Valve core of hydraulic valve

Abstract

The utility model relates to the technical field of hydraulic valves, and discloses a hydraulic valve element which comprises a hydraulic valve body, the top end of the hydraulic valve body is fixedly connected with an oil inlet pipe, and the bottom end of the hydraulic valve body is fixedly connected with an oil outlet pipe. A worker starts an air cylinder, the air cylinder pushes a triangular inclined block to move, the triangular inclined block drives a hollowed-out inclined block to move, a cylinder is pushed to move through bounce of a second spring, the cylinder drives the surface of an arc-shaped scraping block to be better attached to the inner wall of the hydraulic valve body, and at the moment, the worker repeatedly pulls a pull rod; a pull rod drives a special-shaped round block to move in an inner cavity of the hydraulic valve body, an arc-shaped scraping block scrapes hydraulic oil on the inner wall of the hydraulic valve body, the hydraulic oil is discharged through an oil outlet pipe, and workers can conveniently scrape and clean the hydraulic oil in the inner cavity of the hydraulic valve body; and unnecessary economic loss caused by damage to the valve core due to long-term retention of hydraulic oil in the inner cavity of the hydraulic valve body is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic valves, in particular to a hydraulic valve spool. Background Art

[0002] A hydraulic valve is an automated component operated by pressure oil. It is controlled by the pressure oil of a distributing valve and is usually used in combination with an electromagnetic distributing valve. It can be used to remotely control the opening and closing of the oil, gas, and water pipeline systems of a hydropower station and is commonly used in oil circuits such as clamping, control, and lubrication. There are direct-acting and pilot-operated types, with the pilot-operated type being more commonly used.

[0003] Chinese Patent discloses a hydraulic valve spool with the authorization announcement number CN219932592U. When the electromagnetic coil loses power, the external long rod can be inserted into the sliding grooves at both ends of the valve body, and the long rod is used to push the sliding plate to move inside the sliding groove, so that the sliding plate drives the spool body to move inside the oil storage cavity through the transmission rod, so that the valve body can still work when the electromagnetic coil loses power.

[0004] Regarding the above and existing related technologies, the inventor believes that the following defects often exist: after the existing hydraulic valve spool is used, a certain amount of hydraulic oil will remain in the inner cavity of the hydraulic valve, and the existing hydraulic valve spool may not be able to scrape and clean the residual hydraulic oil in the inner cavity of the hydraulic valve. In view of the above defects, the hydraulic valve spool is improved to facilitate scraping and cleaning of the hydraulic oil in the inner cavity of the hydraulic valve body, prevent the hydraulic oil from staying in the inner cavity of the hydraulic valve body for a long time and causing damage to the spool, and cause unnecessary economic losses. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is that there is a defect in the prior art that the residual hydraulic oil in the inner cavity of the hydraulic valve may not be scraped and cleaned. For this reason, we propose a hydraulic valve spool.

[0006] To achieve the above object, the present application adopts the following technical solutions: A hydraulic valve spool includes a hydraulic valve body. A feed pipe is fixedly connected to the top end of the hydraulic valve body, and a discharge pipe is fixedly connected to the bottom end of the hydraulic valve body. An irregular circular block is slidably connected to the inner cavity of the hydraulic valve body. A pull rod is fixedly connected to one end of the irregular circular block. A hollowed-out groove is formed inside the hydraulic valve body. A connecting rod is slidably connected to the inner cavity of the hollowed-out groove. One end of the connecting rod close to the irregular circular block is fixedly connected to the irregular circular block. A notch is formed inside the hydraulic valve body. A hollowed-out block is slidably connected to the inner cavity of the notch. One end of the hollowed-out block close to the irregular circular block is fixedly connected to the irregular circular block. An opening groove is formed on the surface of the irregular circular block. A cylinder is fixedly connected to the inner cavity of the irregular circular block. The output end of the cylinder is fixedly connected to a triangular inclined block. A hollowed-out inclined block is slidably connected to the surface of the triangular inclined block. A circular groove is formed inside the hollowed-out inclined block. A cylinder is slidably connected to the inner cavity of the circular groove.

[0007] Preferably, a first spring is fixedly connected to the inner cavity of the hydraulic valve body. One end of the first spring close to the irregular circular block is fixedly connected to the irregular circular block.

[0008] Preferably, a sliding rod is fixedly connected to the inner cavity of the notch. The surface of the sliding rod is slidably connected to the inner cavity of the hollowed-out block.

[0009] Preferably, a first sliding groove is formed inside the irregular circular block. A first slider is slidably connected to the inner cavity of the first sliding groove. One end of the first slider close to the hollowed-out inclined block is fixedly connected to the hollowed-out inclined block.

[0010] Preferably, a second spring is fixedly connected to the inner cavity of the circular groove. One end of the second spring close to the cylinder is fixedly connected to the cylinder.

[0011] Preferably, an arc-shaped scraping block is fixedly connected to one end of the cylinder. The surface of the arc-shaped scraping block is slidably connected to the inner cavity of the opening groove.

[0012] Preferably, the arc-shaped scraping block is in the shape of a semi-circular arc, and the surface of the arc-shaped scraping block fits the inner cavity of the hydraulic valve body.

[0013] The technical effects and advantages of the present utility model:

[0014] In the present utility model, as the staff activates the cylinder, the cylinder pushes the triangular inclined block to displace, the triangular inclined block drives the hollow inclined block to displace, the rebound force of the second spring pushes the cylinder to displace, so that the surface of the cylinder drives the arc-shaped scraping block to fit more closely to the inner wall of the hydraulic valve body. At this time, the staff repeatedly pulls the pull rod, the pull rod drives the special-shaped circular block to displace in the inner cavity of the hydraulic valve body, the arc-shaped scraping block scrapes the hydraulic oil on the inner wall of the hydraulic valve body, and discharges it through the oil outlet pipe. Through the setting of the above structure, it is convenient for the staff to scrape and clean the hydraulic oil in the inner cavity of the hydraulic valve body, prevent the hydraulic oil from staying in the inner cavity of the hydraulic valve body for a long time and causing damage to the valve core, and cause unnecessary economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view structural schematic diagram of the present utility model;

[0016] Figure 2 is the top view structural sectional view of the present utility model;

[0017] Figure 3 For the present utility model Figure 2 is the partial enlarged view at A in;

[0018] Figure 4 is the internal structural sectional view of the present utility model;

[0019] Figure 5 For the present utility model Figure 4 is the partial enlarged view at B in.

[0020] Legend: 1. Hydraulic valve body; 2. Inlet oil pipe; 3. Outlet oil pipe; 4. Special-shaped circular block; 5. Pull rod; 6. Hollow groove; 7. Connecting rod; 8. Notch; 9. Hollow block; 10. Open slot; 11. Cylinder; 12. Triangular inclined block; 13. Hollow inclined block; 14. Circular groove; 15. Circular block; 16. First spring; 17. Slide bar; 18. First chute; 19. First slider; 20. Second spring; 21. Arc-shaped scraping block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Now, the present utility model will be further described in detail with reference to the accompanying drawings and preferred embodiments. These drawings are all simplified schematic diagrams, only showing the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0022] Refer to Figure 1 - Figure 5As shown in the figure, the utility model provides a technical solution: a hydraulic valve spool, which includes a hydraulic valve body 1. A fuel inlet pipe 2 is fixedly connected to the top end of the hydraulic valve body 1, and an oil outlet pipe 3 is fixedly connected to the bottom end of the hydraulic valve body 1. An irregular round block 4 is slidably connected to the inner cavity of the hydraulic valve body 1. One end of the irregular round block 4 is fixedly connected to a pull rod 5. A hollow groove 6 is formed inside the hydraulic valve body 1. A connecting rod 7 is slidably connected to the inner cavity of the hollow groove 6. One end of the connecting rod 7 close to the irregular round block 4 is fixedly connected to the irregular round block 4. A notch 8 is formed inside the hydraulic valve body 1. A hollow block 9 is slidably connected to the inner cavity of the notch 8. One end of the hollow block 9 close to the irregular round block 4 is fixedly connected to the irregular round block 4. An opening groove 10 is formed on the surface of the irregular round block 4. A cylinder 11 is fixedly connected to the inner cavity of the irregular round block 4. The output end of the cylinder 11 is fixedly connected to a triangular inclined block 12. A hollow inclined block 13 is slidably connected to the surface of the triangular inclined block 12. A circular groove 14 is formed inside the hollow inclined block 13. A cylinder 15 is slidably connected to the inner cavity of the circular groove 14. When the staff needs to scrape and clean the hydraulic oil in the inner cavity of the hydraulic valve body 1, as the staff starts the cylinder 11, the cylinder 11 pushes the triangular inclined block 12 to move, so that the triangular inclined block 12 pushes the surface of the hollow inclined block 13 to move in the inner cavity of the irregular round block 4. With the movement of the hollow inclined block 13, by arranging a second spring 20 in the inner cavity of the circular groove 14, the rebounding force of the second spring 20 pushes the cylinder 15 to move, so that the cylinder 15 makes the surface of the arc-shaped scraping block 21 fit more closely to the inner wall of the hydraulic valve body 1. At this time, the staff repeatedly pulls the pull rod 5, so that the pull rod 5 drives the irregular round block 4 to move in the inner cavity of the hydraulic valve body 1. With the movement of the irregular round block 4, the irregular round block 4 drives the first spring 16 to stretch and store energy, and at the same time, the irregular round block 4 drives the hollow block 9 to move, so that the inner cavity of the hollow block 9 slides on the surface of the sliding rod 17. At this time, the arc-shaped scraping block 21 scrapes the hydraulic oil on the inner wall of the hydraulic valve body 1 and discharges it through the oil outlet pipe 3. Through the setting of the above structure, it is convenient for the staff to scrape and clean the hydraulic oil in the inner cavity of the hydraulic valve body 1, preventing the hydraulic oil from staying in the inner cavity of the hydraulic valve body 1 for a long time and causing damage to the spool, resulting in unnecessary economic losses.

[0023] Referring to Figure 2 , Figure 3 and Figure 4 As shown in the figure, in this implementation scheme: a first spring 16 is fixedly connected to the inner cavity of the hydraulic valve body 1. One end of the first spring 16 close to the irregular round block 4 is fixedly connected to the irregular round block 4. Through the setting of the first spring 16, the rebounding force of the first spring 16 continuously stretches the irregular round block 4 to reset, so that the structure returns to the initial position, which is convenient for the staff to operate next time.

[0024] Referring to Figure 3As shown in the figure, in this embodiment: A slide bar 17 is fixedly connected to the inner cavity of the notch 8. The surface of the slide bar 17 is slidably connected to the inner cavity of the hollowed-out block 9. The staff pulls the pull rod 5, causing the pull rod 5 to drive the special-shaped round block 4 to displace, and the special-shaped round block 4 drives the inner cavity of the hollowed-out block 9 to slide on the surface of the slide bar 17. Through the setting of the slide bar 17, when the special-shaped round block 4 displaces, it maintains a directional displacement, ensuring the stability of the special-shaped round block 4 during the movement.

[0025] Refer to Figure 5 As shown in the figure, in this embodiment: A first chute 18 is opened inside the special-shaped round block 4. A first slider 19 is slidably connected to the inner cavity of the first chute 18. One end of the first slider 19 close to the hollowed-out inclined block 13 is fixedly connected to the hollowed-out inclined block 13. As the staff starts the air cylinder 11, the triangular inclined block 12 pushes the hollowed-out inclined block 13 to displace, and the hollowed-out inclined block 13 drives the surface of the first slider 19 to slide in the inner cavity of the first chute 18. Through the setting of the above structure, when the hollowed-out inclined block 13 displaces, it maintains a directional displacement, preventing the hollowed-out inclined block 13 from shaking and affecting the movement of the arc-shaped scraping block 21.

[0026] Refer to Figure 5 As shown in the figure, in this embodiment: A second spring 20 is fixedly connected to the inner cavity of the circular groove 14. One end of the second spring 20 close to the cylinder 15 is fixedly connected to the cylinder 15. Through the setting of the second spring 20, the rebounding force of the second spring 20 continuously pushes the cylinder 15 to displace outward, causing the cylinder 15 to push the arc-shaped scraping block 21 to fit more closely to the inner wall of the hydraulic valve body 1, improving the cleaning effect.

[0027] Refer to Figure 5 As shown in the figure, in this embodiment: One end of the cylinder 15 is fixedly connected to an arc-shaped scraping block 21. The surface of the arc-shaped scraping block 21 is slidably connected to the inner cavity of the opening groove 10. The material on the surface of the arc-shaped scraping block 21 is rubber, improving the sealing effect. At the same time, by opening the opening groove 10 on the surface of the hollowed-out block 9, when the arc-shaped scraping block 21 contracts, it will not get stuck with the hollowed-out block 9.

[0028] Refer to Figure 5 As shown in the figure, in this embodiment: The shape of the arc-shaped scraping block 21 is semi-circular, and the surface of the arc-shaped scraping block 21 fits the inner cavity of the hydraulic valve body 1. Since the shape of the arc-shaped scraping block 21 is semi-circular, the outer surface of the arc-shaped scraping block 21 fits more closely to the inner wall of the hydraulic valve body 1, thereby improving the cleaning effect.

[0029] Working principle: When the staff needs to scrape and clean the hydraulic oil in the inner cavity of the hydraulic valve body 1, as the staff starts the cylinder 11, the cylinder 11 pushes the triangular inclined block 12 to displace, causing the triangular inclined block 12 to push the surface of the hollow inclined block 13 to displace in the inner cavity of the special-shaped circular block 4. With the displacement of the hollow inclined block 13, by arranging the second spring 20 in the inner cavity of the circular groove 14, the rebounding force of the second spring 20 pushes the cylinder 15 to displace, causing the cylinder 15 to push the surface of the arc-shaped scraping block 21 to fit more closely to the inner wall of the hydraulic valve body 1. At this time, the staff repeatedly pulls the pull rod 5, causing the pull rod 5 to drive the special-shaped circular block 4 to displace in the inner cavity of the hydraulic valve body 1. With the displacement of the special-shaped circular block 4, the special-shaped circular block 4 drives the first spring 16 to stretch and store energy, and at the same time, the special-shaped circular block 4 drives the hollow block 9 to displace, causing the inner cavity of the hollow block 9 to slide on the surface of the sliding rod 17. At this time, the arc-shaped scraping block 21 scrapes the hydraulic oil on the inner wall of the hydraulic valve body 1 and discharges it through the oil outlet pipe 3. Through the setting of the above structure, it is convenient for the staff to scrape and clean the hydraulic oil in the inner cavity of the hydraulic valve body 1, preventing the hydraulic oil from staying in the inner cavity of the hydraulic valve body 1 for a long time and causing damage to the valve core, resulting in unnecessary economic losses.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hydraulic valve core, comprising a hydraulic valve body (1), characterized in that: The top end of the hydraulic valve body (1) is fixedly connected to an oil inlet pipe (2), the bottom end of the hydraulic valve body (1) is fixedly connected to an oil outlet pipe (3), the inner cavity of the hydraulic valve body (1) is slidably connected to a special-shaped round block (4), one end of the special-shaped round block (4) is fixedly connected to a pull rod (5), the interior of the hydraulic valve body (1) is provided with a hollow groove (6), the inner cavity of the hollow groove (6) is slidably connected to a connecting rod (7), one end of the connecting rod (7) close to the special-shaped round block (4) is fixedly connected to the special-shaped round block (4), the interior of the hydraulic valve body (1) is provided with a notch (8), The inner cavity of the notch (8) is slidably connected to a hollow block (9); one end of the hollow block (9) close to the special-shaped round block (4) is fixedly connected to the special-shaped round block (4); an open groove (10) is provided on the surface of the special-shaped round block (4); the inner cavity of the special-shaped round block (4) is fixedly connected to a cylinder (11); the output end of the cylinder (11) is fixedly connected to a triangular inclined block (12); the surface of the triangular inclined block (12) is slidably connected to a hollow inclined block (13); a circular groove (14) is provided inside the hollow inclined block (13); and a cylinder (15) is slidably connected to the inner cavity of the circular groove (14).

2. A hydraulic valve core according to claim 1, characterized in that: A first spring (16) is fixedly connected to the inner cavity of the hydraulic valve body (1); one end of the first spring (16) close to the special-shaped round block (4) is fixedly connected to the special-shaped round block (4).

3. A hydraulic valve core according to claim 1, characterized in that: The inner cavity of the notch (8) is fixedly connected to a sliding rod (17), and the surface of the sliding rod (17) is slidably connected to the inner cavity of the hollow block (9).

4. The hydraulic valve core according to claim 1, characterized in that: A first slide groove (18) is provided inside the irregularly shaped circular block (4), a first sliding block (19) is slidably connected to the inner cavity of the first slide groove (18), and one end of the first sliding block (19) close to the hollow inclined block (13) is fixedly connected to the hollow inclined block (13).

5. The hydraulic valve core according to claim 1, characterized in that: A second spring (20) is fixedly connected to the inner cavity of the circular groove (14); one end of the second spring (20) close to the cylinder (15) is fixedly connected to the cylinder (15).

6. The hydraulic valve core according to claim 1, characterized in that: An arc-shaped scraper block (21) is fixedly connected to one end of the cylinder (15), and a surface of the arc-shaped scraper block (21) is slidably connected to the inner cavity of the open groove (10).

7. A hydraulic valve core according to claim 6, characterized in that: The arc-shaped scraper (21) is in the shape of a semicircular arc, and the surface of the arc-shaped scraper (21) fits in the inner cavity of the hydraulic valve body (1).

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