A multi-stage supercharged crude oil filter based on marine equipment

Abstract

The application discloses the field of crude oil filter, and relates to a multi-stage pressurization type crude oil filter based on a ship device, which comprises an oil tank, and a first filter tank is fixedly connected to the bottom end in the oil tank. The first threaded rod is rotated, the first pressurization plate moves upwards, the first filter tank is sealed under the action of the first instantaneous sealing mechanism, the pressure in the first filter tank is reduced, and the crude oil in the oil tank is rapidly sucked into the oil tank under the action of the pressure. When the first pressurization plate moves to the highest point, the leakage groove is opened, the first threaded rod is reversely rotated, the first pressurization plate moves downwards, and when the first pressurization plate moves to the lowest end, the leakage groove is resealed by the sliding plate. Then, the first pressurization plate moves upwards to deliver the crude oil to the top end, the crude oil is discharged through the oil discharge pipe, the pressure in the first filter tank is continuously increased, the crude oil in the oil tank is accelerated to be sucked into the first filter tank, and therefore, the oil supply speed is improved.

Description

Technical Field

[0001] This invention discloses a multi-stage pressurized coarse oil filter based on marine equipment in the field of coarse oil filters. Background Technology

[0002] The coarse oil filter is installed in the fuel chamber of a ship. The oil flows into the main body and is filtered by two filter cartridges inside the main body to remove impurities from the oil. The filtered oil then flows out from the outlet for use.

[0003] As an important piece of machinery on ships, the coarse oil filter suffers from several problems under current technology. Due to the viscous nature of the crude oil, its speed at which it passes through the filter screen decreases over time, reducing the filtration rate and making it unable to keep up with the oil supply rate. This hinders the normal operation of the ship for five years.

[0004] Based on this, the present invention designs a multi-stage pressurized coarse oil filter based on marine equipment to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-stage pressurized coarse oil filter based on marine equipment, in order to solve the problem mentioned in the background art that, when the coarse oil filter is used for a long time, the speed at which the coarse oil passes through the filter screen in the coarse oil filter will decrease due to the viscous nature of the coarse oil, thereby reducing the filtration speed and making it unable to keep up with the oil supply speed, thus affecting the normal operation of the ship for five years.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-stage pressurized coarse oil filter based on marine equipment, comprising an oil tank, a first filter box fixedly connected to the bottom of the oil tank, a second filter box fitted over the first filter box and fixedly connected to the bottom of the oil tank, a third filter box fitted over the second filter box and fixedly connected to the bottom of the oil tank, a first sealing plate sealed at the top of the first filter box, a second sealing plate fixedly connected to the top of the outer side wall of the first filter box and the top of the inner side wall of the second filter box, a third sealing plate fixedly connected to the top of the outer side wall of the second filter box and the top of the inner side wall of the third filter box, an oil drain pipe connected to the top of the first sealing plate, the top of the oil drain pipe penetrating through the top of the oil tank and fixedly connected to the top of the oil tank, an oil injection pipe connected to the bottom of the oil tank, and a pressurization mechanism provided inside the first filter box;

[0007] The pressurizing mechanism includes a first threaded rod, the bottom end of which is rotatably connected to the bottom of the first filter box. The top end of the first threaded rod passes through the top of the first sealing plate and the top of the oil tank in sequence and is rotatably connected to the first sealing plate and the oil tank respectively. A driving mechanism is provided at the top end of the first threaded rod. A first pressurizing plate is threadedly connected to the surface of the first threaded rod. The first pressurizing plate is located at the bottom of the first filter box. The first pressurizing plate is longitudinally slidably connected to the inner wall of the oil filter barrel. The surface of the first pressurizing plate is symmetrically provided with grooves. A sliding plate is slidably connected in each groove. The sliding plate seals the groove. A first pushing block is symmetrically fixedly connected to the top and bottom of the sliding plate. A second pushing block that cooperates with the first pushing block is fixedly connected to the top and bottom of the oil barrel respectively. A first instantaneous sealing mechanism is provided inside the first filter box.

[0008] In existing technology, during prolonged use of the coarse oil filter, the viscous nature of the coarse oil causes its speed to decrease as it passes through the filter screen, reducing the filtration speed and hindering the oil supply rate. This can impede the normal operation of the vessel for five years. The specific operation is as follows: First, coarse oil is injected into the oil tank through the injection pipe. Then, the drive mechanism is activated, causing the first threaded rod to rotate repeatedly. As the first threaded rod rotates, the first pressure plate moves upward. In the initial instant, the sealing mechanism seals the first filter box. With the action of the first pressure plate, the filter box moves upward, gradually opening its filter holes. As the first pressure plate moves upward, the pressure inside the first filter box decreases, and the coarse oil in the tank rapidly releases its contents under the increased pressure. The crude oil is rapidly drawn into the oil tank. When the first booster plate reaches its highest point, the first and second push blocks contact and press against each other, causing the first push block to move the slide plate and open the trough. Then, the first threaded rod is driven in the opposite direction by the drive mechanism. Under the action of the threaded connection, the first booster plate moves downward. Since the trough is open at this time, the pressure inside the filter tank remains unchanged until the first booster plate reaches its lowest point. At this time, the first and second push blocks contact and press against each other, and the trough is resealed by the slide plate. Then, the first booster plate moves upward, delivering the crude oil to the top and being discharged by the drain pipe. The above movement is repeated, and the principle is the same as described above, so that the first filter box is continuously pressurized, and the crude oil in the oil tank is accelerated to be drawn into the first filter box, thereby increasing the oil supply speed.

[0009] As a further embodiment of the present invention, a second pressure plate is slidably connected to the inner wall of the second filter box and the outer wall of the first filter box. The second pressure plate is at the top of the second filter box, and a second threaded rod is threadedly connected to the top of the second pressure plate. The top of the second threaded rod is rotatably connected to the bottom of the second filter box. After the top of the second threaded rod passes through the top of the oil tank, it is rotatably connected to the oil tank. A second instantaneous sealing mechanism is provided inside the second filter box. A third pressure plate is slidably connected to the inner wall of the third filter box and the inner wall of the second filter box. The third pressure plate is at the bottom of the third filter box, and a third threaded rod is threadedly connected to the top of the third pressure plate. The top of the third threaded rod is rotatably connected to the bottom of the second filter box. After the top of the third threaded rod passes through the top of the oil tank, it is rotatably connected to the oil tank. A third instantaneous sealing mechanism is provided inside the third filter box. During operation, to prevent large molecules in the crude oil from clogging the first filter box, thus reducing the filtration speed and oil supply rate, a second and third filter box are installed. When the drive mechanism is activated, the second and third threaded rods rotate, the second pressure plate moves downward, and the third pressure plate moves upward. Under the action of the second and third instantaneous sealing mechanisms, the third pressure plate accelerates the intake of crude oil from the tank into the first filter box, while the second pressure plate accelerates the discharge of crude oil from the second filter box into the first filter box. This increases the filtration speed of the first filter box. At the same time, after undergoing multiple filtrations in the second and third filter boxes, large molecules are retained on the outside of the second and third filter boxes, preventing them from clogging the third filter box. This improves the purity of the crude oil filtration and accelerates the oil supply rate.

[0010] As a further embodiment of the present invention, the first instantaneous sealing mechanism includes a plurality of first slide rods, the first slide rods being fixedly connected to an inner groove provided at the top of the first filter box, a first annular sealing plate being slidably connected to the surfaces of the plurality of first slide rods, a first return spring being sleeved on the surface of the first slide rod, the two ends of the first return spring being fixedly connected to the top of the oil tank and the top of the first annular sealing plate respectively, a fourth threaded rod being symmetrically rotatably connected to the top of the second sealing plate, a first connecting block being threadedly connected to the surface of the fourth threaded rod, a first connecting rod being fixedly connected to the end of the first connecting block, a first snap-fit ​​block being fixedly connected to the end of the connecting rod, a first telescopic spring being sleeved on the surface of the first connecting rod, the two ends of the first telescopic spring being fixedly connected to the first connecting block and the first snap-fit ​​block respectively, a first snap-fit ​​groove being provided on the first annular sealing plate corresponding to the position of the first snap-fit ​​block, the first snap-fit ​​groove and the first snap-fit ​​block snapping together, a first fixing rod being slidably connected to the side wall of the first connecting block, the first fixing rod being fixedly connected to the second sealing plate, a first traction block being fixedly connected to the top of the first snap-fit ​​block, a second traction block being rotatably connected to the top of the threaded rod, and the second traction block being fixedly connected to the first fixing rod;

[0011] The second instantaneous sealing mechanism includes several second slide rods, each fixedly connected to an inner groove at the top of the second filter box. A second annular sealing plate is slidably connected to the surfaces of the several second slide rods. A second return spring is sleeved on the surface of each second slide rod, with both ends of the second return spring fixedly connected to the top of the oil tank and the top of the second annular sealing plate, respectively. A fifth threaded rod is symmetrically rotatably connected to the top of the third sealing plate. A second connecting block is threadedly connected to the surface of the fifth threaded rod. A second connecting rod is fixedly connected to the end of the second connecting block. A second snap-fit ​​block is fixedly connected to the end of the second connecting rod. A second telescopic spring is sleeved on the surface of the second connecting rod, with both ends fixedly connected to the second connecting block and the second snap-fit ​​block, respectively. A second snap-fit ​​groove is provided on the second annular sealing plate corresponding to the position of the second snap-fit ​​block, and the second snap-fit ​​groove and the second snap-fit ​​block snap together. A second fixed rod is slidably connected to the side wall of the second connecting block, and the second fixed rod is fixedly connected to the third sealing plate. A third traction block is fixedly connected to the top of the second snap-fit ​​block. A fourth traction block is rotatably connected to the top of the threaded rod, and the fourth traction block is fixedly connected to the second fixed rod.

[0012] The third instantaneous sealing mechanism includes several third sliding rods, which are fixedly connected to the bottom of the oil tank. A third annular sealing plate is slidably connected to the surfaces of the several third sliding rods. A third return spring is sleeved on the surface of each third sliding rod, with its two ends fixedly connected to the top of the oil tank and the top of the third annular sealing plate, respectively. A sixth threaded rod is symmetrically rotatably connected to the bottom of the oil tank. A third connecting block is threadedly connected to the surface of the sixth threaded rod. A third connecting rod is fixedly connected to the end of the third connecting block. A third snap-fit ​​block is fixedly connected to the end of the third connecting rod. A third telescopic spring is sleeved on the surface of the third connecting rod, with its two ends fixedly connected to the third connecting block and the third snap-fit ​​block, respectively. A third snap-fit ​​groove is provided on the third annular sealing plate corresponding to the position of the third snap-fit ​​block, and the third snap-fit ​​groove and the third snap-fit ​​block snap together. A third fixed rod is slidably connected to the side wall of the third connecting block, and the third fixed rod is fixedly connected to the bottom of the oil tank. A fifth traction block is fixedly connected to the top of the third snap-fit ​​block, and a sixth traction block is rotatably connected to the top of the threaded rod. The sixth traction block is fixedly connected to the third fixed rod.

[0013] During operation, when the drive mechanism is activated, the first pressure plate moves upward, the second pressure plate moves downward, and the third pressure plate moves upward. Correspondingly, the first locking block drives the first annular sealing box upward. The second locking block, not engaged with the locking groove, moves downward independently, while the second annular sealing box remains stable. The third locking block drives the third annular sealing box upward until they reach their ends. Then, the first and second traction blocks contact and compress, causing the first locking block to disengage from the first locking groove and the third locking block to disengage from the third locking groove. At this point, under the action of the third return spring of the first return spring, the first and third annular sealing plates move downward instantaneously, pushing the first and third filter boxes into the... The first pressure plate is sealed, while the second snap-fit ​​block engages with the second snap-fit ​​groove. When the first pressure plate moves downward, the second pressure plate moves upward, and the third pressure plate moves downward, the first and third annular sealing boxes reseal the first and third filter boxes. The second annular sealing plate is pulled upward by the second snap-fit ​​block, and the second filter box is opened. At this time, the crude oil in the third filter box, under the pressure of the third and second pressure plates, flows rapidly into the second filter box. Then, the third and first filter boxes are opened, and under the action of the first and second pressure plates, the crude oil in the second filter box flows rapidly into the first filter box, thereby greatly increasing the filtration speed and oil supply speed of the crude oil in the oil tank.

[0014] As a further embodiment of the present invention, the driving mechanism includes an annular rack and pinion box, which is rotatably connected to the top of the oil tank. A first gear is symmetrically meshed on the outer wall of the annular rack and pinion box, and the first gear is fixedly connected to the top of a sixth threaded rod. A servo motor is fixedly connected to the top of one of the sixth threaded rods. A second gear and a third gear are meshed on the inner wall of the annular rack and pinion box, respectively. The second and third gears are fixedly connected to the tops of the third and fifth threaded rods, respectively. A fourth gear is meshed on the side of the second gear, and the fourth gear is fixedly connected to the top of the second threaded rod. A first belt drives the surfaces of the second and fourth threaded rods together, and a second belt drives the surfaces of the first and second threaded rods together. During operation, by starting the servo motor, the sixth threaded rod rotates. Through the meshing action of the first gear and the annular rack and pinion box, the annular rack and pinion box rotates at the top of the oil tank, thereby causing the second and third gears to rotate, which in turn causes the third and fifth threaded rods to rotate. Under the transmission of the first and second belts, the first, second, third, fourth, fifth, and sixth threaded rods all rotate synchronously, providing a power source for the device.

[0015] As a further embodiment of the present invention, a fourth annular sealing plate is fixedly connected to the top of the oil tank, and the inner side of the fourth annular sealing plate is slidably connected to the outer wall of the third annular sealing plate. During operation, by setting the fourth annular sealing plate, the contact between crude oil and internal parts is blocked, so as to avoid the parts from being contaminated with crude oil and causing the parts to become blocked and unable to operate normally.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention, by setting up a pressurizing mechanism and a first instantaneous sealing mechanism, when the first threaded rod rotates, the first pressurizing plate moves upward. Under the action of the first instantaneous sealing mechanism, the first filter box is sealed, and the pressure inside the first filter box decreases. The crude oil in the oil tank is quickly drawn into the oil tank under the action of pressure. When the first pressurizing plate moves to the highest point, the trough opens. Then the first threaded rod rotates in the opposite direction, and the first pressurizing plate moves downward until the first pressurizing plate moves to the lowest point. The trough is then resealed by the sliding plate. Subsequently, the first pressurizing plate moves upward, transporting the crude oil to the top and being discharged by the oil drain pipe. This continuously pressurizes the first filter box, accelerating the drawing of crude oil from the oil tank into the first filter box, thereby increasing the oil supply speed.

[0018] 2. This invention, by setting up a second filter box, a third filter box, a second instantaneous sealing mechanism, and a third instantaneous sealing mechanism, uses a third pressure plate to accelerate the intake of crude oil from the oil tank into the first filter box, and a second pressure plate to accelerate the discharge of crude oil from the second filter box into the first filter box, thereby increasing the filtration speed of the first filter box. At the same time, after undergoing multiple filtrations in the third and second filter boxes, large molecules are retained on the outside of the second and third filter boxes, preventing large molecules from clogging the third filter box. This improves the purity of the crude oil filtration while accelerating the oil supply speed. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a first schematic diagram of the overall structure of the present invention;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a cross-sectional view of the overall structure in this invention;

[0023] Figure 4 for Figure 3 Enlarged view at point B in the middle;

[0024] Figure 5 This is a top view of the overall structure of the present invention (with the fuel tank hidden).

[0025] Figure 6 This is a cross-sectional view of the first filter box in this invention;

[0026] Figure 7 This is a cross-sectional view of the third filter box in this invention;

[0027] Figure 8 This is a cross-sectional view of the second filter box in this invention;

[0028] Figure 9 This is a diagram showing the connection of the sealing mechanism at the first instant in this invention;

[0029] Figure 10 This is a perspective view of the third annular sealing plate in this invention;

[0030] Figure 11 This is a perspective view of the first annular sealing plate in this invention.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] Oil tank 1, First filter box 2, Second filter box 3, Third filter box 4, First sealing plate 5, Second sealing plate 6, Third sealing plate 7, Oil drain pipe 8, Oil injection pipe 9, First threaded rod 10, First pressure plate 11, Leakage groove 12, Slide plate 13, First pushing block 14, Second pushing block 15, Second pressure plate 16, Second threaded rod 17, Third pressure plate 18, Third threaded rod 19, First sliding rod 20, First annular sealing plate 21, First return spring 22, Fourth threaded rod 23, First connecting block 24, First connecting rod 25, First snap-fit ​​block 26, First telescopic spring 27, First snap-fit ​​groove 28, First fixing rod 29, First traction block 30, Second traction block 31, Second sliding rod 32, Second annular sealing plate 33 34. Second return spring, 35. Fifth threaded rod, 36. Second connecting block, 37. Second connecting rod, 38. Second snap-fit ​​block, 39. Second telescopic spring, 40. Second snap-fit ​​groove, 41. Second fixing rod, 42. Third traction block, 43. Fourth traction block, 44. Third slide rod, 45. Third annular sealing plate, 46. Third return spring, 47. Sixth threaded rod, 48. Third connecting block, 49. Third connecting rod, 50. Third snap-fit ​​block, 51. Third telescopic spring, 52. Third snap-fit ​​groove, 53. Fifth traction block, 54. Sixth traction block, 55. Annular rack and pinion box, 56. First gear, 57. Servo motor, 58. Second gear, 59. Third gear, 60. Fourth gear, 61. First belt, 62. Second belt, 63. Fourth annular sealing plate, 64. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1-7This invention provides a technical solution: a multi-stage pressurized coarse oil filter based on marine equipment, comprising an oil tank 1, a first filter box 2 fixedly connected to the bottom of the oil tank 1, a second filter box 3 externally fitted to the first filter box 2 and fixedly connected to the bottom of the oil tank 1, a third filter box 4 externally fitted to the second filter box 3 and fixedly connected to the bottom of the oil tank 1, a first sealing plate 5 sealed at the top of the first filter box 2, a second sealing plate 6 fixedly connected to the top of the outer side wall of the first filter box 2 and the top of the inner side wall of the second filter box 3, a third sealing plate 7 fixedly connected to the top of the outer side wall of the second filter box 3 and the top of the inner side wall of the third filter box 4, an oil drain pipe 8 connected to the top of the first sealing plate 5, the top of the oil drain pipe 8 penetrating the top of the oil tank 1 and fixedly connected to the top of the oil tank 1, an oil injection pipe 9 connected to the bottom of the oil tank 1, and a pressurization mechanism provided inside the first filter box 2;

[0035] The pressurizing mechanism includes a first threaded rod 10. The bottom end of the first threaded rod 10 is rotatably connected to the bottom end of the first filter box 2. The top end of the first threaded rod 10 passes through the top end of the first sealing plate 5 and the top end of the oil tank 1 in sequence and is rotatably connected to the first sealing plate 5 and the oil tank 1 respectively. A driving mechanism is provided at the top end of the first threaded rod 10. A first pressurizing plate 11 is threadedly connected to the surface of the first threaded rod 10. The first pressurizing plate 11 is located at the bottom of the first filter box 2. The first pressurizing plate 11 is longitudinally slidably connected to the inner side wall of the oil filter barrel. The surface of the first pressurizing plate 11 is symmetrically provided with grooves 12. Slide plates 13 are slidably connected in each groove 12. The slide plates 13 seal the grooves. The top and bottom ends of the slide plates 13 are symmetrically fixedly connected to first pushing blocks 14. The top and bottom ends of the oil tank are respectively fixedly connected to second pushing blocks 15 that cooperate with the first pushing blocks 14. A first instantaneous sealing mechanism is provided inside the first filter box 2.

[0036] In existing technologies, during prolonged use of coarse oil filters, the viscous nature of the coarse oil causes its speed of passing through the filter screen to decrease, reducing the filtration speed and hindering the oil supply speed. This results in problems with the ship's normal operation over five years. The specific operation is as follows: First, coarse oil is injected into the oil tank 1 through the oil injection pipe 9. Then, the drive mechanism is activated, causing the first threaded rod 10 to rotate repeatedly. As the first threaded rod 10 rotates, the first pressure plate 11 moves upward. In the initial instant, the sealing mechanism seals the first filter box 2. With the action of the first pressure plate, the filter box 2 moves upward, gradually opening its filter holes. As the first pressure plate 11 moves upward, the pressure inside the first filter box 2 decreases, and the coarse oil in the oil tank 1 is rapidly drawn into the tank under the pressure. When the first pressure plate 11 reaches its highest point, the first push block 14 and the second push block 15 come into contact and press against each other, causing the first push block 14 to move the slide plate 13 and open the trough 12. Then, the first threaded rod 10 is driven in the opposite direction by the drive mechanism. Under the action of the threaded connection, the first pressure plate 11 moves downward. Since the trough 12 is open at this time, the pressure inside the oil filter tank remains unchanged until the first pressure plate 11 moves to the lowest point. The first push block 14 and the second push block 15 come into contact and press against each other, and the trough 12 is resealed by the slide plate 13. Then, the first pressure plate 11 moves upward and delivers the crude oil to the top, where it is discharged by the oil drain pipe 8. The above movement is repeated, and the principle is the same as above, so that the first filter box 2 is continuously pressurized, and the crude oil in the oil tank 1 is accelerated to be drawn into the first filter box 2, thereby increasing the oil supply speed.

[0037] As a further embodiment of the present invention, a second pressure plate 16 is slidably connected to the inner wall of the second filter box 3 and the outer wall of the first filter box 2. The second pressure plate 16 is at the top of the second filter box 3. A second threaded rod 17 is threaded through and connected to the top of the second pressure plate 16. The top of the second threaded rod 17 is rotatably connected to the bottom of the second filter box 3. After the top of the second threaded rod 17 passes through the top of the oil tank 1, it is rotatably connected to the oil tank 1. A second instantaneous sealing mechanism is provided inside the second filter box 3. A third pressure plate 18 is slidably connected to the inner wall of the third filter box 4 and the inner wall of the second filter box 3. The third pressure plate 18 is at the bottom of the third filter box 4. A third threaded rod 19 is threaded through and connected to the top of the third pressure plate 18. The top of the third threaded rod 19 is rotatably connected to the bottom of the second filter box 3. After the top of the third threaded rod 19 passes through the top of the oil tank 1, it is rotatably connected to the oil tank 1. A third instantaneous sealing mechanism is provided inside the third filter box. During operation, in order to avoid To prevent large molecules in the crude oil from clogging the first filter box 2, thus reducing the filtration speed and oil supply rate, a second filter box 3 and a third filter box 4 are installed. When the drive mechanism is activated, the second threaded rod 17 and the third threaded rod 19 rotate, the second pressure plate 16 moves downward, and the third pressure plate 18 moves upward. Under the action of the second and third instantaneous sealing mechanisms, the third pressure plate 18 accelerates the intake of crude oil from the oil tank 1 into the first filter box 2, while the second pressure plate 16 accelerates the discharge of crude oil from the second filter box 3 into the first filter box 2. This increases the filtration speed of the first filter box 2. At the same time, after undergoing multiple filtrations in the third filter box 4 and the second filter box 3, large molecules are retained on the outside of the second filter box 3 and the third filter box 4, preventing them from clogging the third filter box. This improves the purity of the crude oil filtration and accelerates the oil supply rate.

[0038] As a further embodiment of the present invention, the first instantaneous sealing mechanism includes several first slide rods 20, which are fixedly connected to an inner groove provided at the top of the first filter box 2. A first annular sealing plate 21 is slidably connected to the surfaces of the several first slide rods 20. A first return spring 22 is sleeved on the surface of each first slide rod 20, and both ends of the first return spring 22 are respectively fixedly connected to the top of the oil tank 1 and the top of the first annular sealing plate 21. A fourth threaded rod 23 is symmetrically rotatably connected to the top of the second sealing plate 6. A first connecting block 24 is threadedly connected to the surface of the fourth threaded rod 23. A first connecting rod 25 is fixedly connected to the end of the first connecting block 24. The end of the connecting rod is fixedly connected to... A first snap-fit ​​block 26 is attached, and a first telescopic spring 27 is sleeved on the surface of a first connecting rod 25. The two ends of the first telescopic spring 27 are respectively fixedly connected to the first connecting block 24 and the first snap-fit ​​block 26. A first snap-fit ​​groove 28 is opened on the first annular sealing plate 21 corresponding to the position of the first snap-fit ​​block 26. The first snap-fit ​​groove 28 and the first snap-fit ​​block 26 snap-fit ​​together. A first fixing rod 29 is slidably connected to the side wall of the first connecting block 24. The first fixing rod 29 is fixedly connected to the second sealing plate 6. A first traction block 30 is fixedly connected to the top of the first snap-fit ​​block 26. A second traction block 31 is rotatably connected to the top of the threaded rod. The second traction block 31 is fixedly connected to the first fixing rod 29.

[0039] The second instantaneous sealing mechanism includes several second slide rods 32, which are fixedly connected to an inner groove at the top of the second filter box 3. A second annular sealing plate 33 is slidably connected to the surfaces of the several second slide rods 32. A second return spring 34 is sleeved on the surface of each second slide rod 32, with both ends of the second return spring 34 fixedly connected to the top of the oil tank 1 and the top of the second annular sealing plate 33, respectively. A fifth threaded rod 35 is symmetrically rotatably connected to the top of the third sealing plate 7. A second connecting block 36 is threadedly connected to the surface of the fifth threaded rod 35. A second connecting rod 37 is fixedly connected to the end of the second connecting block 36. A second clamp is fixedly connected to the end of the second connecting rod 37. The second connecting rod 37 is fitted with a second telescopic spring 39. The two ends of the second telescopic spring 39 are fixedly connected to the second connecting block 36 and the second snap-fit ​​block 38, respectively. The second annular sealing plate 33 is provided with a second snap-fit ​​groove 40 corresponding to the position of the second snap-fit ​​block 38. The second snap-fit ​​groove 40 and the second snap-fit ​​block 38 snap-fit ​​together. The second connecting block 36 is slidably connected with a second fixing rod 41. The second fixing rod 41 is fixedly connected to the third sealing plate 7. The top of the second snap-fit ​​block 38 is fixedly connected with a third traction block 42. The top of the threaded rod is rotatably connected with a fourth traction block 43. The fourth traction block 43 is fixedly connected to the second fixing rod 41.

[0040] The third instantaneous sealing mechanism includes several third slide rods 44, which are fixedly connected to the bottom of the oil tank 1. A third annular sealing plate 45 is slidably connected to the surfaces of the several third slide rods 44. A third return spring 46 is sleeved on the surface of each third slide rod 44. The two ends of the third return spring 46 are fixedly connected to the top of the oil tank 1 and the top of the third annular sealing plate 45, respectively. A sixth threaded rod 47 is symmetrically rotatably connected to the bottom of the oil tank 1. A third connecting block 48 is threadedly connected to the surface of the sixth threaded rod 47. A third connecting rod 49 is fixedly connected to the end of the third connecting block 48. A third locking block 50 is fixedly connected to the end of the third connecting rod 49. A third telescopic spring 51 is sleeved on the surface of the three connecting rods 49. The two ends of the third telescopic spring 51 are fixedly connected to the third connecting block 48 and the third snap-fit ​​block 50, respectively. The third annular sealing plate 45 has a third snap-fit ​​groove 52 corresponding to the position of the third snap-fit ​​block 50. The third snap-fit ​​groove 52 and the third snap-fit ​​block 50 snap-fit ​​together. A third fixing rod 53 is slidably connected to the side wall of the third connecting block 48. The third fixing rod 53 is fixedly connected to the bottom end of the oil tank 1. A fifth traction block 54 is fixedly connected to the top of the third snap-fit ​​block 50. A sixth traction block 55 is rotatably connected to the top of the threaded rod. The sixth traction block 55 is fixedly connected to the third fixing rod 53.

[0041] During operation, when the drive mechanism is activated, the first pressure plate 11 moves upward, the second pressure plate 16 moves downward, and the third pressure plate 18 moves upward. Correspondingly, the first locking block 26 drives the first annular sealing box upward, while the second locking block 38, not engaged with the locking groove, moves downward independently, keeping the second annular sealing box stable. The third locking block 50 drives the third annular sealing box upward until they reach their ends. Then, the first traction block 30 and the second traction block 31 contact and compress, causing the first locking block 26 to disengage from the first locking groove 28 and the third locking block 50 to disengage from the third locking groove 52. At this point, under the action of the third return spring 46 of the first return spring 22, the first annular sealing plate 21 and the third annular sealing plate 45 move downward instantaneously, closing the first filter box 2 and the third filter box. 4. The seal is performed, and the second snap-fit ​​block 38 snaps into the second snap-fit ​​groove 40. When the first pressure plate 11 moves downward, the second pressure plate 16 moves upward, and the third pressure plate 18 moves downward, the first annular sealing box and the third annular sealing box reseal the first filter box 2 and the third filter box 4. The second annular sealing plate 33 is pulled upward by the second snap-fit ​​block 38, and the second filter box 3 is opened. At this time, the crude oil in the third filter box 4, under the pressure of the third pressure plate 18 and the second pressure plate, flows rapidly into the second filter box 3. Then, the third filter box 4 and the first filter box 2 are opened. Under the action of the first pressure plate 11 and the second pressure plate 16, the crude oil in the second filter box 3 is rapidly flowed into the first filter box 2, thereby greatly increasing the filtration speed and oil supply speed of the crude oil in the oil tank 1.

[0042] As a further embodiment of the present invention, the driving mechanism includes an annular rack box 56, which is rotatably connected to the top of the oil tank 1. A first gear 57 is symmetrically meshed on the outer wall of the annular rack box 56. The first gear 57 is fixedly connected to the top of a sixth threaded rod 47. A servo motor 58 is fixedly connected to the top of one of the sixth threaded rods 47. A second gear 59 and a third gear 60 are respectively meshed on the inner wall of the annular rack box 56. The second gear 59 and the third gear 60 are respectively fixedly connected to the tops of a third threaded rod 19 and a fifth threaded rod 35. A fourth gear 61 is meshed on the side of the second gear 59. The fourth gear 61 is fixedly connected to the top of a second threaded rod 17. The surfaces of the second threaded rod 17 and the fourth threaded rod 23 are shared. The device is driven by a first belt 62, and the surfaces of the first threaded rod 10 and the second threaded rod 17 are driven by a second belt 63. During operation, the servo motor 58 is started, causing the sixth threaded rod 47 to rotate. Through the meshing of the first gear 57 and the ring rack box 56, the ring rack box 56 rotates at the top of the oil tank 1, thereby causing the second gear 59 and the third gear 60 to rotate, which in turn causes the third threaded rod 19 and the fifth threaded rod 35 to rotate. Under the drive of the first belt 62 and the second belt 63, the first threaded rod 10, the second threaded rod 17, the third threaded rod 19, the fourth threaded rod 23, the fifth threaded rod 35 and the sixth threaded rod 47 all rotate synchronously, providing a power source for the device.

[0043] As a further embodiment of the present invention, a fourth annular sealing plate 64 is fixedly connected to the top of the oil tank 1, and the inner side of the fourth annular sealing plate 64 is slidably connected to the outer wall of the third annular sealing plate 45. During operation, by setting the fourth annular sealing plate 64, the contact between crude oil and internal parts is blocked, so as to prevent the parts from being contaminated with crude oil and causing the parts to become blocked and unable to operate normally.

[0044] Working principle: First, crude oil is injected into oil tank 1 through oil injection pipe 9. Then, the drive mechanism is activated, causing the first threaded rod 10 to rotate repeatedly. When the first threaded rod 10 rotates, the first pressure plate 11 moves upward. Under the action of the sealing mechanism at the first instant, the first filter box 2 is sealed. As the first pressure plate moves upward, the filter holes of the first filter box 2 are gradually opened. When the first pressure plate 11 moves upward, the pressure inside the first filter box 2 decreases, and the crude oil in oil tank 1 is quickly drawn into oil tank 1 under the action of pressure. When the first pressure plate 11 reaches its highest point, the first pushing block 14 and the second pushing block 15 contact and squeeze. The first push block 14 causes the slide plate 13 to move, opening the trough 12. Then, the first threaded rod 10 is driven in the opposite direction by the drive mechanism. Under the action of the threaded connection, the first pressure plate 11 moves downward. Since the trough 12 is open at this time, the pressure inside the oil filter tank remains unchanged until the first pressure plate 11 moves to the lowest end. The first push block 14 and the second push block 15 come into contact and squeeze, and the trough 12 is resealed by the slide plate 13. Then, the first pressure plate 11 moves upward, transporting the crude oil to the top and being discharged by the oil drain pipe 8. The above movement is repeated, and the principle is the same as above, so that the pressure inside the first filter box 2 is continuously increased, and the crude oil in the oil tank 1 is accelerated to be drawn into the first filter box 2.

[0045] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-stage pressurized coarse oil filter based on marine equipment, comprising an oil tank (1), characterized in that: The bottom of the oil tank (1) is fixedly connected to a first filter box (2), the first filter box (2) is covered by a second filter box (3), the second filter box (3) is fixedly connected to the bottom of the oil tank (1), the second filter box (3) is covered by a third filter box (4), the third filter box (4) is fixedly connected to the bottom of the oil tank (1), the top of the first filter box (2) is sealed with a first sealing plate (5), the top of the outer wall of the first filter box (2) and the top of the inner wall of the second filter box (3) are fixedly connected to a second sealing plate (6), the top of the outer wall of the second filter box (3) and the top of the inner wall of the third filter box (4) are fixedly connected to a third sealing plate (7), the top of the first sealing plate (5) is connected to an oil drain pipe (8), the top of the oil drain pipe (8) passes through the top of the oil tank (1) and is fixedly connected to the top of the oil tank (1), the bottom of the oil tank (1) is connected to an oil injection pipe (9), and a pressurization mechanism is provided inside the first filter box (2); The pressurizing mechanism includes a first threaded rod (10), the bottom end of which is rotatably connected to the bottom end of the first filter box (2). The top end of the first threaded rod (10) passes through the top end of the first sealing plate (5) and the top end of the oil tank (1) in sequence and is rotatably connected to the first sealing plate (5) and the oil tank (1) respectively. A driving mechanism is provided at the top end of the first threaded rod (10). A first pressurizing plate (11) is threadedly connected to the surface of the first threaded rod (10), wherein the first pressurizing plate (11) is located at the bottom of the first filter box (2). The first pressure plate (11) is longitudinally slidably connected to the inner wall of the oil filter tank. The surface of the first pressure plate (11) is symmetrically provided with grooves (12). Each groove (12) is slidably connected with a sliding plate (13), which seals the groove. The top and bottom of the sliding plate (13) are symmetrically fixedly connected with a first pushing block (14). The top and bottom of the oil tank are respectively fixedly connected with a second pushing block (15) that cooperates with the first pushing block (14). The first filter box (2) is provided with a first instantaneous sealing mechanism. The first instantaneous sealing mechanism includes several first slide rods (20), which are fixedly connected to the inner groove at the top of the first filter box (2). The surfaces of the several first slide rods (20) are slidably connected to a first annular sealing plate (21). A first return spring (22) is sleeved on the surface of the first slide rod (20). The two ends of the first return spring (22) are fixedly connected to the top of the oil tank (1) and the top of the first annular sealing plate (21), respectively. A fourth threaded rod (23) is symmetrically rotatably connected to the top of the second sealing plate (6). A first connecting block (24) is threadedly connected to the surface of the fourth threaded rod (23). A first connecting rod (25) is fixedly connected to the end of the first connecting block (24). A first snap-fit ​​block (26) is fixedly connected to the end of the connecting rod. The first connecting rod (25) is fitted with a first telescopic spring (27), and the two ends of the first telescopic spring (27) are fixedly connected to the first connecting block (24) and the first snap-fit ​​block (26) respectively. The first annular sealing plate (21) is provided with a first snap-fit ​​groove (28) corresponding to the position of the first snap-fit ​​block (26). The first snap-fit ​​groove (28) and the first snap-fit ​​block (26) snap-fit ​​together. The first connecting block (24) is slidably connected with a first fixing rod (29), and the first fixing rod (29) is fixedly connected to the second sealing plate (6). The top of the first snap-fit ​​block (26) is fixedly connected with a first traction block (30), and the top of the threaded rod is rotatably connected with a second traction block (31). The second traction block (31) is fixedly connected to the first fixing rod (29). A second pressure plate (16) is slidably connected to the inner wall of the second filter box (3) and the outer wall of the first filter box (2). The second pressure plate (16) is at the top of the second filter box (3). A second threaded rod (17) is threaded through and connected to the top of the second pressure plate (16). The top of the second threaded rod (17) is rotatably connected to the bottom of the second filter box (3). After the top of the second threaded rod (17) passes through the top of the oil tank (1), it is rotatably connected to the oil tank (1). A second instantaneous sealing mechanism is provided inside the second filter box (3). The inner wall of the third filter box (4) and the inner wall of the second filter box (3) are slidably connected to a third pressure plate (18). The third pressure plate (18) is at the bottom of the third filter box (4). The top of the third pressure plate (18) is threaded through and connected to a third threaded rod (19). The top of the third threaded rod (19) is rotatably connected to the bottom of the second filter box (3). After the top of the third threaded rod (19) passes through the top of the oil tank (1), it is rotatably connected to the oil tank (1). The third filter box is provided with a third instantaneous sealing mechanism. The second instantaneous sealing mechanism includes several second slide rods (32), which are fixedly connected to the inner groove at the top of the second filter box (3). The surfaces of the several second slide rods (32) are slidably connected to a second annular sealing plate (33). A second return spring (34) is sleeved on the surface of the second slide rods (32). The two ends of the second return spring (34) are fixedly connected to the top of the oil tank (1) and the top of the second annular sealing plate (33), respectively. A fifth threaded rod (35) is symmetrically rotated and connected to the top of the third sealing plate (7). A second connecting block (36) is threadedly connected to the surface of the fifth threaded rod (35). A second connecting rod (37) is fixedly connected to the end of the second connecting block (36). A second snap-fit ​​block (37) is fixedly connected to the end of the second connecting rod (37). 38), a second telescopic spring (39) is sleeved on the surface of the second connecting rod (37). The two ends of the second telescopic spring (39) are fixedly connected to the second connecting block (36) and the second snap-fit ​​block (38) respectively. The second annular sealing plate (33) is provided with a second snap-fit ​​groove (40) corresponding to the position of the second snap-fit ​​block (38). The second snap-fit ​​groove (40) and the second snap-fit ​​block (38) snap-fit ​​together. A second fixing rod (41) is slidably connected to the side wall of the second connecting block (36). The second fixing rod (41) is fixedly connected to the third sealing plate (7). A third traction block (42) is fixedly connected to the top of the second snap-fit ​​block (38). A fourth traction block (43) is rotatably connected to the top of the threaded rod. The fourth traction block (43) is fixedly connected to the second fixing rod (41). The third instantaneous sealing mechanism includes several third slide rods (44), which are fixedly connected to the bottom of the oil tank (1). A third annular sealing plate (45) is slidably connected to the surfaces of the several third slide rods (44). A third return spring (46) is sleeved on the surface of each third slide rod (44). The two ends of the third return spring (46) are fixedly connected to the top of the oil tank (1) and the top of the third annular sealing plate (45), respectively. A sixth threaded rod (47) is symmetrically rotatably connected to the bottom of the oil tank (1). A third connecting block (48) is threadedly connected to the surface of the sixth threaded rod (47). A third connecting rod (49) is fixedly connected to the end of the third connecting block (48). A third snap-fit ​​block (50) is fixedly connected to the end of the third connecting rod (49). A third telescopic spring (51) is sleeved on the surface of the third connecting rod (49). The two ends of the third telescopic spring (51) are fixedly connected to the third connecting block (48) and the third snap-fit ​​block (50) respectively. The third annular sealing plate (45) is provided with a third snap-fit ​​groove (52) corresponding to the position of the third snap-fit ​​block (50). The third snap-fit ​​groove (52) and the third snap-fit ​​block (50) snap-fit ​​together. A third fixing rod (53) is slidably connected to the side wall of the third connecting block (48). The third fixing rod (53) is fixedly connected to the bottom of the oil tank (1). A fifth traction block (54) is fixedly connected to the top of the third snap-fit ​​block (50). A sixth traction block (55) is rotatably connected to the top of the threaded rod. The sixth traction block (55) is fixedly connected to the third fixing rod (53).

2. The multi-stage pressurized coarse oil filter based on marine equipment according to claim 1, characterized in that: The drive mechanism includes an annular rack box (56), which is rotatably connected to the top of the oil tank (1). The outer side wall of the annular rack box (56) is symmetrically meshed with a first gear (57), which is fixedly connected to the top of a sixth threaded rod (47). One of the tops of the sixth threaded rod (47) is fixedly connected to a servo motor (58). The inner side wall of the annular rack box (56) is meshed with a second gear (59) and a third gear (60), which are fixedly connected to the tops of a third threaded rod (19) and a fifth threaded rod (35), respectively. The side of the second gear (59) is meshed with a fourth gear (61), which is fixedly connected to the top of a second threaded rod (17). The surfaces of the second threaded rod (17) and the fourth threaded rod (23) are driven by a first belt (62), and the surfaces of the first threaded rod (10) and the second threaded rod (17) are driven by a second belt (63).

3. A multi-stage pressurized coarse oil filter based on marine equipment according to claim 1, characterized in that: The top of the oil tank (1) is fixedly connected to a fourth annular sealing plate (64), and the inner side of the fourth annular sealing plate (64) is slidably connected to the outer wall of the third annular sealing plate (45).

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