A multi-step gradient composite oil and gas separation filter

Abstract

The present invention relates to the technical field of filters, and specifically relates to a multi-gradient composite oil and gas separation filter, which includes an outer housing. On the left side of the outer surface of the outer housing, there are symmetrically fixed and through-connected liquid inlets. In the middle position on the left side of the inner surface of the outer housing, there is a fixed inner cylinder, and at the middle position of the connection between the inner cylinder and the liquid outlet, there is a liquid outlet, which is connected through the outer housing and the inner cylinder. And at the connection between the liquid outlet and the inner cylinder, there is a one-way valve fixedly installed. The outer surface of the inner cylinder is provided with evenly distributed round holes, and a replacement mechanism is sleeved on the outer surface of the inner cylinder. On the right side of the middle position of the outer surface of the inner cylinder, there is a sliding through connection with a valve body. At the middle position on the right side of the outer surface of the valve body, there is a third spring fixedly connected. Through the setting of the replacement mechanism, the filter paper can be replaced in time, which can prevent the filter paper from being blocked, keep the engine oil flowing back to the engine clean, and avoid causing secondary wear to the engine.

Description

Technical Field

[0001] The present invention relates to the technical field of filters, and in particular to a multi-gradient composite oil-gas separation filter. Background Art

[0002] The oil filter is located in the engine lubrication system. Upstream of it is the oil pump, and downstream are the various components in the engine that need lubrication. Its function is to filter out harmful impurities in the oil from the oil pan and supply clean oil to moving pairs such as the crankshaft, connecting rod, camshaft, supercharger, piston ring, etc., playing the roles of lubrication, cooling, and cleaning, thereby extending the service life of these components.

[0003] After the existing filter works for a period of time, a large amount of impurities will be deposited on the surface of the filter paper. These impurities blocking the surface of the filter paper will weaken the filtering performance of the filter paper. And considering that when the filter paper is partially blocked or completely blocked, the existing filter will set up a bypass valve to ensure that the oil can smoothly circulate back to the engine. However, when the oil opens the bypass valve under the pressure of the oil pump, at this time, the oil circulating back to the engine through the bypass valve not only cannot be filtered by the paper filter element, but also will re-flush the large particle impurities that have been filtered out by the paper filter element back into the engine through the bypass valve, bringing continuous secondary wear to the engine. Therefore, when the filter paper of the filter is blocked, it needs to be replaced in time to avoid the backflow of impurities into the engine interior and cause engine wear.

[0004] Therefore, a multi-gradient composite oil-gas separation filter is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-gradient composite oil-gas separation filter to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A multi-gradient composite oil-gas separation filter includes a housing body. On the left side of the outer surface of the housing body, there are symmetrically fixed and through-connected liquid inlets. In the middle position on the left side of the inner surface of the housing body, there is a fixed inner cylinder. And at the middle position of the connection between the inner cylinder and the outer cylinder, there is a liquid outlet. The liquid outlet is connected through the housing body and the inner cylinder, and a one-way valve is fixedly installed at the connection between the liquid outlet and the inner cylinder. The outer surface of the inner cylinder is provided with evenly distributed round holes, and a replacement mechanism is sleeved on the outer surface of the inner cylinder. On the right side of the outer surface of the inner cylinder, there is a sliding through-connection valve body. On the right side of the outer surface of the valve body, there is a third spring fixedly connected. The side of the third spring away from the liquid inlet is fixedly connected to the inner surface of the housing body.

[0007] During operation, considering that the filter paper may be partially or completely blocked in existing filters, a bypass valve is set to ensure that the engine oil can circulate back to the engine smoothly. However, when the engine oil opens the bypass valve under the pressure of the oil pump, the engine oil circulating back to the engine through the bypass valve not only cannot be filtered by the paper filter element, but also will wash the large particle impurities that have been filtered out by the paper filter element back into the engine through the bypass valve, causing continuous secondary wear to the engine. By setting a replacement mechanism in the present invention, the filter paper can be replaced in time to prevent impurities from flowing back into the engine interior and causing secondary wear to the engine.

[0008] Preferably, the replacement mechanism includes a first reel, a transmission belt, a partition board, a second reel, a motor, filter paper, a transmission wheel, an outer cover body, an upper cover and fixing bolts. An outer cover body is fixedly connected to the top of the outer surface of the outer shell body. The upper surface of the outer cover body is fixedly connected with an upper cover by setting fixing bolts. A partition board is fixedly installed at the middle position inside the outer cover body, and the lower surface of the partition board is fixedly connected with the outer shell body. A first reel and a second reel are respectively rotatably connected on both sides of the partition board inside the outer cover body. Installation ports are symmetrically opened on both sides of the partition board at the top of the outer surface of the outer shell body. The filter paper is sleeved on the outer surface of the inner cylinder body. One side of the filter paper passes through the installation port on the same side and is wound around the outer surface of the first reel. The other side of the filter paper passes through the installation port on the same side and is wound around the outer surface of the second reel. The front ends of the first reel and the second reel both penetrate through the outer cover body and are fixedly connected with a transmission wheel, and a transmission belt is rotatably sleeved on the outer surfaces of the two transmission wheels. A motor is fixedly connected to the middle position of the outer surface of the transmission wheel at the end of the first reel, and a vertical plate is fixedly connected to the outer surface of the motor. The vertical plate is fixedly connected to the outer surface of the outer shell body. A control mechanism capable of controlling the motor to drive is arranged on the outer surface of the outer shell body.

[0009] During operation, in order to avoid blockage of the filter paper and prevent impurities from flowing back into the engine and causing secondary wear to the engine, when the present invention is in use, first, the motor is connected to an external power supply and the motor is driven to rotate. The first reel fixedly connected to the motor through the transmission wheel rotates accordingly. Since the end of the second reel is also fixedly connected with a transmission wheel, and the two transmission wheels are connected by a transmission belt, the second reel rotates accordingly. The unused filter paper on the first reel covers the outer surface of the inner cylinder body through the installation port. The filter paper on the outer surface of the inner cylinder body is wound around the outer surface of the second reel through the installation port, that is, the filter paper on the surface of the inner cylinder body can be replaced. The engine oil enters the interior of the outer shell body through the liquid inlet, and then can pass through the filter paper. The filtered filter paper passes through the round holes on the surface of the inner cylinder body and then flows back to the engine interior through the liquid outlet. By setting a replacement mechanism in the present invention and replacing the filter paper in time, it is possible to prevent blockage of the filter paper, keep the engine oil flowing back to the engine clean, and avoid causing secondary wear to the engine.

[0010] Preferably, the top of the inner cylinder body is closed.

[0011] During operation, since the top of the inner cylinder body is not covered with a filter paper, the engine oil can directly enter the interior of the inner cylinder body through the round hole at the top of the inner cylinder body. However, since the engine oil is not filtered by the filter paper and contains impurities, it will cause wear to the engine. By setting the part of the top of the inner cylinder body that is not covered with the filter paper to be closed, it is possible to prevent the engine oil from directly entering the interior of the inner cylinder body through the round hole and causing secondary wear to the engine.

[0012] Preferably, the control mechanism includes a connecting pipe, a pressure valve, and a rubber contraction cylinder. The rubber contraction cylinder is fixedly installed at the top right side of the outer surface of the housing body, and a connecting pipe is fixedly and penetratingly connected between the rubber contraction cylinder and the housing body. A pressure valve is fixedly installed at the middle position of the outer surface of the connecting pipe. A touch switch is fixedly installed at the right side of the outer surface of the housing body at the edge of the rubber contraction cylinder. An elastic mechanism is arranged on the outer surface of the motor.

[0013] During operation, since the filter is in a sealed state, it is impossible to observe when the filter paper is clogged, and thus it is impossible to drive the motor to replace the filter paper in a timely manner. By setting the control mechanism, when the filter paper is clogged, the engine oil continuously pours into the interior of the housing body, causing the pressure inside the housing body to increase. The pressure valve opens, and the engine oil inside the housing body can then enter the rubber contraction cylinder through the connecting pipe, causing the volume of the rubber contraction cylinder to increase. When the rubber contraction cylinder touches the touch switch, it will drive the motor to rotate, thereby enabling the filter paper to be replaced. After the filter paper is replaced, the engine oil can pass through the filter paper and enter the inner cylinder body and be discharged from the liquid outlet.

[0014] Preferably, the elastic mechanism includes a cylinder, a first spring, and a connecting rod. A cylinder is fixedly connected to the bottom of the outer surface of the vertical plate. One end of the cylinder away from the vertical plate is slidably sleeved with a connecting rod. The outer surface of the cylinder is sleeved with a first spring. One end of the first spring is fixedly connected to the vertical plate, and the other end of the first spring is fixedly connected to the connecting rod. And the end of the connecting rod away from the cylinder is fixedly connected to the rubber contraction cylinder.

[0015] During operation, after the filter paper is replaced, the engine oil can pass through the filter paper and enter the inner cylinder body and be discharged from the liquid outlet. The pressure inside the housing body returns to normal. It is necessary to re-flow the engine oil in the rubber contraction cylinder back into the housing body. By setting the elastic mechanism, when the volume of the rubber contraction cylinder increases, it can drive the connecting rod to move. The movement of the connecting rod can stretch the first spring. After the filter paper is replaced and the engine oil can pass through the filter paper and enter the inner cylinder body and be discharged from the liquid outlet, and the pressure inside the housing body returns to normal, due to the elastic force of the rubber contraction cylinder itself and the elastic force of the first spring, the rubber contraction cylinder can be compressed, causing the engine oil in the rubber contraction cylinder to re-flow into the interior of the housing body.

[0016] Preferably, connecting plates are symmetrically fixedly connected to the inner surface of the outer shell on both sides, guide rods are symmetrically slidably penetrated and connected to the bottom of the connecting plates on both sides, and the ends of the two guide rods close to the filter paper are commonly connected to a fixing seat, and a clamping roller is rotatably installed on the side of the fixing seat close to the filter paper, and the clamping roller presses against the filter paper and rotates therewith, the ends of the two guide rods away from the fixed seat both penetrate the outer shell and are fixedly connected to a limiting circular plate, and the outer surfaces of the two guide rods are both covered with a second spring, one end of the second spring is fixedly connected to the outer shell, and the other end of the second spring is fixedly connected to the limiting circular plate.

[0017] During operation, since there is no fixing mechanism between the filter paper and the inner cylinder, there may be a gap between the filter paper and the inner cylinder, and the filter paper cannot fit well on the surface of the inner cylinder. By setting a clamping roller and a fixed seat, the limiting circular plate is first pulled, and the second spring fixedly connected to the limiting circular plate is stretched. When the filter paper covers the surface of the inner cylinder, the limiting circular plate is released, and the second spring contracts, thereby driving the limiting circular plate to move to the side close to the connecting plate. Similarly, the clamping roller connected to the limiting circular plate through the guide rod and the fixed seat moves, and the clamping roller can press against the filter paper, so that the filter paper can fit closely to the surface of the inner cylinder.

[0018] During operation, there are 40% harmful impurities in the engine oil that cannot be effectively filtered out by the filter paper. Among these 40% impurities, ferromagnetic impurities are relatively small and hard, so they cause the greatest damage to the engine. By setting up magnetic strips, the magnetic strips can absorb ferromagnetic impurities in the engine oil and prevent adverse effects on the engine.

[0019] Preferably, a scraper plate is slidably mounted on the outer surface of the magnetic strip, a hydraulic rod is fixedly connected to the right side of the outer surface of the collecting box, and the hydraulic rod penetrates the collecting box and is fixedly connected to the scraper plate.

[0020] During operation, when there are a lot of impurities adsorbed on the magnetic strip, it is necessary to clean it in time. By setting a hydraulic rod, when the impurities on the magnetic strip need to be cleaned, the hydraulic rod is driven to extend, which can drive the scraper plate mounted on the magnetic strip to move, so that the scraper plate can scrape the impurities on the magnetic strip into the collection box, and then discharge them from the discharge port.

[0021] Preferably, the outer surface of the liquid inlet is fixedly covered with a heating jacket.

[0022] During operation, when the engine is cold started, the viscosity of the engine oil is relatively high and it cannot pass through the filter paper well. The engine oil cannot be filtered smoothly and flow back to the engine. By setting a heating sleeve, the engine oil entering the outer shell through the liquid inlet can be heated to improve the fluidity of the engine oil and pass through the filter paper well.

[0023] Preferably, a heat-insulating layer is fixedly embedded in the middle of the inner wall of the outer shell.

[0024] During operation, there is heat loss when entering the casing. By setting a heat-insulating layer, the engine oil can be kept warm to ensure its fluidity.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. For existing filters, when considering that the filter paper is partially or completely blocked, a bypass valve is set to ensure the smooth circulation of engine oil back to the engine. However, when the engine oil opens the bypass valve under the pressure of the oil pump, the engine oil circulating back to the engine through the bypass valve not only cannot be filtered by the paper filter element, but also the large particle impurities that have been filtered out by the paper filter element will be washed back into the engine through the bypass valve, causing continuous secondary wear to the engine. By setting a replacement mechanism, the present invention can timely replace the filter paper to prevent impurities from flowing back into the engine interior and causing secondary wear to the engine.

[0027] 2. Since the top of the inner cylinder is not covered with filter paper, engine oil can directly enter the interior of the inner cylinder through the round hole at the top of the inner cylinder. Without being filtered by the filter paper, the engine oil contains impurities and will cause wear to the engine. By setting the part of the top of the inner cylinder not covered with filter paper in an unclosed state, it can be avoided that engine oil directly enters the interior of the inner cylinder through the round hole and causes secondary wear to the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural view of the whole of the present invention;

[0029] Figure 2 is a cross-sectional view of the present invention;

[0030] Figure 3 is a structural view of the replacement mechanism of the present invention;

[0031] Figure 4 is a structural view of the control mechanism of the present invention;

[0032] Figure 5 is a structural view of the elastic mechanism of the present invention;

[0033] Figure 6 is a structural view of the pressing roller, fixed seat, guide rod, limiting circular plate and second spring of the present invention.

[0034] In the figure: 1. Outer housing; 2. Liquid inlet; 3. Replacement mechanism; 31. First reel; 32. Transmission belt; 33. Partition board; 34. Second reel; 35. Motor; 36. Filter paper; 37. Transmission wheel; 38. Outer cover body; 39. Upper cover; 310. Fixing bolt; 4. Liquid outlet; 5. Inner cylinder; 6. Round hole; 7. Valve body; 8. Control mechanism; 81. Connecting pipe; 82. Pressure valve; 83. Rubber shrinkage cylinder; 84. Touch switch; 9. Elastic mechanism; 91. Cylinder; 92. First spring; 93. Connecting rod; 10. Vertical board; 11. Connecting plate; 12. Tightening roller; 13. Fixed seat; 14. Guide rod; 15. Second spring; 16. Limiting circular plate; 17. Discharge port; 18. Magnetic strip; 19. Collection box; 20. Scraping plate; 21. Hydraulic rod; 22. Heating sleeve; 23. Heat insulation layer; 24. Check valve; 25. Third spring. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined. In addition, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Please refer to Figures 1 to 6 , the present invention provides a technical solution:

[0039] A multi-step gradient composite oil and gas separation filter, as Figures 1 to 3 shown, includes a housing 1. On the left side of the outer surface of the housing 1, liquid inlets 2 are symmetrically and fixedly connected through. In the middle position on the left side of the inner surface of the housing 1, an inner cylinder 5 is fixedly connected. And at the middle position of the connection between the inner cylinder 5 and the outer cylinder 1, a liquid outlet 4 is provided. The liquid outlet 4 penetrates through the housing 1 and is connected to the inner cylinder 5. And at the connection between the liquid outlet 4 and the inner cylinder 5, a one-way valve 24 is fixedly installed. The outer surface of the inner cylinder 5 is provided with evenly distributed round holes 6. And a replacement mechanism 3 is sleeved on the outer surface of the inner cylinder 5. On the right side of the outer surface of the inner cylinder 5, a valve body 7 is slidably and penetratingly connected. On the right side of the outer surface of the valve body 7, a third spring 25 is fixedly connected. The side of the third spring 25 away from the liquid inlet 2 is fixedly connected to the inner surface of the housing 1.

[0040] During operation, for existing filters, considering that when the filter paper 36 is partially or completely blocked, a bypass valve is set to ensure that the engine oil can circulate back to the engine smoothly. However, when the engine oil opens the bypass valve under the pressure of the oil pump, at this time, the engine oil circulating back to the engine through the bypass valve not only cannot be filtered by the paper filter element, but also the large particle impurities that have been filtered out by the paper filter element will be washed back into the engine through the bypass valve again, causing continuous secondary wear to the engine. By providing the replacement mechanism 3, the present invention can timely replace the filter paper 36 to prevent impurities from flowing back into the engine and causing secondary wear to the engine.

[0041] As an embodiment of the present invention, as Figure 3As shown, the replacement mechanism 3 includes a first reel 31, a transmission belt 32, a partition 33, a second reel 34, a motor 35, a filter paper 36, a transmission wheel 37, an outer cover 38, an upper cover 39, and fixing bolts 310. The top of the outer surface of the outer housing 1 is fixedly connected to the outer cover 38. The upper surface of the outer cover 38 is fixedly connected to the upper cover 39 by setting fixing bolts 310. The middle position inside the outer cover 38 is fixedly installed with a partition 33, and the lower surface of the partition 33 is fixedly connected to the outer housing 1. Inside the outer cover 38, a first reel 31 and a second reel 34 are respectively rotatably connected on both sides of the partition 33. Installation openings are symmetrically provided on both sides of the partition 33 at the top of the outer surface of the outer housing 1. The outer surface of the inner cylinder 5 is sleeved with a filter paper 36. One side of the filter paper 36 passes through the installation opening on the same side and is wound around the outer surface of the first reel 31. The other side of the filter paper 36 passes through the installation opening on the same side and is wound around the outer surface of the second reel 34. The front ends of the first reel 31 and the second reel 34 both penetrate through the outer cover 38 and are fixedly connected to a transmission wheel 37, and a transmission belt 32 is rotatably sleeved on the outer surfaces of the two transmission wheels 37. The middle position on the outer surface of the transmission wheel 37 at the end of the first reel 31 is fixedly connected to a motor 35, and a vertical plate 10 is fixedly connected to the outer surface of the motor 35. The vertical plate 10 is fixedly connected to the outer surface of the outer housing 1. A control mechanism 8 capable of controlling the motor 35 to drive is provided on the outer surface of the outer housing 1.

[0042] During operation, in order to avoid clogging of the filter paper 36 and prevent impurities from flowing back into the engine, causing secondary wear to the engine, when the present invention is in use, first, the motor 35 is connected to an external power source and the motor 35 is driven to rotate. The first reel 31 fixedly connected to the motor 35 through the transmission wheel 37 thus rotates. Since the transmission wheel 37 is also fixedly connected to the end of the second reel 34, and the two transmission wheels 37 are connected by the transmission belt 32, therefore, the second reel 34 rotates accordingly. The unused filter paper 36 on the first reel 31 covers the outer surface of the inner cylinder 5 through the installation opening. The filter paper 36 on the outer surface of the inner cylinder 5 is wound around the outer surface of the second reel 34 through the installation opening, that is, the filter paper 36 on the surface of the inner cylinder 5 can be replaced. The engine oil enters the inside of the outer housing 1 through the liquid inlet 2, and then can pass through the filter paper 36. The filtered filter paper 36 passes through the round holes 6 on the surface of the inner cylinder 5 and then flows back into the engine through the liquid outlet 4. By setting the replacement mechanism 3, the filter paper 36 can be replaced in time, preventing the filter paper 36 from clogging, keeping the engine oil flowing back into the engine clean, and avoiding secondary wear to the engine.

[0043] As an embodiment of the present invention, as Figure 3 shown, the top of the inner cylinder 5 is closed.

[0044] During operation, since the top of the inner cylinder 5 is not covered with the filter paper 36, the engine oil can directly enter the interior of the inner cylinder 5 through the round hole 6 at the top of the inner cylinder 5. Without being filtered by the filter paper 36, the engine oil contains impurities, which will cause wear to the engine. By setting the part of the top of the inner cylinder 5 that is not covered with the filter paper 36 to be closed, it can be avoided that the engine oil directly enters the interior of the inner cylinder 5 through the round hole 6, causing secondary wear to the engine.

[0045] As an implementation manner of the present invention, as Figure 4 shown, the control mechanism 8 includes a connecting pipe 81, a pressure valve 82, and a rubber shrinkage cylinder 83. The rubber shrinkage cylinder 83 is fixedly installed at the top right side of the outer surface of the outer casing 1, and a connecting pipe 81 is fixedly and penetratingly connected between the rubber shrinkage cylinder 83 and the outer casing 1. A pressure valve 82 is fixedly installed at the middle position of the outer surface of the connecting pipe 81. A touch switch 84 is fixedly installed at the edge of the rubber shrinkage cylinder 83 on the right side of the outer surface of the outer casing 1. An elastic mechanism 9 is arranged on the outer surface of the motor 35.

[0046] During operation, since the filter is in a sealed state, it is impossible to observe when the filter paper 36 is blocked, so it is impossible to drive the motor 35 to replace the filter paper 36 in time. By setting the control mechanism 8, when the filter paper 36 is blocked, the engine oil continuously pours into the interior of the outer casing 1, causing the pressure inside the outer casing 1 to increase. The pressure valve 82 opens, and the engine oil in the outer casing 1 can thus enter the rubber shrinkage cylinder 83 through the connecting pipe 81, causing the volume of the rubber shrinkage cylinder 83 to increase. When the rubber shrinkage cylinder 83 touches the touch switch 84, it will drive the motor 35 to rotate, so that the filter paper 36 can be replaced. After the filter paper 36 is replaced, the engine oil can pass through the filter paper 36 and enter the inner cylinder 5 and be discharged from the liquid outlet 4.

[0047] As an implementation manner of the present invention, as Figure 5 shown, the elastic mechanism 9 includes a cylinder 91, a first spring 92, and a connecting rod 93. The bottom of the outer surface of the vertical plate 10 is fixedly connected with the cylinder 91. The connecting rod 93 is slidably sleeved at one end of the cylinder 91 away from the vertical plate 10. The outer surface of the cylinder 91 is sleeved with the first spring 92. One end of the first spring 92 is fixedly connected with the vertical plate 10, and the other end of the first spring 92 is fixedly connected with the connecting rod 93. And the end of the connecting rod 93 away from the cylinder 91 is fixedly connected with the rubber shrinkage cylinder 83.

[0048] During operation, after replacing the filter paper 36, the engine oil can enter the inner cylinder 5 through the filter paper 36 and be discharged from the liquid outlet 4. When the pressure inside the outer housing 1 returns to normal, it is necessary to make the engine oil in the rubber contraction cylinder 83 flow back into the outer housing 1 again. By setting the elastic mechanism 9, when the volume of the rubber contraction cylinder 83 increases, it can drive the connecting rod 93 to move, and the movement of the connecting rod 93 can stretch the first spring 92. After replacing the filter paper 36, when the engine oil can enter the inner cylinder 5 through the filter paper 36 and be discharged from the liquid outlet 4, and the pressure inside the outer housing 1 returns to normal, due to the elastic force of the rubber contraction cylinder 83 itself and the elastic action of the first spring 92, the rubber contraction cylinder 83 can be compressed, so that the engine oil in the rubber contraction cylinder 83 flows back into the interior of the outer housing 1 again.

[0049] As an embodiment of the present invention, as Figure 6 shown, two symmetrically fixed connection plates 11 are fixedly connected to both sides of the inner surface of the outer housing 1. Two guide rods 14 are symmetrically and slidably penetrated and connected to both sides of the bottom of the connection plate 11. One ends of the two guide rods 14 close to the filter paper 36 are jointly connected to a fixed seat 13. A pressing roller 12 is rotatably installed on one side of the fixed seat 13 close to the filter paper 36, and the pressing roller 12 abuts against the filter paper 36 and rotates in cooperation with it. One ends of the two guide rods 14 far from the fixed seat 13 penetrate through the outer housing 1 and are fixedly connected with limit circular plates 16. Second springs 15 are sleeved on the outer surfaces of the two guide rods 14. One end of the second spring 15 is fixedly connected to the outer housing 1, and the other end of the second spring 15 is fixedly connected to the limit circular plate 16.

[0050] During operation, since there is no fixing mechanism between the filter paper 36 and the inner cylinder 5, there may be a gap between the filter paper 36 and the inner cylinder 5, and it cannot fit well on the surface of the inner cylinder 5. By setting the pressing roller 12 and the fixed seat 13, first pull the limit circular plate 16, and the second spring 15 fixedly connected to the limit circular plate 16 is stretched accordingly. When the filter paper 36 covers the surface of the inner cylinder 5, release the limit circular plate 16, and the second spring 15 contracts, thereby driving the limit circular plate 16 to move towards the side close to the connection plate 11. Similarly, the pressing roller 12 connected to the limit circular plate 16 through the guide rod 14 and the fixed seat 13 moves, and the pressing roller 12 can press against the filter paper 36, so that the filter paper 36 can be tightly attached to the surface of the inner cylinder 5.

[0051] As an embodiment of the present invention, as Figure 2 shown, a collection box 19 is fixedly and through-connected to the bottom of the outer housing 1. A magnetic strip 18 is fixedly connected to the inner top of the collection box 19. A discharge port 17 is fixedly and through-connected to the left side of the outer surface of the collection box 19.

[0052] During operation, there are 40% of harmful impurities in the engine oil impurities, which cannot be effectively filtered out by the filter paper 36. Among these 40% of impurities, ferromagnetic impurities are relatively small and hard, and thus they cause the greatest damage to the engine. By setting the magnetic strip 18, the magnetic strip 18 can absorb the ferromagnetic impurities in the engine oil to prevent adverse effects on the engine.

[0053] As an embodiment of the present invention, Figure 2 As shown, a scraper plate 20 is slidably mounted on the outer surface of the magnetic strip 18 , and a hydraulic rod 21 is fixedly connected to the right side of the outer surface of the collecting box 19 , and the hydraulic rod 21 penetrates the collecting box 19 and is fixedly connected to the scraper plate 20 .

[0054] During operation, when there are a lot of impurities adsorbed on the magnetic strip 18, it is necessary to clean it in time. By setting a hydraulic rod 21, when the impurities on the magnetic strip 18 need to be cleaned, the hydraulic rod 21 is driven to extend, which can drive the scraper plate 20 mounted on the magnetic strip 18 to move, and the scraper plate 20 can scrape the impurities on the magnetic strip 18 into the collection box 19, and then discharge them from the discharge port 17.

[0055] As an embodiment of the present invention, Figure 2 As shown, the outer surface of the liquid inlet 2 is fixedly covered with a heating jacket 22 .

[0056] During operation, when the engine is cold started, the viscosity of the engine oil is relatively high and it cannot pass through the filter paper 36 well. The engine oil cannot be filtered smoothly and flow back to the engine. By setting the heating sleeve 22, the engine oil entering the outer shell 1 through the liquid inlet 2 can be heated, thereby improving the fluidity of the engine oil and allowing it to pass through the filter paper 36 well.

[0057] As an embodiment of the present invention, Figure 2 As shown, a heat-insulating layer 23 is fixedly embedded in the middle of the inner wall of the outer shell 1 .

[0058] During operation, there is a chance of heat loss when the oil enters the outer shell 1. By providing the heat-insulating layer 23, the oil can be kept warm to ensure the fluidity of the oil.

[0059] Usage method: To avoid clogging of the filter paper 36 and prevent impurities from flowing back into the engine, causing secondary wear to the engine, when the present invention is in use, first, connect the motor 35 to an external power source and drive the motor 35 to rotate. The first reel 31 fixedly connected to the motor 35 by the transmission wheel 37 thus rotates. Since the transmission wheel 37 is also fixedly connected to the end of the second reel 34, and the two transmission wheels 37 are connected by the transmission belt 32, therefore, the second reel 34 rotates accordingly. The unused filter paper 36 on the first reel 31 covers the outer surface of the inner cylinder 5 through the installation opening, and the filter paper 36 on the outer surface of the inner cylinder 5 is wound onto the outer surface of the second reel 34 through the installation opening, that is, the filter paper 36 on the surface of the inner cylinder 5 can be replaced. The engine oil enters the interior of the outer housing 1 through the liquid inlet 2, and then can pass through the filter paper 36. The filtered filter paper 36 passes through the round holes 6 on the surface of the inner cylinder 5 and then flows back into the engine interior through the liquid outlet 4. By providing the replacement mechanism 3, the present invention can timely replace the filter paper 36, prevent the filter paper 36 from clogging, keep the engine oil flowing back into the engine clean, and avoid causing secondary wear to the engine.

[0060] All the electrical components appearing in this article are electrically connected to the external main controller and 220V mains through a transformer, and the main controller can be a conventional known device such as a computer for control. The product models provided by the present invention are only used according to the structural characteristics of the technical solution. The products will be adjusted and modified after purchase to make them more matching and conform to the technical solution to which the present invention belongs. It is an optimal application technical solution of the present technical solution. The product models can be replaced and modified according to the required technical parameters, which are well known to those skilled in the art. Therefore, those skilled in the art can clearly obtain the corresponding use effects through the technical solution provided by the present invention.

[0061] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-step gradient composite oil and gas separation filter, comprising a housing (1), characterized in that: On the left side of the outer surface of the outer shell body (1), a liquid inlet (2) is symmetrically and fixedly connected through. In the middle position on the left side of the inner surface of the outer shell body (1), an inner cylinder body (5) is fixedly connected. And at the middle position of the connection between the inner cylinder body (5) and the outer cylinder body (1), a liquid outlet (4) is provided. The liquid outlet (4) is connected through the outer shell body (1) and the inner cylinder body (5). And at the connection between the liquid outlet (4) and the inner cylinder body (5), a one-way valve (24) is fixedly installed. The outer surface of the inner cylinder body (5) is provided with uniformly distributed round holes (6). And a replacement mechanism (3) is sleeved on the outer surface of the inner cylinder body (5). At the middle position on the right side of the outer surface of the inner cylinder body (5), a valve body (7) is slidably connected through. At the middle position on the right side of the outer surface of the valve body (7), a third spring (25) is fixedly connected. The side of the third spring (25) away from the liquid inlet (2) is fixedly connected to the inner surface of the outer shell body (1); The replacement mechanism (3) includes a first reel (31), a transmission belt (32), a partition plate (33), a second reel (34), a motor (35), a filter paper (36), a transmission wheel (37), an outer cover body (38), an upper cover (39) and a fixing bolt (310). On the top of the outer surface of the outer shell body (1), an outer cover body (38) is fixedly connected. The upper surface of the outer cover body (38) is fixedly connected with an upper cover (39) by setting a fixing bolt (310). In the middle position inside the outer cover body (38), a partition plate (33) is fixedly installed. And the lower surface of the partition plate (33) is fixedly connected to the outer shell body (1). Inside the outer cover body (38), a first reel (31) and a second reel (34) are respectively rotatably connected on both sides of the partition plate (33). On the top of the outer surface of the outer shell body (1), installation openings are symmetrically provided on both sides of the partition plate (33). A filter paper (36) is sleeved on the outer surface of the inner cylinder body (5). One side of the filter paper (36) passes through the installation opening on the same side and is wound around the outer surface of the first reel (31). The other side of the filter paper (36) passes through the installation opening on the same side and is wound around the outer surface of the second reel (34). The front ends of the first reel (31) and the second reel (34) both penetrate through the outer cover body (38) and are fixedly connected with a transmission wheel (37). And a transmission belt (32) is rotatably sleeved on the outer surfaces of the two transmission wheels (37). At the middle position on the outer surface of the transmission wheel (37) at the end of the first reel (31), a motor (35) is fixedly connected. And a vertical plate (10) is fixedly connected to the outer surface of the motor (35). The vertical plate (10) is fixedly connected to the outer surface of the outer shell body (1). A control mechanism (8) capable of controlling the motor (35) to drive is arranged on the outer surface of the outer shell body (1); The top of the inner cylinder body (5) is closed; The control mechanism (8) includes a connecting pipe (81), a pressure valve (82), and a rubber shrinkage cylinder (83). The rubber shrinkage cylinder (83) is fixedly installed at the top right of the outer surface of the outer housing (1), and a connecting pipe (81) is fixedly and penetratingly connected between the rubber shrinkage cylinder (83) and the outer housing (1). A pressure valve (82) is fixedly installed at the middle position of the outer surface of the connecting pipe (81). A touch switch (84) is fixedly installed at the edge of the rubber shrinkage cylinder (83) on the right side of the outer surface of the outer housing (1). An elastic mechanism (9) is arranged on the outer surface of the motor (35); when the filter paper (36) is blocked, oil is continuously poured into the inner part of the outer housing (1), causing the pressure inside the outer housing (1) to increase. The pressure valve (82) opens, and the oil in the outer housing (1) can thus enter the rubber shrinkage cylinder (83) through the connecting pipe (81), making the volume of the rubber shrinkage cylinder (83) increase. When the rubber shrinkage cylinder (83) touches the touch switch (84), the motor (35) will be driven to rotate, so as to replace the filter paper (36); The elastic mechanism (9) includes a cylinder (91), a first spring (92), and a connecting rod (93). A cylinder (91) is fixedly connected to the bottom of the outer surface of the vertical plate (10). One end of the cylinder (91) away from the vertical plate (10) is slidably sleeved with a connecting rod (93). A first spring (92) is sleeved on the outer surface of the cylinder (91). One end of the first spring (92) is fixedly connected to the vertical plate (10), and the other end of the first spring (92) is fixedly connected to the connecting rod (93). And the end of the connecting rod (93) away from the cylinder (91) is fixedly connected to the rubber shrinkage cylinder (83); Two connecting plates (11) are symmetrically and fixedly connected to both sides of the inner surface of the outer housing (1). Guide rods (14) are symmetrically and slidably penetrated through both sides of the bottom of the connecting plates (11). One ends of the two guide rods (14) close to the filter paper (36) are jointly connected to a fixing seat (13). A pressing roller (12) is rotatably installed on one side of the fixing seat (13) close to the filter paper (36), and the pressing roller (12) abuts against the filter paper (36) and rotates in cooperation with it. The filter paper (36) is closely attached to the inner cylinder (5). One ends of the two guide rods (14) away from the fixing seat (13) both penetrate through the outer housing (1) and are fixedly connected to limiting circular plates (16). And second springs (15) are sleeved on the outer surfaces of the two guide rods (14). One end of the second spring (15) is fixedly connected to the connecting plate (11), and the other end of the second spring (15) is fixedly connected to the limiting circular plate (16); A collection box (19) is fixedly and penetratingly connected to the bottom of the outer housing (1). A magnetic strip (18) is fixedly connected to the inner top of the collection box (19). A discharge port (17) is fixedly and penetratingly connected to the left side of the outer surface of the collection box (19); A scraping plate (20) is slidably sleeved on the outer surface of the magnetic stripe (18), a hydraulic rod (21) is fixedly connected to the right side of the outer surface of the collection box (19), and the hydraulic rod (21) penetrates through the collection box (19) and is fixedly connected to the scraping plate (20); Heating sleeves (22) are fixedly sleeved on the outer surfaces of the liquid inlets (2); A heat preservation interlayer (23) is fixedly embedded at the middle position of the inner wall of the outer shell (1).

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