A hydraulic cylinder with internal self-cleaning filtration

Abstract

This utility model provides a hydraulic cylinder with internal self-cleaning filtration, including a cylinder body, a piston rod, a mounting bracket, and a cleaning assembly. The surface of the mounting bracket is fixedly connected to one side of the cylinder body. One end of the piston rod passes through the mounting bracket and the cylinder body sequentially and extends into the interior of the cylinder body. A working piston is fixedly connected to the end of the piston rod located inside the cylinder body. A connecting support rod is fixedly connected to the surface of the mounting bracket. A mounting sleeve is fitted onto the surface of one end of the connecting support rod. A connecting rod is fixedly connected to the surface of the mounting sleeve. A return box is fixedly connected to the surface of the mounting sleeve via the connecting rod. The inner wall of the return box is concave. A return pipe is connected to the bottom of the return box. The bottom end of the return pipe is connected to the surface of the cylinder body. By setting up the cleaning assembly, the entire system achieves the function of filtering hydraulic oil, avoiding affecting the normal operation of the hydraulic cylinder and ensuring the efficiency of the hydraulic cylinder.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to a hydraulic cylinder with internal self-cleaning filtration. Background Technology

[0002] A hydraulic cylinder is an actuator that converts hydraulic energy into mechanical energy. It is widely used in various engineering machinery and industrial equipment. It mainly consists of a cylinder body, piston, piston rod, seals, and connecting parts. The cylinder body and piston form a closed space in which hydraulic oil flows. By controlling the entry and exit of the hydraulic oil, the piston is driven to reciprocate, thereby driving the movement of the mechanical device.

[0003] Chinese patent CN217462720U discloses a hydraulic cylinder, relating to the field of hydraulic cylinder technology. The hydraulic cylinder body has a mounting base on its bottom surface, a fixing block fixedly mounted on the surface of the mounting base, a bidirectional lead screw rotatably connected to one side of the mounting base, a threaded block rotatably mounted on the surface of the bidirectional lead screw, a connecting block mounted on one side of the threaded block, and a limit bar fixedly mounted on one side of the connecting block. Limit holes are provided on both sides of the hydraulic cylinder body near the bottom surface. In actual use, by configuring the hydraulic cylinder body, mounting base, fixing block, bidirectional lead screw, threaded block, connecting block, limit bar, and limit holes, the limit bar can move between the hydraulic cylinder bodies by rotating the bidirectional lead screw, thus facilitating the disassembly and assembly of the hydraulic cylinder body. This improves the efficiency of disassembly and assembly, is simple and convenient to operate, and is beneficial for practical use.

[0004] As mentioned above, the patent provides a hydraulic cylinder that allows for easy separation of the cylinder body from the mounting base, improving the efficiency of cylinder body disassembly and assembly. It is simple and convenient to operate and is suitable for practical use. However, during use, the internal hydraulic oil will accumulate impurities as it is used. If these impurities are not addressed in time, they will affect the subsequent use of the hydraulic cylinder and reduce its working efficiency. Utility Model Content

[0005] This invention provides a hydraulic cylinder with internal self-cleaning filtration to solve the problems mentioned in the background art.

[0006] To address the aforementioned problems, this utility model provides a hydraulic cylinder with internal self-cleaning filtration, comprising a cylinder body, a piston rod, a mounting bracket, and a cleaning assembly. The surface of the mounting bracket is fixedly connected to one side of the cylinder body. One end of the piston rod passes through the mounting bracket and the cylinder body sequentially, extending into the interior of the cylinder body. A working piston is fixedly connected to the end of the piston rod located inside the cylinder body. A connecting support rod is fixedly connected to the surface of the mounting bracket. A mounting sleeve is fitted onto the surface of one end of the connecting support rod. A connecting rod is fixedly connected to the surface of the mounting sleeve. The surface of the mounting sleeve is fixed by the connecting rod. A return box is connected; the inner wall of the return box is concave; the bottom of the return box is connected to a return pipe; the bottom end of the return pipe is connected to the surface of the cylinder body; a threaded clamp is threadedly connected to the top of the return box; one end of the threaded clamp passes through the return box and extends to the bottom end of the inner wall of the return pipe; a sealing piston is fixedly connected to the end of the threaded clamp located at the bottom end of the inner wall of the return pipe; a drain pipe is connected to the bottom of one side of the surface of the return pipe; a filter chamber is threadedly connected to one end of the drain pipe; a filter chuck is snapped into the inside of the filter chamber; a sealing cap is threadedly connected to the surface of the filter chamber.

[0007] Preferably, the number of mounting brackets is set to two, and the two mounting brackets are symmetrically arranged on both sides of the cylinder body; the number of connecting struts is set to four, and the four connecting struts are evenly arranged on the circumference of the cylinder body surface; one end of the four connecting struts is fixedly connected to the surface of one of the mounting brackets; the other end of the four connecting struts passes through the other mounting bracket and extends to one side of the mounting bracket.

[0008] Preferably: a sealing connection support plate is slidably connected to the surface of the piston rod; the surface of the sealing connection support plate is fixedly connected to the surface of the mounting bracket; the surface of the piston rod is slidably connected to the surface of the mounting bracket; and a mounting bracket is fixedly connected to the end of the piston rod away from the cylinder body.

[0009] Preferably, one end of the reflux pipe passes through the reflux box and the cylinder body in sequence and extends into the interior of the cylinder body; the number of reflux pipes and drain pipes is set to two, and the two reflux pipes and drain pipes are symmetrically arranged on both sides of the reflux box.

[0010] Preferably: the top end of the threaded clamp is fixedly connected to an adjusting spline; both sides of the mounting sleeve are provided with fixing nuts; the inner side of the fixing nut is threadedly connected to the surface of the connecting support rod; and the side of the mounting seat away from the piston rod is threadedly connected to a sealing mounting cover.

[0011] The beneficial effects of adopting the above technical solutions are:

[0012] By setting up a cleaning component, when cleaning is required, the threaded clamp is rotated, causing the sealing piston to be pulled out of the return pipe. Then, the piston rod moves, driving the working piston to discharge hydraulic oil from the cylinder body. The hydraulic oil then flows into the return box through the return pipe. The return box is concave, so that some hydraulic oil flows into the concave area first, trapping some impurities. Simultaneously, some hydraulic oil flows into the drain pipe and into the filter chamber, where the filter chuck filters this portion of hydraulic oil, removing impurities. Finally, the filtered hydraulic oil is collected for continued use. This system effectively filters the hydraulic oil, preventing interference with the normal operation of the hydraulic cylinder and ensuring its efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0015] Figure 3 This is a schematic diagram of the connection structure of the reflux box of this utility model.

[0016] Figure 4 This is a schematic cross-sectional view of the reflux box structure of this utility model.

[0017] The components are: 1. Cylinder body; 2. Piston rod; 3. Mounting bracket; 4. Working piston; 5. Connecting support rod; 6. Mounting sleeve; 7. Connecting rod; 8. Return box; 9. Return pipe; 10. Threaded rod; 11. Sealing piston; 12. Drain pipe; 13. Filter chamber; 14. Filter chuck; 15. Sealing cover; 16. Sealing connecting support plate; 17. Mounting bracket; 18. Adjusting spline; 19. Fixing nut; 20. Sealing mounting cover. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0019] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, a movable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] like Figure 1 - Figure 4 As shown, in this embodiment, a hydraulic cylinder with internal self-cleaning filtration includes a cylinder body 1, a piston rod 2, a mounting bracket 3, and a cleaning assembly. The surface of the mounting bracket 3 is fixedly connected to one side of the cylinder body 1. One end of the piston rod 2 passes through the mounting bracket 3 and the cylinder body 1 sequentially and extends into the interior of the cylinder body 1. A working piston 4 is fixedly connected to one end of the piston rod 2 located inside the cylinder body 1. A connecting support rod 5 is fixedly connected to the surface of the mounting bracket 3. A mounting sleeve 6 is fitted onto the surface of one end of the connecting support rod 5. A connecting rod 7 is fixedly connected to the surface of the mounting sleeve 6. A return box 8 is fixedly connected to the surface of the mounting sleeve 6 via the connecting rod 7. The inner wall of the reflux box 8 is concave; the bottom of the reflux box 8 is connected to a reflux pipe 9; the bottom end of the reflux pipe 9 is connected to the surface of the cylinder body 1; the top of the reflux box 8 is threadedly connected to a threaded clamp rod 10; one end of the threaded clamp rod 10 passes through the reflux box 8 and extends to the bottom end of the inner wall of the reflux pipe 9; a sealing piston 11 is fixedly connected to the end of the threaded clamp rod 10 located at the bottom end of the inner wall of the reflux pipe 9; a drain pipe 12 is connected to the bottom of one side of the surface of the reflux pipe 9; a filter chamber 13 is threadedly connected to one end of the drain pipe 12; a filter chuck 14 is snapped into the inside of the filter chamber 13; a sealing cap 15 is threadedly connected to the surface of the filter chamber 13.

[0022] Through the above technical solution, the piston rod 2 slides inside the cylinder body 1. The mounting bracket 3 is fixed on both sides of the cylinder body 1. The working piston 4 is fixed at one end of the piston rod 2 located inside the cylinder body 1, which can drive the piston rod 2 to slide, thereby realizing the transmission of mechanical energy. The mounting sleeve 6 is sleeved on the connecting support rod 5. The connecting support rod 5 is fixed on the surface of the mounting bracket 3, and the connecting rod 7 is fixed on the surface of the mounting sleeve. The connecting rod 7 fixes and supports the return box 8. The return pipe 9 is set at the bottom of the return pipe 9. A threaded rod 10 is threadedly connected to the top of the return box 8. The threaded rod 10 rotates along the thread of the return box 8, which can drive the sealing piston 11 into the bottom end of the inner wall of the return pipe 9. The sealing piston 11 seals the inside of the cylinder body 1 to ensure the normal operation of the cylinder body 1. When cleaning is required, the threaded rod 10 is screwed... The piston rotates, causing the sealing piston 11 to be pulled out of the return pipe 9. Then, the piston rod 2 works, driving the working piston 4 to move, thereby discharging the hydraulic oil from the cylinder body 1. The hydraulic oil then flows into the return box 8 through the return pipe 9. The return box 8 is designed to be concave, so that after the hydraulic oil flows into the return box 8, some of the hydraulic oil will first flow into the concave part, where some impurities will be retained. At the same time, some hydraulic oil will flow into the drain pipe 12 and enter the filter chamber 13 along the drain pipe 12. The filter chuck 14 inside the filter chamber 13 filters this part of the hydraulic oil, thereby removing impurities. Finally, the filtered hydraulic oil is collected for continued use. The whole process achieves the function of filtering hydraulic oil, avoiding affecting the normal operation of the hydraulic cylinder and ensuring the efficiency of the hydraulic cylinder.

[0023] like Figure 1 and Figure 2 As shown, the number of mounting brackets 3 is set to two, and the two mounting brackets 3 are symmetrically arranged on both sides of the cylinder body 1; the number of connecting support rods 5 is set to four, and the four connecting support rods 5 are evenly arranged around the circumference of the surface of the cylinder body 1; one end of the four connecting support rods 5 is fixedly connected to the surface of one of the mounting brackets 3; the other end of the four connecting support rods 5 passes through the other mounting bracket 3 and extends to one side of the mounting bracket 3; a sealing connecting support plate 16 is slidably connected to the surface of the piston rod 2; the surface of the sealing connecting support plate 16 is fixedly connected to the surface of the mounting bracket 3; the surface of the piston rod 2 is slidably connected to the surface of the mounting bracket 3; a mounting bracket 17 is fixedly connected to the end of the piston rod 2 away from the cylinder body 1.

[0024] Through the above technical solution, two mounting brackets 3 are set up and symmetrically arranged on both sides of the cylinder body 1. One end of the connecting support rod 5 is fixed to one of the mounting brackets 3, while the other end of the connecting support rod 5 passes through the other mounting bracket 3 and extends to one side of the mounting bracket 3, thereby fully fixing the two mounting brackets 3 to both sides of the cylinder body 1 to ensure the stability of the cylinder body 1 during operation. The sealing connecting support plate 16 is sleeved on the surface of the piston rod 2 and fixed to the surface of one of the mounting brackets 3, thereby sealing the cylinder body 1 and the mounting bracket 3 when the piston rod 2 slides, preventing liquid or air leakage during operation. The mounting bracket 17 fixes one end of the piston rod 2 and is used to connect other working parts.

[0025] like Figure 2 - Figure 4 As shown, one end of the return pipe 9 passes through the return box 8 and the cylinder 1 in sequence and extends into the interior of the cylinder 1; the number of the return pipe 9 and the drain pipe 12 is set to two, and the two return pipes 9 and drain pipes 12 are symmetrically arranged on both sides of the return box 8; the top end of the threaded clamp rod 10 is fixedly connected to an adjusting spline 18; both sides of the mounting sleeve 6 are provided with fixing nuts 19; the inner side of the fixing nut is threadedly connected to the surface of the connecting support rod 5; the side of the mounting seat 3 away from the piston rod 2 is threadedly connected to a sealing mounting cover 20.

[0026] Through the above technical solution, the return pipe 9 extends into the interior of the cylinder body 1, and two return pipes 9 and a drain pipe 12 are set to increase the flow space of hydraulic oil, thereby improving the cleaning efficiency. The adjusting spline 18 is fixed to the top of the threaded clamp rod 10, and the adjusting spline 18 can drive the threaded clamp rod 10 to rotate. The fixing nut 19 is set on both sides of the mounting sleeve 6. The fixing nut 19 is threadedly connected to the surface of the connecting support rod 5, and the mounting sleeve 6 is fixed to the surface of the connecting support rod 5 by the fixing nut 19. The mounting cover 20 is threadedly connected to the mounting seat 3 fixed at one end of the connecting support rod 5. The sealing mounting cover 20 seals the interior of the cylinder body 1 during operation, and also facilitates the addition of hydraulic oil to ensure the normal operation of the cylinder body 1.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate this utility model, and not to limit the technical solutions described in this utility model. Therefore, although this specification has described this utility model in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model, and all technical solutions and improvements that do not depart from the spirit and scope of this utility model should be covered within the scope of the claims of this utility model; technologies not described in detail in this utility model are implemented with existing technology.

Claims

1. A self-cleaning filterable hydraulic cylinder internally, comprising a cylinder body (1), a piston rod (2), a mounting bracket (3) and a cleaning assembly, characterized in that: The surface of the mounting bracket (3) is fixedly connected to one side of the cylinder body (1); one end of the piston rod (2) passes through the mounting bracket (3) and the cylinder body (1) in sequence and extends into the interior of the cylinder body (1); a working piston (4) is fixedly connected to one end of the piston rod (2) located inside the cylinder body (1); a connecting support rod (5) is fixedly connected to the surface of the mounting bracket (3); a mounting sleeve (6) is sleeved on the surface of one end of the connecting support rod (5); a connecting rod (7) is fixedly connected to the surface of the mounting sleeve (6); a return box (8) is fixedly connected to the surface of the mounting sleeve (6) through the connecting rod (7); the inner wall of the return box (8) is set to be concave; the return box (8) The bottom is connected to a return pipe (9); the bottom end of the return pipe (9) is connected to the surface of the cylinder (1); the top of the return box (8) is threadedly connected to a threaded rod (10); one end of the threaded rod (10) passes through the return box (8) and extends to the bottom end of the inner wall of the return pipe (9); the end of the threaded rod (10) located at the bottom end of the inner wall of the return pipe (9) is fixedly connected to a sealing piston (11); the bottom of one side of the surface of the return pipe (9) is connected to a drain pipe (12); one end of the drain pipe (12) is threadedly connected to a filter chamber (13); the inside of the filter chamber (13) is fitted with a filter chuck (14); the surface of the filter chamber (13) is threadedly connected to a sealing cap (15).

2. A self-cleaning, internally filtered hydraulic cylinder according to claim 1, characterized in that: The number of mounting brackets (3) is set to two, and the two mounting brackets (3) are symmetrically arranged on both sides of the cylinder body (1); the number of connecting struts (5) is set to four, and the four connecting struts (5) are evenly arranged on the circumference of the surface of the cylinder body (1); One end of each of the four connecting struts (5) is fixedly connected to the surface of one of the mounting brackets (3); the other end of each of the four connecting struts (5) passes through another mounting bracket (3) and extends to one side of the mounting bracket (3).

3. A self-cleaning, internally filtered hydraulic cylinder as defined in claim 1, wherein: The piston rod (2) is slidably connected to a sealing connection support plate (16); the surface of the sealing connection support plate (16) is fixedly connected to the surface of the mounting bracket (3); the surface of the piston rod (2) is slidably connected to the surface of the mounting bracket (3); and a mounting bracket (17) is fixedly connected to one end of the piston rod (2) away from the cylinder (1).

4. A self-cleaning, internally filtered hydraulic cylinder as defined in claim 1, wherein: One end of the return pipe (9) passes through the return box (8) and the cylinder (1) in sequence and extends into the interior of the cylinder (1); the number of the return pipe (9) and the drain pipe (12) is set to two, and the two return pipes (9) and drain pipes (12) are symmetrically arranged on both sides of the return box (8).

5. A hydraulic cylinder with internal self-cleaning filtration according to claim 1, characterized in that: The top of the threaded rod (10) is fixedly connected to an adjusting spline (18); both sides of the mounting sleeve (6) are provided with fixing nuts (19); the inner side of the fixing nut (19) is threadedly connected to the surface of the connecting support rod (5); the mounting base (3) away from the piston rod (2) is threadedly connected to a sealing mounting cover (20).

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