above the cross-shaped covering member to perform electrostatic adsorption on the filter element.

[0009] Preferably, the first electrostatic adsorption mechanism is composed of a power supply line 1, a power supply ring, an extension plate, an electrode clamp plate 1 and an electrode clamp plate 2. The lower end of the power supply line 1 is connected to the top of the power supply ring, and the upper end of the power supply line 1 is connected to the threading port. A support rod 1 is fixedly provided at the bottom of the power supply ring, and the electrode clamp plate 1 is fixedly provided at the lower end of the support rod 1; the extension plate is fixedly distributed on the outer side wall of the power supply ring, and a support rod 2 is fixedly provided at the bottom of the outer end of the extension plate, and the electrode clamp plate 2 is fixedly provided at the lower end of the support rod 2; the electrode clamp plate 1 and the electrode clamp plate 2 are both N-shaped structures that are clamped on the top of the metal separator; the power supply line 1 is used for power input, the power supply ring is used to fix multiple groups of support rods 1 and electrode clamp plate 1 downward, the extension plate is used to extend and fix support rods 2 and electrode clamp plate 2 to the outer end, and the N-shaped electrode clamp plate 1 and electrode clamp plate 2 are used to contact the top of the metal separator for electrostatic adsorption and oil filtering.

[0010] Preferably, the electrostatic adsorption mechanism is a cross-shaped electrostatic adsorption mechanism, which includes a cross-shaped cover, a support plate, a fixed disk, a fixed ring and a second electrostatic adsorption mechanism. The fixed ring is a circular ring structure of different diameters which is sequentially distributed inside the fixed disk. The support plate is fixedly distributed on the outer side wall of the cross-shaped cover, and the support plate is fixedly arranged on the upper end of the fixed disk and the fixed ring. A slide groove is provided inside the support plate. The second electrostatic adsorption mechanism is slidably connected to the slide groove and extends downward through the gap of the fixed ring. The cross-shaped cover, support plate, fixed disk and fixed ring are used to stably cover the top of the pressed filter element. The fixed ring with circular ring structures of different diameters is used to smoothly pass the oil and is connected through the second electrostatic adsorption mechanism.

[0011] Preferably, the second electrostatic adsorption mechanism is composed of a second power supply line, a power connection line, a support, an electrode sheet, a positioning plate and a limiting slide plate, the positioning plate is of a symmetrical structure and a mounting plate is fixedly provided at the inner end, the mounting plate is docked and installed in the middle of the slide groove, the limiting slide plate is fixedly provided with the outer end of the positioning plate and limitedly slides to the front and rear ends of the support plate, the support is fixedly provided at the outer end of the limiting slide plate, the bottom of the support is fixedly provided with a support rod three, the electrode sheet is fixedly provided at the bottom of the support rod three, the electrode sheet contacts the inner wall of the metal partition tube, the power connection line is electrically connected to the upper end of the support, the lower end of the second power supply line is electrically connected to an adapter, and the upper end of the power connection line is plugged and installed to the front and rear ends of the adapter; the second power supply line, the adapter and the power connection line are used to supply power to the support, the support and the support rod three are used to pass through the gap of the fixing ring to fix the electrode sheet downward, the electrode sheet directly contacts the metal partition tube for electrostatic adsorption and oil filtration, the positioning plate is docked and installed through the mounting plate, the positioning plate and the limiting slide plate are located inside the slide groove and at the positions where electrostatic adsorption is required for stable sliding adjustment of the front and rear ends.

[0012] Preferably, locking bolts and locking nuts are distributed through the two ends of the mounting plate; a support plate is fixedly provided at the lower side of the limiting slide plate at one end, an adapter plate is fixedly provided at the inner end of the support plate, a fixing cylinder is fixedly provided at the middle of the adapter plate, an adjusting screw is connected through the interior of the fixing cylinder by a thread, a rotating plate is fixedly provided at the upper end of the adjusting screw, and the bottom of the adjusting screw is a rounded structure; the locking bolts and locking nuts are used for quick disassembly and assembly of the mounting plate, which is low in cost and simple in operation; the support plate and the adapter plate are used for fixing the fixing cylinder to the inner end, the fixing cylinder is used for adjusting the limiting adjusting screw up and down, the rotating plate is used for hand-held rotation of the adjusting screw, and the rounded structure facilitates stable support and locking to the inside of the slide slot to prevent it from sliding easily.

[0013] Compared with the prior art, the present invention has the following beneficial effects: the system introduces the electric field polarization effect, so that particulate impurities, moisture and acidic molecules in the oil migrate in a directional manner under the action of the electric field, forming a secondary purification path of "electric field pre-separation-medium adsorption enhancement"; the electric field generating component enables the micron-sized particles (1-10μm) in the oil to obtain a saturated charge, and is accelerated to migrate to the surface of the folded filter paper under the action of the Coulomb force, which can increase the particle capture efficiency by 40%-60%, greatly improving the filtration accuracy compared with the traditional filter element; the highly polar macroporous spherical molecular sieve adsorbent produces a critical adsorption effect under the action of the electric field gradient, and its surface potential distribution forms a synergistic effect with the electric field direction. When the oil flows through the fold depression area, the local electric field strength increases, so that the acidic molecules are arranged in a directional manner and break through the mass transfer resistance of the traditional adsorbent, and the measured acid value purification efficiency is increased by 35%-50%; The electrostatic adsorption mechanism of the system adopts a cross-shaped electrostatic adsorption mechanism or a cross-shaped electrostatic adsorption mechanism, and adopts different electrostatic adsorption oil filtration modes to solve the technical bottlenecks of uneven electric field distribution and easy short circuit of electrodes in traditional electrostatic oil removal equipment. The cross-shaped electrostatic adsorption mechanism generates a uniform electric field on the filter element, so that the particle charging efficiency reaches 92%-95%. The cross-shaped electrostatic adsorption mechanism breaks through the traditional uniform electric field theory framework through the gradient electric field design, and realizes the synergistic conversion efficiency of "electric field energy-adsorption energy" increased by 22%-35%. The electrostatic adsorption mechanism charges the particulate impurities and water in the oil and is adsorbed and separated, and cooperates with the strong polar adsorbent to adsorb the degraded acidic products in the oil to improve the filtering and purification effect. Brief Description of the Figures

[0014] Figure 1 is a schematic diagram of the structure of the filter tank from the upper right front portion of the present invention; Figure 2 is a schematic diagram of the structure of the filter tank from the lower left perspective of the front part of the present invention; Figure 3 It is a schematic diagram of the structure of the filter tank of the present invention from the upper left front view after the top cover is removed; Figure 4 It is a schematic diagram of the structure of the filter tank of the present invention from the upper right front view after the top cover is removed; Figure 5 It is a schematic diagram of the internal upper structure of the filter tank of the present invention after the top cover is removed; Figure 6 is a schematic diagram of the structure below the top cover of the present invention; Figure 7 is a schematic diagram of the structure above the top cover of the present invention; Figure 8 It is a schematic diagram of the structure of the filter element inside the insulating partition barrel of the present invention and the cross-shaped electrostatic adsorption mechanism above; Figure 9 is a schematic diagram of the upper structure of the cross-shaped cover of the present invention;​ Figure 10 is a schematic diagram of the cross-shaped covering electrostatic adsorption mechanism of the present invention; Figure 11 For the present invention Figure 10 The enlarged structural diagram at A in the middle; Figure 12 It is a schematic diagram of the structure of the filter element inside the insulating partition barrel of the present invention and the M-shaped electrostatic adsorption mechanism above; Figure 13 It is a schematic diagram of the cross-shaped electrostatic adsorption mechanism of the present invention; Figure 14 is a schematic structural diagram of one end of the second electrostatic adsorption mechanism of the present invention; Figure 15 For the present invention Figure 14 Enlarged structural diagram at B in the middle; Figure 16 For the present invention Figure 15 Enlarged structural diagram at C in the middle; Figure 17 is a schematic diagram of the other end structure of the second electrostatic adsorption mechanism of the present invention; Figure 18 is a schematic diagram of the lower structure of the insulating partition barrel of the present invention; Figure 19 It is a schematic diagram of the partial structure of the insulating support plate at the lower end of the insulating partition barrel of the present invention; Figure 20 is a schematic diagram of the local structure of the filter element of the present invention; Figure 21 This is a schematic diagram comparing oil samples before and after the treatment of the present invention.

[0015] In the figure, 1, filter tank; 11, oil inlet; 12, oil outlet; 13, sewage outlet; 14, lead-in port; 15, flange plate; 16, positioning seat; 2, top cover; 21, extension ring; 22, raised structure; 3, insulating partition barrel; 31, threading port; 32, insulating support plate; 321, through hole; 322, fixed groove; 4, filter element; 41, fixed axis; 42, metal spacer; 43, folded filter paper structure; 5, cross-shaped covering electrostatic adsorption mechanism; 50, cross-shaped covering member; 51, sleeve ring; 52, power supply line 1; 53, power supply ring; 54, extension plate; 55, support rod 1; 56, support Rod 2; 57, electrode clamp 1; 58, electrode clamp 2; 6, M-shaped cover electrostatic adsorption mechanism; 61, M-shaped cover; 62, support plate; 621, slide; 63, fixed plate; 64, fixed ring; 65, power supply line 2; 651, adapter; 66, power connection line; 67, support; 671, support rod 3; 672, electrode sheet; 68, positioning plate; 681, mounting plate; 6811, locking bolt; 6812, locking nut; 682, limit slide plate; 69, support plate; 691, adapter plate; 692, fixing cylinder; 693, adjusting screw; 694, rotating plate. Specific implementation method

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

[0017] Please refer to Figure 1-21 , the embodiment of the present invention provides a technical solution: an electrostatic adsorption oil filter system, comprising a filter tank 1, a top cover 2, an insulating partition barrel 3, a filter element 4 and an electrostatic adsorption mechanism, the left lower end of the filter tank 1 is fixedly connected with an oil inlet 11, the left upper end of the filter tank 1 is fixedly connected with an oil outlet 12, the right lower end of the filter tank 1 is provided with a sewage outlet 13, the right upper end of the filter tank 1 is provided with a lead-in port 14, the upper and lower ends of the filter tank 1 are fixedly provided with flange plates 15, and a positioning seat 16 is provided at the middle of the inner bottom of the filter tank 1; A raised structure 22 is provided on the top of the top cover 2, and an extension ring 21 is fixed downwardly at the inner end of the bottom of the top cover 2. The top cover 2 is mounted on the upper end of the flange plate 15; The filter element 4 is arranged inside the insulating partition barrel 3, and a fixed shaft 41 is fixed in the middle of the filter element 4, and the bottom of the fixed shaft 41 extends downward and is installed inside the positioning seat 16; The electrostatic adsorption mechanism is arranged above the interior of the insulating partition barrel 3 and installed above the filter element 4.

[0018] Further improved, the insulating separation barrel 3 has a symmetrical structure near the upper end with a threading port 31, the insulating separation barrel 3 is fixed with an insulating support plate 32 at the bottom, a through hole 321 is opened in the middle of the insulating support plate 32, and the upper end of the insulating support plate 32 is evenly distributed with fixing grooves 322; The insulating partition barrel 3 has the function of isolating the filter tank 1 from the filter element 4. The threading port 31 is used to facilitate threading or disassembly. The fixing groove 322 is used to fix and clamp multiple groups of cylindrical metal partitions 42. The through hole 321 is used to penetrate the locking fixed shaft 41. The insulating support plate 32 is used to insulate and support the filter element 4.

[0019] In a further improvement, the filter element 4 includes a metal separator 42 and a folded filter paper structure 43. The metal separator 42 is a plurality of cylindrical structures which are arranged in sequence, and the folded filter paper structures 43 are filled between the metal separators 42; The metal separator 42 is made of stainless steel, the folded filter paper structure 43 uses DMD insulating paper, and the thickness of the metal separator 42 is 0.8 mm; The folded filter paper structure 43 is serrated and the folds extend in the vertical direction. The gaps in the folded filter paper structure 43 are filled with a strong polar adsorption material, which is a strong polar macroporous spherical molecular sieve adsorbent; Using the special mechanism of action between molecules and the critical adsorption effect, selective purification, the adsorption capacity is much higher than other traditional adsorbents. The metal separator 42 made of 0.8mm stainless steel material is corrosion-resistant and durable. DMD insulation paper is a three-layer soft composite material made of polyester film coated with adhesive and polyester fiber non-woven fabric bonded on both sides, with good insulation effect.

[0020] Further improved, the electrostatic adsorption mechanism is a cross-shaped covering electrostatic adsorption mechanism 5, which includes a cross-shaped covering member 50, a collar 51 and a first electrostatic adsorption mechanism, the collar 51 is fixedly arranged on the outer upper end of the fixed shaft 41, the cross-shaped covering member 50 is fixedly arranged on the outer side wall of the collar 51, and the cross-shaped covering member 50 and the collar 51 are both pressed above the filter element 4, and the first electrostatic adsorption mechanism passes through the cross-shaped covering member 50 and is electrically connected to the inside of the filter element 4; The collar 51 is used to be sleeved onto the outside of the fixed shaft 41, the cross-shaped cover 50 is used to fix the upper cover of the filter element 4, and the first electrostatic adsorption mechanism is located above the cross-shaped cover 50 to perform electrostatic adsorption on the filter element 4.

[0021] Further improved, the first electrostatic adsorption mechanism is composed of a power supply line 52, a power supply ring 53, an extension plate 54, an electrode clamp 57 and an electrode clamp 58. The lower end of the power supply line 52 is connected to the upper part of the power supply ring 53, and the upper end of the power supply line 52 is connected to the threading port 31. The bottom of the power supply ring 53 is fixedly provided with a support rod 55, and the electrode clamp 57 is fixedly provided at the lower end of the support rod 55. The extension plate 54 is fixedly distributed on the outer side wall of the power ring 53, and a second support rod 56 is fixedly arranged at the bottom of the outer end of the extension plate 54, and a second electrode clamping plate 58 is fixedly arranged at the lower end of the second support rod 56; Electrode clamping plate 1 57 and electrode clamping plate 2 58 are both N-shaped structures clamped on the top of the metal separator 42; The power supply line 1 52 is used for power input, the power ring 53 is used to fix multiple groups of support rods 1 55 and electrode clamps 1 57 downward, the extension plate 54 is used to extend and fix support rods 2 56 and electrode clamps 2 58 outward, and the N-shaped electrode clamps 1 57 and 2 58 are used to contact the top of the metal separator 42 for electrostatic adsorption and oil filtering.

[0022] Further improvement, the electrostatic adsorption mechanism is a M-shaped covering electrostatic adsorption mechanism 6, which includes a M-shaped covering member 61, a support plate 62, a fixed disk 63, a fixed ring 64 and a second electrostatic adsorption mechanism, the fixed ring 64 is a circular ring structure of different diameters sequentially distributed inside the fixed disk 63, the support plate 62 is fixedly distributed on the outer side wall of the M-shaped covering member 61, and the support plate 62 is fixedly arranged on the upper ends of the fixed disk 63 and the fixed ring 64, a slide groove 621 is opened inside the support plate 62, and the second electrostatic adsorption mechanism is slidably connected to the slide groove 621 and extends downward through the gap of the fixed ring 64; The M-shaped cover 61, the support plate 62, the fixing plate 63 and the fixing ring 64 are used to stably cover the top of the pressed filter element 4. The fixing ring 64 with a circular ring structure of different diameters is used to smoothly pass the oil and penetrate the second electrostatic adsorption mechanism.

[0023] ​Further improved, the second electrostatic adsorption mechanism is composed of a power supply line 65, a power connection line 66, a support 67, an electrode sheet 672, a positioning plate 68 and a limiting slide plate 682. The positioning plate 68 is a symmetrical structure and a mounting plate 681 is fixedly provided at the inner end. The mounting plate 681 is located in the middle of the slide groove 621 and is docked and installed. The limiting slide plate 682 is fixedly provided with the outer end of the positioning plate 68 and is limitedly slid to the front and rear ends of the support plate 62. The support 67 is fixedly provided at the outer end of the limiting slide plate 682. A support rod 3 671 is fixedly provided at the bottom of the support 67. The electrode sheet 672 is fixedly provided at the bottom of the support rod 3 671. The electrode sheet 672 contacts the inner wall of the metal partition 42. The power connection line 66 is electrically connected to the upper end of the support 67. The lower end of the power supply line 65 is electrically connected to the adapter 651. The upper part of the power connection line 66 is plugged and installed to the front and rear ends of the adapter 651. Power supply line 2 65, adapter 651 and power connection line 66 are used to supply power to support 67. Support 67 and support rod 3 671 are used to pass through the gap of fixing ring 64 to fix electrode sheet 672 downward. Electrode sheet 672 directly contacts metal separator 42 for electrostatic adsorption and oil filtration. Positioning plate 68 is docked and installed through mounting plate 681. Positioning plate 68 and limiting slide plate 682 are located inside slide groove 621 and at the position where electrostatic adsorption is required for stable sliding adjustment of front and rear ends.

[0024] Specifically, the two ends of the mounting plate 681 are connected and connected with locking bolts 6811 and locking nuts 6812; A support plate 69 is fixedly provided below the side of the limiting slide plate 682 at one end, an adapter plate 691 is fixedly provided at the inner end of the support plate 69, a fixing cylinder 692 is fixedly provided through the middle of the adapter plate 691, an adjusting screw 693 is connected to the inside of the fixing cylinder 692 through a thread, a rotating plate 694 is fixedly provided at the upper end of the adjusting screw 693, and the bottom of the adjusting screw 693 is a rounded structure; The locking bolt 6811 and the locking nut 6812 are used for quick disassembly and assembly of the mounting plate 681, which is low in cost and simple to operate. The support plate 69 and the adapter plate 691 are used to fix the fixing cylinder 692 to the inner end. The fixing cylinder 692 is used to limit the adjustment screw 693 up and down. The rotating plate 694 is used to hand-operate the adjustment screw 693. The rounded structure facilitates stable support and locking to the inside of the slide slot 621 to prevent it from sliding easily.

[0025] Working principle: The electrostatic adsorption mechanism charges the particle impurities in the oil, the electric field generating component generates an electric field, the folded filter paper structure 43 is polarized in the electric field, and the charged particle impurities gather and adsorb on the surface of the folded filter paper structure 43; at the same time, the acidic molecules in the oil also gather near the folded filter paper structure 43 due to electrophoresis, achieving local enrichment of the acidic molecules, and the enriched acidic molecules are adsorbed by the adsorbent.

[0026] ​The folded filter paper structure 43 is polarized in the electric field, and a large local electric field gradient is generated at the folded depression of the folded filter paper structure 43, which is conducive to the adsorption of charged impurities on the surface; at the same time, under the action of the electric field, the acidic molecules in the oil will also move electrophoretically to the folded depression of the folded filter paper structure 43, achieving the enrichment of the acidic molecules, increasing the local concentration of the acidic molecules, and facilitating the effective absorption of the acidic molecules by the adsorbent; the electric field effect and the adsorbent work together to effectively reduce the acid value, moisture, particle size and other indicators of the oil.

[0027] The oil flows in from the lower oil inlet 11 of the filter tank 1 and then flows out from the upper oil outlet 12, ensuring that the oil is fully in contact with the overall filter element 4, improving the purification effect, and the sewage is discharged from the sewage outlet 13 and connected to the power harness of the electrostatic adsorption mechanism through the lead port 14; the folded filter paper structure 43 folds extend along the direction of oil flow, ensuring the smoothness of oil flow.

[0028] Performance comparison between the first electrostatic adsorption mechanism of the cross-shaped covering electrostatic adsorption mechanism 5 and the second electrostatic adsorption mechanism of the cross-shaped covering electrostatic adsorption mechanism 6:

[0029] Example 1: Take 200L of lubricating oil from the turbine system of a power plant and put it into an oil drum, connect it to a new electrostatic adsorption oil filtration system, use continuous circulation, and process it uninterruptedly for 72 hours before testing the key indicators of the oil sample. The results are as follows.

[0030]

[0031] From the table, we can see that this system can handle aged operating oil well and improve many key indicators.

[0032] The filter tank 1 of the present invention, the oil inlet 11, the oil outlet 12, the sewage outlet 13, the lead-in port 14, the flange plate 15, the positioning seat 16, the top cover 2, the extension ring 21, the protrusion structure 22, the insulating partition barrel 3, the threading port 31, the insulating support plate 32, the through hole 321, the fixing groove 322, the filter element 4, the fixing shaft 41, the metal separator 42, the folded filter paper structure 43, the cross-shaped covering electrostatic adsorption mechanism 5, the cross-shaped covering part 50, the collar 51, the power supply line 1 52, the power supply ring 53, the extension plate 54, the support rod 1 55, the support rod 2 56, the electrode clamp 1 57, the electrode clamp 2 58, The M-shaped cover electrostatic adsorption mechanism 6, the M-shaped cover 61, the support plate 62, the slide groove 621, the fixed plate 63, the fixed ring 64, the power supply line 2 65, the adapter 651, the power connection line 66, the support 67, the support rod 3 671, the electrode sheet 672, the positioning plate 68, the mounting plate 681, the locking bolt 6811, the locking nut 6812, the limit slide plate 682, the support plate 69, the adapter plate 691, the fixing cylinder 692, the adjusting screw 693, and the rotating plate 694 are all universal standard parts or parts known to those skilled in the art, and their structures and principles are all technically known in the art. Personnel can learn from the technical manual or through conventional experimental methods that the problem solved by the present invention is that vacuum separation is mostly used for dehydration and cannot handle soluble aging products; resin filter elements will produce additional moisture during use; traditional electrostatic filtration cannot effectively filter acidic products. Traditional oil filtration technology mainly relies on mechanical interception or single adsorption, and the filtration and purification effect is poor. The present invention combines the above components with each other. This system introduces an electric field polarization effect, so that particulate impurities, moisture and acidic molecules in the oil undergo directional migration under the action of the electric field, forming a secondary purification of "electric field pre-separation-medium adsorption enhancement". The electric field generating component makes the micron-sized particles 1-10μm in the oil obtain saturated charge, and is accelerated to migrate to the surface of the folded filter paper under the action of Coulomb force, which can increase the particle capture efficiency by 40%-60%, greatly improving the filtration accuracy compared with the traditional filter element; the highly polar macroporous spherical molecular sieve adsorbent produces a critical adsorption effect under the action of the electric field gradient, and its surface potential distribution forms a synergistic effect with the direction of the electric field. When the oil flows through the folded depression area, the local electric field intensity increases, so that the acid molecules are arranged in a directional manner and break through the mass transfer resistance of the traditional adsorbent. The measured acid value purification efficiency is increased by 35%-50%;The electrostatic adsorption mechanism of the system adopts a cross-shaped electrostatic adsorption mechanism 5 or a cross-shaped electrostatic adsorption mechanism 6, and adopts different electrostatic adsorption oil filtration modes to solve the technical bottlenecks of uneven electric field distribution and easy short circuit of electrodes in traditional electrostatic oil removal equipment. The cross-shaped electrostatic adsorption mechanism 5 generates a uniform electric field on the filter element 4, so that the particle charging efficiency reaches 92%-95%. The cross-shaped electrostatic adsorption mechanism 6 breaks through the traditional uniform electric field theoretical framework through the gradient electric field design, and realizes the synergistic conversion efficiency of "electric field energy-adsorption energy" increased by 22%-35%. The electrostatic adsorption mechanism charges the particulate impurities and water in the oil and separates them by adsorption, and cooperates with the strong polar adsorbent to adsorb the degraded acidic products in the oil, thereby improving the filtering and purification effect. ;

[0033] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0034] In addition, it should be understood that although this specification is described in terms of implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An electrostatic adsorption oil filter system, comprising a filter tank (1), a top cover (2), an insulating partition barrel (3), a filter element (4) and an electrostatic adsorption mechanism, characterized in that: The left lower end of the filter tank (1) is fixedly connected to an oil inlet (11), the left upper end of the filter tank (1) is fixedly connected to an oil outlet (12), the right lower end of the filter tank (1) is provided with a sewage outlet (13), the right upper end of the filter tank (1) is provided with a lead-in port (14), the upper and lower ends of the filter tank (1) are fixedly provided with flange plates (15), and a positioning seat (16) is provided in the middle of the inner bottom of the filter tank (1); The top of the top cover (2) is provided with a raised structure (22), the bottom inner end of the top cover (2) is fixedly provided with an extension ring (21) downwardly, and the top cover (2) is mounted on the upper end of the flange plate (15); The filter element (4) is arranged inside the insulating partition barrel (3), and a fixed shaft (41) is fixedly arranged in the middle of the filter element (4), and the bottom of the fixed shaft (41) extends downward and is installed inside the positioning seat (16); The electrostatic adsorption mechanism is arranged above the interior of the insulating separation barrel (3) and is installed above the filter element (4).

2. The electrostatic adsorption oil filtration system according to claim 1, characterized in that: The insulating partition barrel (3) is provided with a threading opening (31) in a symmetrical structure near the upper end, an insulating support plate (32) is fixedly provided at the bottom of the insulating partition barrel (3), a through hole (321) is provided in the middle of the insulating support plate (32), and fixing grooves (322) are evenly distributed at the upper end of the insulating support plate (32).

3. The electrostatic adsorption oil filtration system according to claim 1, characterized in that: The filter element (4) comprises a metal spacer (42) and a folded filter paper structure (43); the metal spacer (42) is in the form of a plurality of cylindrical structures which are sequentially arranged and distributed; and the folded filter paper structures (43) are respectively filled and arranged between the metal spacer (42); The metal separator (42) is made of stainless steel, the folded filter paper structure (43) is made of DMD insulating paper, and the thickness of the metal separator (42) is 0.8 mm; The folded filter paper structure (43) is serrated and the folds extend in a vertical direction. The gaps in the folded filter paper structure (43) are filled with a strong polar adsorption material, and the strong polar adsorption material is a strong polar macroporous spherical molecular sieve adsorbent.

4. The electrostatic adsorption oil filtration system according to claim 1, characterized in that: The electrostatic adsorption mechanism is a cross-shaped covering electrostatic adsorption mechanism (5), comprising a cross-shaped covering member (50), a collar (51) and a first electrostatic adsorption mechanism, wherein the collar (51) is fixedly arranged on the outer upper end of the fixed shaft (41), the cross-shaped covering member (50) is fixedly arranged on the outer side wall of the collar (51), and the cross-shaped covering member (50) and the collar (51) are both pressed above the filter element (4), and the first electrostatic adsorption mechanism passes through the cross-shaped covering member (50) and is electrically connected to the inside of the filter element (4).

5. The electrostatic adsorption oil filtering system according to claim 4, characterized in that: The first electrostatic adsorption mechanism is composed of a power supply line 1 (52), a power supply ring (53), an extension plate (54), an electrode clamp plate 1 (57) and an electrode clamp plate 2 (58); the lower end of the power supply line 1 (52) is connected to the upper part of the power supply ring (53), and the upper end of the power supply line 1 (52) is connected to the threading port (31); a support rod 1 (55) is fixedly provided at the bottom of the power supply ring (53), and the electrode clamp plate 1 (57) is fixedly provided at the lower end of the support rod 1 (55); The extension plate (54) is fixedly disposed on the outer side wall of the power supply ring (53), a second support rod (56) is fixedly disposed on the bottom of the outer end of the extension plate (54), and the second electrode clamping plate (58) is fixedly disposed on the lower end of the second support rod (56); The electrode clamp plate 1 (57) and the electrode clamp plate 2 (58) are both N-shaped structures that are clamped onto the top of the metal separator (42).

6. The electrostatic adsorption oil filtering system according to claim 1, characterized in that: The electrostatic adsorption mechanism is a cross-shaped electrostatic adsorption mechanism (6), the cross-shaped electrostatic adsorption mechanism (6) comprising a cross-shaped cover (61), a support plate (62), a fixed disk (63), a fixed ring (64) and a second electrostatic adsorption mechanism, the fixed ring (64) being circular ring structures of different diameters sequentially distributed inside the fixed disk (63), the support plate (62) being fixedly distributed on the outer side wall of the cross-shaped cover (61), and the support plate (62) being fixedly arranged on the upper ends of the fixed disk (63) and the fixed ring (64), the support plate (62) being provided with a slide groove (621) inside, and the second electrostatic adsorption mechanism being slidably connected to the slide groove (621) and extending downward through the gap of the fixed ring (64).

7. The electrostatic adsorption oil filtering system according to claim 6, characterized in that: The second electrostatic adsorption mechanism is composed of a second power supply line (65), a power connection line (66), a support (67), an electrode sheet (672), a positioning plate (68) and a limiting slide plate (682); the positioning plate (68) is symmetrically structured and a mounting plate (681) is fixedly provided at the inner end thereof; the mounting plate (681) is butt-mounted at the middle of the slide groove (621); the limiting slide plate (682) is fixedly provided with the outer end of the positioning plate (68) and is limitedly slidable to the front and rear ends of the support plate (62); the support (67) The outer end of the limiting slide plate (682) is fixedly provided with a support rod three (671) at the bottom of the support (67), the electrode sheet (672) is fixedly provided at the bottom of the support rod three (671), the electrode sheet (672) contacts the inner wall of the metal partition tube (42), the power connection line (66) is electrically connected to the upper end of the support (67), the lower end of the power supply line two (65) is electrically connected to the adapter (651), and the upper end of the power connection line (66) is plugged and installed to the front and rear ends of the adapter (651).

8. The electrostatic adsorption oil filtering system according to claim 7, characterized in that: Locking bolts (6811) and locking nuts (6812) are disposed through and connected to both ends of the mounting plate (681); A support plate (69) is fixedly provided below the side of the limiting slide plate (682) at one end, an adapter plate (691) is fixedly provided at the inner end of the support plate (69), a fixing cylinder (692) is fixedly provided through the middle of the adapter plate (691), an adjusting screw (693) is connected to the inside of the fixing cylinder (692) through a thread, a rotating plate (694) is fixedly provided at the upper end of the adjusting screw (693), and the bottom of the adjusting screw (693) is a rounded structure.

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