Hydraulic valve with lubrication function

Abstract

The utility model relates to hydraulic valve technical field, concretely is a kind of hydraulic valve with lubricating function, including valve main body, the inner chamber of valve main body is slidably connected with valve core, the inner chamber of valve main body is also provided with two annular lubricating grooves.The utility model adds the storage of lubricating oil in oil storage cylinder, when needing to lubricate valve core, start electric push rod, the extension end of electric push rod drives connecting plate to rise first and then return to original position, the sealing ball body inside oil storage cylinder is driven by round bar to lift, when sealing ball body leaves the outer end of lower oil pipe, the lubricating oil in oil storage cylinder enters oil delivery channel in lower oil pipe, finally enters annular lubricating groove, in the process of valve core sliding displacement, the lubricating oil in annular lubricating groove can be coated on the surface of valve core, to reduce abrasion, it is favorable to reduce the occurrence of valve core jam, response lag and other problems.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic valve technology, specifically a hydraulic valve with lubrication function. Background Technology

[0002] Hydraulic valves are the core control components of hydraulic systems. They change the opening, closing, cross-sectional area, or flow direction of the internal flow channels through the relative movement of the valve core and valve sleeve, achieving precise control of the pressure, flow rate, and direction of hydraulic oil. Their structure includes a valve core, valve sleeve, valve body, drive mechanism, and seals, and some integrate auxiliary structures such as lubrication and heat dissipation. They are suitable for complex working conditions such as high pressure and high frequency, and are widely used in industrial machinery, construction machinery, and automation equipment to ensure the stable and efficient operation of hydraulic systems.

[0003] Existing hydraulic valves use a precision clearance fit between the valve core and the valve sleeve, but generally lack a targeted lubrication structure. Under high-frequency reciprocating conditions, it is difficult to form a stable oil film by relying solely on the system hydraulic oil, which leads to a significant increase in the resistance of the valve core movement and aggravated friction and wear. This not only easily causes problems such as valve core jamming and response lag, but also greatly shortens the service life of the hydraulic valve, making it difficult to meet the requirements of long-term stable operation of the hydraulic system. Therefore, we propose a hydraulic valve with lubrication function. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic valve with lubrication function to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solutions: A hydraulic valve with lubrication function includes a valve body, a valve core slidably connected to the inner cavity of the valve body, and two annular lubrication grooves located on the circumferential surface of the valve core in the inner cavity of the valve body. An oil delivery channel communicating with the two annular lubrication grooves is provided on the valve body, and an oil storage mechanism is provided at the outer end of each of the two oil delivery channels. The oil storage mechanism includes an electric push rod fixedly connected to the outer wall of the valve body. A connecting plate is fixedly connected to the telescopic end of the electric push rod. A round rod is fixedly connected to the end of the connecting plate away from the electric push rod. A lower oil pipe is fixedly connected to the outer end of the oil delivery channel. A funnel-shaped oil storage cylinder is fixedly connected to the outer end of the lower oil pipe. The circumferential surface of the round rod is slidably connected to the top of the funnel-shaped oil storage cylinder. A sealing ball is fixedly connected to the bottom end of the round rod. The sealing ball is used to seal the outer end of the lower oil pipe. The funnel-shaped oil storage cylinder is made of transparent material and has graduations on its surface; The valve body is fixedly connected to a pressure housing and a mounting housing on its left and right sides, respectively.

[0006] Preferably, the valve body is further provided with an oil drain channel that is connected to two annular lubrication grooves respectively.

[0007] Preferably, the outer ends of both oil drain channels are threaded with lead screws, and the inner ends of both lead screws are rotatably connected with sealing blocks. The two sealing blocks are used to block the inner ends of the two oil drain channels respectively.

[0008] Preferably, the surfaces of the two oil drain channels are provided with limiting grooves, one side of each of the two sealing blocks is slidably connected to the two limiting grooves, and the outer ends of the two lead screws are fixedly connected with handwheels.

[0009] Preferably, one end of the valve core is fixedly connected to a push rod, the push rod is slidably connected inside the pressure housing, and the outer wall of the pressure housing is fixedly connected to a pressure hole.

[0010] Preferably, a threaded rod is threadedly connected to the side of the mounting housing away from the valve body, and a circular plate is rotatably connected to the threaded end of the threaded rod. A limit spring is provided between the circular plate and the valve core, and the two ends of the limit spring are respectively fixedly connected to the circular plate and the valve core.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, through the design of an annular lubrication groove, a sealing ball, and an electric push rod, stores lubricating oil in an oil reservoir. When lubrication of the valve core is required, the electric push rod is activated. The extension and retraction of the electric push rod causes the connecting plate to rise and then return to its original position. The sealing ball inside the oil reservoir is then moved up and down by the round rod. When the sealing ball leaves the top of the lower oil pipe, the lubricating oil in the oil reservoir enters the oil delivery channel through the lower oil pipe and finally enters the annular lubrication groove. During the sliding displacement of the valve core, the lubricating oil in the annular lubrication groove can coat the surface of the valve core, thereby reducing wear and helping to reduce problems such as valve core jamming and response lag, extending its service life, and ensuring the flexibility of valve core movement and the stability of equipment operation.

[0012] 2. This utility model, through the setting of an oil reservoir, scale, and electric push rod, allows for precise setting of the extension and retraction cycle of the electric push rod by observing the scale markings on the surface of the oil reservoir. This enables precise injection of a fixed volume of lubricating oil into the annular lubrication groove, achieving directional lubrication of the valve core and avoiding excessive or insufficient lubrication. This not only improves the reliability of valve core lubrication but also allows the lubricating oil to act directly on the lubrication points, reducing waste and lowering operating costs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 yes Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the oil storage mechanism in this utility model; Figure 5 This is a schematic diagram of the internal structure of the oil storage mechanism in this utility model.

[0014] In the diagram: 1. Valve body; 2. Valve core; 3. Annular lubrication groove; 4. Oil delivery channel; 5. Oil discharge channel; 6. Sealing block; 7. Oil storage mechanism; 71. Electric push rod; 72. Connecting plate; 73. Round rod; 74. Lower oil pipe; 75. Funnel-shaped oil storage cylinder; 76. Sealing ball; 8. Pressure housing; 9. Push rod; 10. Pressure hole; 11. Mounting housing; 12. Threaded rod; 13. Round plate; 14. Limit spring; 15. Lead screw; 16. Handwheel; 17. Limit groove. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] Example like Figures 1-5As shown, a hydraulic valve with lubrication function includes a valve body 1. A valve core 2 is slidably connected to the inner cavity of the valve body 1. Two annular lubrication grooves 3 are formed in the inner cavity of the valve body 1, and both annular lubrication grooves 3 are located on the circumferential surface of the valve core 2. Two oil delivery channels 4 are formed on the valve body 1, and the two oil delivery channels 4 are respectively connected to the two annular lubrication grooves 3. An oil storage mechanism 7 is provided at the outer end of each of the two oil delivery channels 4. The oil storage mechanism 7 includes an electric push rod 71 fixedly connected to the outer wall of the valve body 1. A connecting plate 72 is fixedly connected to the telescopic end of the electric push rod 71. A round rod 73 is fixedly connected to the end of the connecting plate 72 away from the electric push rod 71. A lower oil pipe 74 is fixedly connected to the outer end of the oil delivery channel 4. A funnel-shaped oil storage cylinder 75 is fixedly connected to the outer end of the lower oil pipe 74. The circumferential surface of the round rod 73 is slidably connected to the top of the funnel-shaped oil storage cylinder 75. A sealing ball 76 is fixedly connected to the bottom end of the round rod 73. The sealing ball 76 is used to seal the outer end of the lower oil pipe 74.

[0017] The aforementioned funnel-shaped oil reservoir 75 is made of transparent material and has graduations on its surface. A pressure housing 8 and a mounting housing 11 are fixedly connected to the left and right sides of the valve body 1, respectively. A push rod 9 is fixedly connected to one end of the valve core 2. The push rod 9 is slidably connected inside the pressure housing 8. A pressure hole 10 is fixedly connected to the top of the pressure housing 8. A threaded rod 12 is threadedly connected to the side of the mounting housing 11 away from the valve body 1. A circular plate 13 is rotatably connected to the threaded end of the threaded rod 12. A limit spring 14 is provided between the circular plate 13 and the valve core 2. The two ends of the limit spring 14 are fixedly connected to the circular plate 13 and the valve core 2, respectively.

[0018] In specific implementation, lubricating oil is stored in the funnel-shaped oil reservoir 75. When it is necessary to add lubricating oil to the valve core 2, the electric push rod 71 is activated. The extension and retraction end of the electric push rod 71 moves to move the connecting plate 72 up and then back to its original position. The round rod 73 can drive the sealing ball 76 inside the funnel-shaped oil reservoir 75 to move up and down. When the sealing ball 76 leaves the top of the lower oil pipe 74, the lubricating oil in the funnel-shaped oil reservoir 75 enters the oil delivery channel 4 through the lower oil pipe 74 and finally enters the annular lubrication groove 3. During the sliding displacement of valve core 2, the lubricating oil in the annular lubrication groove 3 can be coated on the surface of valve core 2, thereby reducing wear, extending its service life, and ensuring the flexibility of valve core 2 and the stability of equipment operation. By observing the scale markings on the surface of the funnel-shaped oil reservoir 75, the extension and retraction cycle of the electric push rod 71 can be precisely set, allowing a fixed volume of lubricating oil to be precisely injected into the annular lubrication groove 3. This achieves directional lubrication of the valve core 2, avoiding excessive or insufficient lubricating oil addition. This not only improves the reliability of lubrication of the valve core 2, but also allows the lubricating oil to act directly on the lubrication parts to reduce waste and lower operating costs. Pressurized oil is added into the pressurized housing 8 through the pressurization port 10, thereby pushing the push rod 9 to move and causing the valve core 2 to slide.

[0019] As a technical optimization of this utility model, the outer ends of the two oil drain channels 5 are threaded with lead screws 15, and the inner ends of the two lead screws 15 are rotatably connected with sealing blocks 6. The two sealing blocks 6 are used to block the inner ends of the two oil drain channels 5 respectively. The surfaces of the two oil drain channels 5 are provided with limit grooves 17. One side of the two sealing blocks 6 is slidably connected in the two limit grooves 17 respectively. The outer ends of the two lead screws 15 are fixedly connected with handwheels 16.

[0020] In practice, when the valve core 2 is idle and does not require lubrication, the sealing block 6 is moved down by turning the handwheel 16. The lubricating oil remaining in the annular lubrication groove 3 can be quickly discharged through the oil drain channel 5. This can clear the residual oil in the lubrication groove in time, avoid the lubricating oil from becoming viscous or leaking due to long-term idleness, and prevent the valve core 2 from getting stuck or corroded due to residual oil accumulation. This not only ensures the cleanliness of the components, but also extends the overall service life of the device.

[0021] In use, this utility model connects the hydraulic valve to an external pipeline and stores lubricating oil in a funnel-shaped oil reservoir 75. When lubrication of the valve core 2 is required, the electric push rod 71 is activated. The extension end of the electric push rod 71 drives the connecting plate 72 to rise and then return to its original position. The round rod 73 drives the sealing ball 76 to move up and down inside the funnel-shaped oil reservoir 75. When the sealing ball 76 leaves the outer end of the lower oil pipe 74, the lubricating oil in the funnel-shaped oil reservoir 75 enters the oil delivery channel 4 through the lower oil pipe 74 and finally enters the annular lubrication groove 3. Simultaneously, pressurized oil enters the pressurized housing 8 through the pressurized hole 10, thereby pushing the push rod 9 to move and causing the valve core 2 to slide. During the sliding movement of the valve core 2, the lubricating oil in the annular lubrication groove 3 is coated on the surface of the valve core 2, thereby reducing wear, extending its service life, and ensuring the flexibility of the valve core 2's movement and the stability of the equipment operation. When the valve core 2 is idle and does not require lubrication, the sealing block 6 is moved down by turning the handwheel 16, and the residual lubricating oil in the annular lubrication groove 3 can be quickly discharged through the oil drain channel 5, which can promptly empty the residual oil in the annular lubrication groove 3.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A hydraulic valve with lubrication function, comprising a valve body (1), wherein a valve core (2) is slidably connected to the inner cavity of the valve body (1), characterized in that, The valve body (1) has two annular lubrication grooves (3) located on the circumferential surface of the valve core (2) in its inner cavity. The valve body (1) has oil delivery channels (4) that are respectively connected to the two annular lubrication grooves (3). The outer ends of the two oil delivery channels (4) are provided with oil storage mechanisms (7). The oil storage mechanism (7) includes an electric push rod (71) fixedly connected to the outer wall of the valve body (1). The telescopic end of the electric push rod (71) is fixedly connected to a connecting plate (72). The end of the connecting plate (72) away from the electric push rod (71) is fixedly connected to a round rod (73). The outer end of the oil delivery channel (4) is fixedly connected to a lower oil pipe (74). The outer end of the lower oil pipe (74) is fixedly connected to a funnel-shaped oil storage cylinder (75). The circumferential surface of the round rod (73) is slidably connected to the top of the funnel-shaped oil storage cylinder (75). The bottom end of the round rod (73) is fixedly connected to a sealing ball (76). The sealing ball (76) is used to seal the outer end of the lower oil pipe (74). The funnel-shaped oil storage cylinder (75) is made of transparent material and has graduations on its surface; The valve body (1) is fixedly connected to a pressure housing (8) and a mounting housing (11) on its left and right sides, respectively.

2. A hydraulic valve with lubrication function according to claim 1, characterized in that, The valve body (1) is also provided with an oil drain channel (5) that is connected to two annular lubrication grooves (3).

3. A hydraulic valve with lubrication function according to claim 2, characterized in that, The outer ends of the two oil drain channels (5) are threaded with screw rods (15), and the inner ends of the two screw rods (15) are rotatably connected with sealing blocks (6). The two sealing blocks (6) are used to block the inner ends of the two oil drain channels (5).

4. A hydraulic valve with lubrication function according to claim 3, characterized in that, Limiting grooves (17) are provided on the surfaces of the two oil drain channels (5), and one side of the two sealing blocks (6) is slidably connected in the two limiting grooves (17). Handwheels (16) are fixedly connected to the outer ends of the two lead screws (15).

5. A hydraulic valve with lubrication function according to claim 1, characterized in that, One end of the valve core (2) is fixedly connected to a push rod (9), which is slidably connected inside the pressure housing (8). The outer wall of the pressure housing (8) is fixedly connected to a pressure hole (10).

6. A hydraulic valve with lubrication function according to claim 5, characterized in that, The mounting housing (11) is threaded with a threaded rod (12) on the side away from the valve body (1). The threaded end of the threaded rod (12) is rotatably connected to a circular plate (13). A limit spring (14) is provided between the circular plate (13) and the valve core (2). The two ends of the limit spring (14) are fixedly connected to the circular plate (13) and the valve core (2), respectively.

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