Oil-water separation type oil cylinder

Abstract

The application provides an oil-water separation type oil cylinder and relates to the field of oil cylinders. The oil cylinder comprises a cylinder body, a front cylinder cover, a rear cylinder cover, a piston plate and a piston rod, one end of the cylinder body is fixedly connected with the front cylinder cover, the other end is fixedly connected with the rear cylinder cover, the piston plate is slidably arranged in the cylinder body, one end of the piston rod is fixed with the piston plate, the other end penetrates through the front cylinder cover and extends outward, the front cylinder cover and the rear cylinder cover are both provided with a filling port penetratingly arranged thereon, the front cylinder cover is provided with a water drainage hole penetratingly arranged thereon, a water blocking belt is arranged between the front cylinder cover and the piston plate, and the piston rod penetrates through the water blocking belt. The application has the effect that oil liquid is not easy to mix with water.

Description

Technical Field

[0001] This application relates to the field of hydraulic cylinders, and in particular to an oil-water separation type hydraulic cylinder. Background Technology

[0002] A hydraulic cylinder, also known as a hydraulic actuator, is a hydraulic actuator that converts hydraulic energy into mechanical energy to perform linear reciprocating motion. It has a simple structure and reliable operation. When used to achieve reciprocating motion, it eliminates the need for a speed reduction device, has no transmission backlash, and provides smooth movement. Therefore, it is widely used in the hydraulic systems of various machines.

[0003] Currently, one type of hydraulic cylinder in related technology has a cylinder head that covers the cylinder body, a piston that slides inside the cylinder body, one end of the piston rod that is fixed to the piston, and the other end that extends outward through the cylinder body; a rod chamber is formed between the side of the piston near the piston rod and the cylinder body, and a rodless chamber is formed between the side of the piston away from the piston rod and the cylinder body. In use, the rod chamber is filled with oil, and the piston moves under the action of high-pressure oil.

[0004] However, hydraulic cylinders are used in a variety of environments, including deep-sea environments. In deep-sea environments, hydraulic cylinders need to be submerged in seawater for extended periods to operate. During this process, under the pressure of the deep-sea environment, seawater can easily enter the rod chamber from between the piston rod and the cylinder body, causing the hydraulic fluid to mix with the seawater. Summary of the Invention

[0005] To address the problem of seawater easily mixing with oil, this application provides an oil-water separation type cylinder.

[0006] This application provides an oil-water separation type hydraulic cylinder, which adopts the following technical solution: An oil-water separation type cylinder includes: a cylinder body, a front cylinder head, a rear cylinder head, a piston plate, and a piston rod. One end of the cylinder body is fixedly connected to the front cylinder head, and the other end is fixedly connected to the rear cylinder head. The piston plate is slidably disposed in the cylinder body. One end of the piston rod is fixed to the piston plate, and the other end extends outward through the front cylinder head. Both the front and rear cylinder heads are provided with oil filling ports. The front cylinder head is provided with a drain hole. A water baffle is provided between the front cylinder head and the piston plate, and the piston rod passes through the water baffle.

[0007] By adopting the above technical solution, when oil is filled between the piston plate and the rear cylinder head, the piston plate drives the piston rod to move out of the cylinder body. At this time, the water in the water inlet chamber can be discharged out through the drain hole. When oil is filled between the piston plate and the front cylinder head, the piston plate drives the piston rod to move into the cylinder body. At this time, seawater enters the water inlet chamber through the drain hole. During the entire movement of the oil cylinder, the water baffle can separate the water and oil, so that the water is not easy to mix with the oil, thus making it less likely to reduce the quality of the oil.

[0008] Optionally, both the front cylinder head and the rear cylinder head are provided with a blocking assembly, which includes a ring frame, a magnetic mesh, and a filter cloth. The ring frame is disposed on the front cylinder head and the rear cylinder head, and the magnetic mesh is disposed within the ring frame. The filter cloth is fixedly disposed on the magnetic mesh.

[0009] By adopting the above technical solution, the magnetic mesh can adsorb iron filings in the oil, so that the iron filings are not easily carried into the cylinder along with the oil, thus preventing the cylinder and piston plate from suffering severe wear.

[0010] Optionally, the inner wall of the ring frame is provided with a sliding groove, and a slider is slidably disposed in the sliding groove. The slider is fixedly connected to the magnetic mesh. A collecting component is provided on both the front cylinder head and the rear cylinder head. A docking component is provided between the collecting component and the slider. A pushing component for pushing the magnetic mesh is provided on the piston plate.

[0011] By adopting the above technical solution, during the movement of the piston plate, the pushing component can push the magnetic mesh closer to the corresponding collecting component; during this process, the docking component will also drive the collecting component to align with the magnetic mesh, so that the collecting component can clean the iron filings on the filter cloth, thus preventing the injection of oil into the cylinder from being affected by too many iron filings on the filter cloth.

[0012] Optionally, the collecting component includes: a magnetic plate; a receiving cavity communicating with the oil filling port is provided on both the front cylinder head and the rear cylinder head; a relief groove communicating with the receiving cavity is provided on both the front cylinder head and the rear cylinder head; the magnetic plate is slidably disposed in the receiving cavity; an oil inlet hole is provided through the magnetic plate; and the docking component is disposed between the magnetic plate and the slider.

[0013] By adopting the above technical solution, as the magnetic mesh approaches the magnetic plate, the docking component will drive the magnetic plate to move to the clearance groove; until the magnetic mesh is inserted into the clearance groove, the magnetic mesh and the magnetic plate are aligned, and the magnetic plate will attract the iron filings on the filter cloth to itself, so as to complete the cleaning of the iron filings on the filter cloth.

[0014] Optionally, the collection assembly further includes: a scraper and a push spring; the inner wall of the accommodating cavity is provided with a placement groove; the magnetic plate is provided with a collection groove; one end of the scraper is slidably connected to the placement groove and the other end extends into the collection groove; the push spring is fixed between the bottom of the placement groove and the scraper; and the scraper is provided with a guide surface.

[0015] By adopting the above technical solution, the scraper can scrape the iron filings adsorbed on the magnetic plate into the collection tank for storage, thus making it less likely to affect the next adsorption of iron filings.

[0016] Optionally, the docking assembly includes a driving part, a transmission part, and a rotating part. The driving part includes a driving rack, a driving gear, and a driving rod. The bottom of the slide groove has an installation groove. The driving rod is rotatably installed in the installation groove, and the driving gear is coaxially sleeved on the driving rod. One end of the driving rack is fixed to the slider and meshes with the driving gear, while the other end extends outward through the ring frame. The rotating part is connected to the magnetic plate, and the transmission part is disposed between the rotating part and the driving rod.

[0017] By adopting the above technical solution, as the magnetic mesh approaches the magnetic plate, the drive rack drives the drive gear to rotate, and the drive gear will drive the transmission part and the rotating part to operate in sequence; the operation of the rotating part will drive the magnetic plate to move to the clearance groove, thereby completing the alignment operation between the magnetic plate and the magnetic mesh.

[0018] Optionally, the rotating part includes: a lead screw, a rotating rod, a transmission gear, and a rotating gear. A threaded hole is provided on the magnetic plate. One end of the lead screw is rotatably installed in the accommodating cavity, and the other end is threaded into the threaded hole. The rotating gear is coaxially sleeved on the lead screw. The rotating rod is rotatably installed on the front cylinder head and the rear cylinder head, with one end extending into the accommodating cavity and coaxially fixed with the transmission gear, and the other end penetrating into the mounting groove. The transmission gear meshes with the rotating gear, and the transmission part is disposed between the rotating rod and the driving rod.

[0019] By adopting the above technical solution, after the drive gear rotates, the drive transmission unit will drive the rotating rod to rotate. The rotation of the rotating rod will sequentially drive the transmission gear, the rotating gear and the lead screw to rotate. The rotation of the lead screw will drive the magnetic plate to move closer to the clearance groove until the magnetic plate is aligned with the clearance groove.

[0020] Optionally, the transmission unit includes: a driving gear, a driven gear, a transmission rod, and a plug rod. The driving gear is coaxially sleeved on the driving rod. The rotating rod has a plug hole. The transmission rod is rotatably installed in the mounting groove. The driven gear is coaxially sleeved on the transmission rod. The driving gear meshes with the driven gear. One end of the plug rod is fixed to the transmission rod, and the other end is disposed in the plug hole.

[0021] By adopting the above technical solution, the transmission rod and the rotating rod are connected by the insert rod. This not only does not affect the transmission rod from driving the rotating rod to rotate, but also allows the transmission rod to separate from the rotating rod after the ring frame is removed from the front and rear cylinder heads. Then, the rotating rod can be rotated independently to move the magnetic plate to the clearance slot, which facilitates the removal of iron filings from the collection slot and prevents the collection slot from becoming too full of iron filings to store.

[0022] Optionally, the pushing assembly includes: a push rod, a fixed cylinder, and a support spring. The piston plate has a mounting hole, the fixed cylinder is fixed in the mounting hole, the push rod extends and retracts in the fixed cylinder, and the support spring is fixed between the inner wall of the fixed cylinder and the push rod.

[0023] By adopting the above technical solution, when the piston plate moves, the push rod can contact the magnetic mesh and push the magnetic mesh closer to the magnetic plate so that the magnetic plate can collect iron filings on the filter cloth.

[0024] Optionally, the pushing assembly further includes a magnetic block fixed to the end of the push rod away from the support spring.

[0025] By adopting the above technical solution, the magnetic block can be magnetically attracted to the magnetic mesh, so that when the push rod moves away from the corresponding magnetic plate, the push rod can drive the magnetic mesh back to its initial position.

[0026] In summary, this application includes at least one of the following beneficial effects: 1. During the entire movement of the hydraulic cylinder, the water baffle can separate the water from the oil, so that the water is less likely to mix with the oil, thus preventing the oil quality from being reduced.

[0027] 2. The magnetic mesh can attract iron filings in the oil, so that the iron filings are not easily drawn into the cylinder along with the oil.

[0028] 3. As the magnetic mesh approaches the magnetic plate, the docking assembly will drive the magnetic plate to move to the clearance groove; until the magnetic mesh is inserted into the clearance groove, the magnetic mesh and the magnetic plate are aligned, and the magnetic plate will attract the iron filings on the filter cloth to itself, thus completing the cleaning of the iron filings on the filter cloth. Attached Figure Description

[0029] Figure 1 This is a structural schematic diagram according to an embodiment of this application; Figure 2 yes Figure 1 A schematic rear view; Figure 3 It is along Figure 2 A schematic cross-sectional view taken by the cutting line AA in the diagram; Figure 4 yes Figure 3 A schematic enlarged view of part B in the diagram; Figure 5 yes Figure 3 A schematic enlarged view of part C in the middle; Figure 6 It is along Figure 2 A schematic cross-sectional view cut by the section line DD in the diagram; Figure 7 yes Figure 6 A schematic enlarged view of part E in the middle.

[0030] In the diagram: 1. Cylinder block; 11. Front cylinder head; 111. Drain hole; 112. Water baffle; 12. Rear cylinder head; 13. Piston plate; 131. Mounting hole; 14. Piston rod; 15. Oil filling port; 16. Receiving cavity; 161. Installation groove; 17. Clearance groove; 2. Barrier assembly; 21. Ring frame; 211. Slide groove; 2111. Slider; 212. Mounting groove; 22. Magnetic mesh; 23. Filter cloth; 3. Collection assembly; 31. Magnetic plate; 311. Collection groove; 312. Threaded hole; 313. Oil inlet; 32. Scraper; 321. Guide surface; 33. Push spring; 4. Drive unit; 41. Drive rack; 42. Drive gear; 43. Drive rod; 5. Rotating unit; 51. Lead screw; 52. Rotating rod; 521. Insertion hole; 53. Transmission gear; 54. Rotating gear; 6. Transmission unit; 61. Drive gear; 62. Driven gear; 63. Transmission rod; 64. Insert rod; 7. Push assembly; 71. Push rod; 72. Fixed cylinder; 73. Support spring; 74. Magnetic block. Detailed Implementation

[0031] This application provides an oil-water separation type hydraulic cylinder.

[0032] See Figure 1 An oil-water separation type cylinder generally includes: a cylinder body 1 with openings at both ends, a front cylinder head 11, a rear cylinder head 12, a piston plate 13, and a piston rod 14. The front cylinder head 11 is fixed to one end of the cylinder body 1 by bolts, and the rear cylinder head 12 is fixed to the other end of the cylinder body 1 by bolts.

[0033] See Figure 2 and Figure 3 The piston plate 13 is slidably disposed within the cylinder body 1 and slides along the axial direction of the cylinder body 1. One end of the piston rod 14 is fixed to the piston plate 13, and the other end passes through the front end cover. A rod chamber is formed between the piston plate 13 and the front cylinder head 11, and a rodless chamber is formed between the piston plate 13 and the rear cylinder head 12. In the embodiments of this application, the hydraulic cylinder is horizontally arranged in actual application, and is not vertically arranged.

[0034] See Figure 3 Both the front cylinder head 11 and the rear cylinder head 12 have oil filling ports 15 through their side walls. The oil filling ports 15 are used to connect oil lines. By filling the rodless chamber with oil through the oil filling ports 15, the piston plate 13 can be pushed to drive the piston rod 14 to move out of the cylinder body 1. By filling the rod chamber with oil, the piston plate 13 can be pushed to drive the piston rod 14 to move into the cylinder body 1, thereby making linear motion.

[0035] See Figure 3In addition, a sealing ring is embedded in the inner wall of the cylinder body 1 to improve the sealing between the cylinder body 1 and the front cylinder head 11 and the rear cylinder head 12; a sealing ring is also embedded in the peripheral wall of the piston plate 13 to improve the sealing between the piston plate 13 and the inner wall of the cylinder body 1.

[0036] See Figure 3 A drain hole 111 is provided through the side wall of the front cylinder head 11. A water baffle 112 is detachably installed between the front cylinder head 11 and the piston plate 13 by bolts. In this embodiment, the water baffle 112 is annular and can withstand a certain pressure. A water inlet chamber is formed between the interior of the water baffle 112, the piston plate 13, and the front cylinder head 11. When oil is filled into the rodless chamber, the piston plate 13 drives the piston rod 14 to move outward from the cylinder body 1. At this time, the water in the water inlet chamber can be discharged outward through the drain hole 111. When oil is filled into the rod chamber, the piston plate 13 drives the piston rod 14 to move inward from the cylinder body 1. At this time, seawater enters the water inlet chamber through the drain hole 111. During the entire movement of the oil cylinder, the water baffle 112 can separate the water from the oil, so that the water is not easy to mix with the oil, thereby not easily reducing the quality of the oil.

[0037] See Figure 4 Both the front cylinder head 11 and the rear cylinder head 12 are provided with a blocking component 2 on the side near the piston plate 13. The blocking component 2 can cover the oil filling port 15. When oil is injected into the cylinder 1 through the oil filling port 15, the blocking component 2 can intercept the iron filings in the oil, so that the iron filings in the oil are not easy to enter the cylinder 1, thereby preventing the cylinder 1 and piston plate 13 from being severely worn.

[0038] See Figure 4 The blocking component 2 includes a ring frame 21, a magnetic mesh 22, and a filter cloth 23. The ring frame 21 is detachably mounted on the side wall of the front cylinder head 11 and the rear cylinder head 12 near the piston plate 13 by bolts. The magnetic mesh 22 is disposed inside the ring frame 21. In this embodiment, the magnetic mesh 22 is mesh-shaped so as not to easily affect the injection of oil into the cylinder 1. The magnetic mesh 22 is made of magnetic material so as to attract metal. When oil is injected into the cylinder 1, the magnetic mesh 22 can attract iron filings in the oil so that iron filings are not easily carried into the cylinder 1 along with the oil.

[0039] See Figure 4 The filter mesh 23 is fixed to the side of the magnet mesh 22 away from the piston plate 13. In this embodiment, the filter mesh 23 can be made of nylon mesh. The filter mesh 23 can further filter out iron filings in the oil, thereby improving the quality of oil filtration. In this embodiment, even with a layer of filter mesh 23 between the filter mesh and the magnet mesh 22, the iron filings can still be adsorbed and attached to the filter mesh 23.

[0040] See Figure 4 and Figure 5 A groove 211 is provided on the inner sidewall of the ring frame 21 along the axial direction of the cylinder body 1. A slider 2111 is slidably disposed in the groove 211 and slides along the length of the groove 211. The slider 2111 is fixedly connected to the magnetic mesh 22. A collecting assembly 3 is provided on both the front cylinder head 11 and the rear cylinder head 12, and a docking assembly is provided between the collecting assembly 3 and the slider 2111. A pushing assembly 7 is provided on the piston plate 13. In this embodiment, two sets of pushing assemblies 7 are provided, with one set corresponding to the front cylinder head 11 and the other set corresponding to the rear cylinder head 12.

[0041] See Figure 5 The pushing assembly 7 includes a push rod 71, a fixed cylinder 72, and a support spring 73. A mounting hole 131 is provided on the side wall of the piston plate 13. In this embodiment, the mounting hole 131 is large enough to allow the ring frame 21 to be inserted into the mounting hole 131, thus minimizing interference with the movement of the piston plate 13. The fixed cylinder 72 is fixed within the mounting hole 131, and the push rod 71 extends and retracts within the fixed cylinder 72. One end of the support spring 73 is fixed to the bottom of the fixed cylinder 72, and the other end is fixed to the push rod 71. The support spring 73 is used to push the push rod 71 to extend into the fixed cylinder 72. When the piston plate 13 moves, the push rod 71 can contact the magnetic mesh 22 and push the magnetic mesh 22 closer to the collecting assembly 3, so that the collecting assembly 3 can collect iron filings on the filter cloth 23, thus minimizing the impact of excessive iron filings on the filter cloth 23 on the injection of oil into the cylinder 1.

[0042] See Figure 5 Furthermore, the pushing component 7 also includes a magnetic block 74, which is fixed to the end of the push rod 71 away from the supporting spring 73. The magnetic block 74 can magnetically attract the magnetic mesh 22, so that when the push rod 71 moves away from the corresponding collecting component 3, the push rod 71 can drive the magnetic mesh 22 back to the initial position (the initial position is the end of the ring frame 21 near the piston plate 13), so that the collecting component 3 can collect the iron filings again.

[0043] See Figure 4 The collecting component 3 includes: a magnetic plate 31; a receiving cavity 16 is provided inside the front cylinder head 11 and the rear cylinder head 12, and the receiving cavity 16 is connected to the oil filling port 15; a relief groove 17 is provided on the side of the front cylinder head 11 and the rear cylinder head 12 near the piston plate 13, and the relief groove 17 is connected to the receiving cavity 16. In this embodiment, the size of the relief groove 17 is the same as that of the magnetic mesh 22, so that the magnetic mesh 22 can be inserted into the relief groove 17.

[0044] See Figure 4The magnetic plate 31 is slidably disposed within the accommodating cavity 16 and slides in a direction perpendicular to the axis of the cylinder body 1. In this embodiment, the magnetic plate 31 has a greater adsorption force on iron filings than the magnetic mesh 22. An oil inlet hole 313 is provided through the magnetic plate 31 to facilitate the flow of oil into the cylinder body 1. When the magnetic mesh 22 moves toward the end of the ring frame 21 away from the piston plate 13, the docking assembly will drive the magnetic plate 31 to move to the relief groove 17. After the magnetic mesh 22 is inserted into the relief groove 17, the magnetic mesh 22 and the magnetic plate 31 are aligned, and the magnetic plate 31 adsorbs the iron filings on the filter cloth 23 onto itself to complete the cleaning of the iron filings on the filter cloth 23. When the magnetic mesh 22 is reset, the docking assembly will drive the magnetic plate 31 back to its original position.

[0045] See Figure 4 Furthermore, the collecting assembly 3 also includes a scraper 32 and a push spring 33. A placement groove 161 is formed on the inner wall of the accommodating cavity 16 near the ring frame 21, and a collecting groove 311 is formed on the side of the magnetic plate 31 near the ring frame 21. One end of the scraper 32 is slidably connected to the placement groove 161 and slides along the axis of the cylinder 1; the other end is disposed in the collecting groove 311. The scraper 32 can scrape the iron filings adsorbed on the magnetic plate 31 into the collecting groove 311 for storage, thus preventing it from affecting the next adsorption of iron filings.

[0046] See Figure 4 One end of the push spring 33 is fixed to the bottom of the mounting groove 161, and the other end is fixed to the scraper 32. The push spring 33 can push the scraper 32 to always abut against the magnetic plate 31. A guide surface 321 is provided on the side of the scraper 32 away from the push spring 33 and away from the relief groove 17. The end of the guide surface 321 near the push spring 33 is higher than the opening of the collection groove 311. When the magnetic plate 31 moves to the relief groove 17, the scraper 32 can automatically disengage from the collection groove 311 through the setting of the guide surface 321 and abut against the side of the magnetic plate 31 near the ring frame 21. After the magnetic plate 31 returns to its original position, the scraper 32 is pushed back into the collection groove 311 to block the iron filings, so that they are not easily carried away by the oil due to the leakage of oil in the collection groove 311.

[0047] See Figure 4 , Figure 6 and Figure 7 The docking assembly includes: a drive unit 4, a transmission unit 6, and a rotating unit 5.

[0048] See Figure 4The drive unit 4 includes a drive rack 41, a drive gear 42, and a drive rod 43. A mounting groove 212 is provided at the bottom of the slide groove 211 and along its length. The drive rod 43 is rotatably mounted in the mounting groove 212 and located at one end of the slide groove 211 near the piston plate 13. The drive gear 42 is coaxially sleeved on the drive rod 43. One end of the drive rack 41 is fixed to the slider 2111 and meshes with the drive gear 42; the other end extends outward through the ring frame 21. When the magnetic mesh 22 is inserted into the clearance groove 17, the drive rack 41 is no longer exposed outside the ring frame 21.

[0049] See Figure 7 The rotating part 5 includes: a lead screw 51, a rotating rod 52, a transmission gear 53, and a rotating gear 54. A threaded hole 312 is provided at one end of the magnetic plate 31 near the relief groove 17. One end of the lead screw 51 is rotatably mounted on the inner wall of the accommodating cavity 16, and the other end is threaded into the threaded hole 312. The rotating gear 54 is coaxially sleeved on the end of the lead screw 51 away from the magnetic plate 31. The rotating rod 52 is rotatably mounted on the side of the front cylinder head 11 and the rear cylinder head 12 near the piston plate 13, with one end penetrating into the accommodating cavity 16 and the other end penetrating into the mounting groove 212.

[0050] See Figure 7 The rotating rod 52 is perpendicular to the lead screw 51. The transmission gear 53 is coaxially sleeved on one end of the rotating rod 52 located in the accommodating cavity 16, and the transmission gear 53 meshes with the rotating gear 54.

[0051] See Figure 4 and Figure 7 The transmission unit 6 includes a driving gear 61, a driven gear 62, a transmission rod 63, and a connecting rod 64. The driving gear 61 is coaxially sleeved on the drive rod 43. The transmission rod 63 is rotatably mounted in the mounting groove 212, and the transmission rod 63 is perpendicular to the drive rod 43. The driven gear 62 is coaxially sleeved on the end of the transmission rod 63 near the drive rod 43, and the driving gear 61 meshes with the driven gear 62.

[0052] See Figure 4 and Figure 7The rotating rod 52 has a socket 521 at the end away from the lead screw 51. In this embodiment, the socket 521 is square. In this embodiment, the insert rod 64 is square. One end of the insert rod 64 is fixedly connected to the end of the transmission rod 63 away from the drive rod 43, and the other end is set in the socket 521. During the process of pushing the magnetic mesh 22 into the relief groove 17, the drive rack 41 drives the drive gear 42 to rotate. The rotation of the drive gear 42 will sequentially drive the drive rod 43, the drive gear 61, the driven gear 62, the transmission rod 63, the rotating rod 52, the transmission gear 53, the rotating gear 54 and the lead screw 51 to rotate. The rotation of the lead screw 51 will drive the magnetic plate 31 to move closer to the relief groove 17 until the magnetic plate 31 is aligned with the relief groove 17, that is, aligned with the magnetic mesh 22, so that the magnetic plate 31 can attract the iron filings on the filter cloth 23. Conversely, during the process of the magnetic mesh 22 resetting, the magnetic plate 31 will also reset.

[0053] The working principle of the oil-water separation cylinder of this application is as follows: When oil is filled into the rodless chamber, the piston plate 13 drives the piston rod 14 to move outward from the cylinder body 1. At this time, the water in the water inlet chamber can be discharged outward through the drain hole 111. When oil is filled into the rod chamber, the piston plate 13 drives the piston rod 14 to move inward from the cylinder body 1. At this time, seawater enters the water inlet chamber through the drain hole 111. During the entire movement of the cylinder, the water baffle 112 can separate the water and oil, so that the water is not easy to mix with the oil, thereby not easily reducing the quality of the oil.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An oil-water separation type hydraulic cylinder, characterized in that, include: The cylinder body (1), front cylinder head (11), rear cylinder head (12), piston plate (13) and piston rod (14) are provided. One end of the cylinder body (1) is fixedly connected to the front cylinder head (11) and the other end is fixedly connected to the rear cylinder head (12). The piston plate (13) is slidably disposed in the cylinder body (1). One end of the piston rod (14) is fixed to the piston plate (13) and the other end extends outward through the front cylinder head (11). Both the front cylinder head (11) and the rear cylinder head (12) are provided with oil filling ports (15). The front cylinder head (11) is provided with drain holes (111). A water baffle (112) is provided between the front cylinder head (11) and the piston plate (13), and the piston rod (14) passes through the water baffle (112). Both the front cylinder head (11) and the rear cylinder head (12) are provided with a blocking assembly (2). The blocking assembly (2) includes: a ring frame (21), a magnetic mesh (22) and a filter cloth (23). The ring frame (21) is provided on the front cylinder head (11) and the rear cylinder head (12), and the magnetic mesh (22) is provided inside the ring frame (21). The filter cloth (23) is fixedly provided on the magnetic mesh (22). The inner wall of the ring frame (21) is provided with a sliding groove (211), and a slider (2111) is slidably arranged in the sliding groove (211). The slider (2111) is fixedly connected to the magnetic mesh (22). A collection component (3) is provided on both the front cylinder head (11) and the rear cylinder head (12). A docking component is provided between the collection component (3) and the slider (2111). A pushing component (7) for pushing the magnetic mesh (22) is provided on the piston plate (13).

2. The oil-water separation type cylinder according to claim 1, characterized in that, The collecting component (3) includes: a magnetic plate (31), a receiving cavity (16) communicating with the oil filling port (15) on both the front cylinder head (11) and the rear cylinder head (12), a relief groove (17) communicating with the receiving cavity (16) on both the front cylinder head (11) and the rear cylinder head (12), the magnetic plate (31) being slidably disposed in the receiving cavity (16), and an oil inlet hole (313) being provided through the magnetic plate (31), and the docking component being disposed between the magnetic plate (31) and the slider (2111).

3. The oil-water separation type cylinder according to claim 2, characterized in that, The collecting component (3) further includes a scraper (32) and a push spring (33). The inner wall of the receiving cavity (16) is provided with a placement groove (161). The magnetic plate (31) is provided with a collecting groove (311). One end of the scraper (32) is slidably connected to the placement groove (161) and the other end extends into the collecting groove (311). The push spring (33) is fixed between the bottom of the placement groove (161) and the scraper (32). The scraper (32) is provided with a guide surface (321).

4. The oil-water separation type cylinder according to claim 2, characterized in that, The docking assembly includes a drive unit (4), a transmission unit (6), and a rotating unit (5). The drive unit (4) includes a drive rack (41), a drive gear (42), and a drive rod (43). The bottom of the slide groove (211) is provided with an installation groove (212). The drive rod (43) is rotatably installed in the installation groove (212), and the drive gear (42) is coaxially sleeved on the drive rod (43). One end of the drive rack (41) is fixed to the slider (2111) and meshes with the drive gear (42), and the other end extends outward through the ring frame (21). The rotating unit (5) is connected to the magnetic plate (31). The transmission unit (6) is disposed between the rotating unit (5) and the drive rod (43).

5. The oil-water separation type cylinder according to claim 4, characterized in that, The rotating part (5) includes: a lead screw (51), a rotating rod (52), a transmission gear (53), and a rotating gear (54). A threaded hole (312) is provided on the magnetic plate (31). One end of the lead screw (51) is rotatably installed in the accommodating cavity (16), and the other end is threadedly connected to the threaded hole (312). The rotating gear (54) is coaxially sleeved on the lead screw (51). The rotating rod (52) is rotatably installed on the front cylinder head (11) and the rear cylinder head (12), with one end extending into the accommodating cavity (16) and coaxially fixed with the transmission gear (53), and the other end penetrating into the mounting groove (212). The transmission gear (53) meshes with the rotating gear (54). The transmission part (6) is disposed between the rotating rod (52) and the drive rod (43).

6. The oil-water separation type cylinder according to claim 5, characterized in that, The transmission part (6) includes: a driving gear (61), a driven gear (62), a transmission rod (63), and a plug rod (64). The driving gear (61) is coaxially sleeved on the driving rod (43). The rotating rod (52) has a plug hole (521). The transmission rod (63) is rotatably installed in the mounting groove (212), and the driven gear (62) is coaxially sleeved on the transmission rod (63). The driving gear (61) meshes with the driven gear (62). One end of the plug rod (64) is fixed to the transmission rod (63), and the other end is set in the plug hole (521).

7. The oil-water separation type cylinder according to claim 1, characterized in that, The pushing assembly (7) includes a push rod (71), a fixed cylinder (72), and a support spring (73). The piston plate (13) has a mounting hole (131). The fixed cylinder (72) is fixed in the mounting hole (131). The push rod (71) extends and retracts in the fixed cylinder (72). The support spring (73) is fixed between the inner wall of the fixed cylinder (72) and the push rod (71).

8. The oil-water separation type cylinder according to claim 7, characterized in that, The pushing assembly (7) further includes a magnetic block (74) fixed to one end of the push rod (71) away from the support spring (73).

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