Valve element structure of hydraulic valve

Abstract

The utility model provides a valve core structure of a hydraulic valve, which relates to the technical field of hydraulic valves and comprises a valve casing, a valve cavity is arranged in the valve casing, a valve core is arranged in the valve cavity, two ends of the valve core correspondingly penetrate to the outer side of the valve casing, two bumps are fixed on the outer surface of the valve core, and the valve core is arranged in the valve cavity. A protruding block is arranged in the valve element, the outer surface of the protruding block is attached to the inner wall of the valve cavity, an annular cavity is formed in the position, close to the edge of one end, of the interior of the valve element, and a plurality of thin flow channels are formed in the inner wall of one side of the annular cavity at equal intervals. The hydraulic oil in the valve cavity can be introduced into the annular cavity through the thin flow channel by only rotating the adjusting screw rod to enable the side openings in the adjusting screw rod to be opposite to the annular cavity, then enters the cylindrical cavity through the side openings and is finally discharged from the drain hole, so that the pressure in the closed volume can be released.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic valve technical field especially relates to a hydraulic valve spool structure. BACKGROUND

[0002] Hydraulic valve is a kind of automation element operated by pressure oil, it is controlled by pressure oil of pressure regulating valve, usually combined with electromagnetic pressure regulating valve, it can be used for the on-off of long-distance control of hydropower station oil, gas, water pipeline system. It is often used in clamping, control, lubrication and other oil circuits. There are direct-acting type and pilot type, and the pilot type is mostly used.

[0003] At present, when two-position three-way electromagnetic valve is used as loop control element in the hydraulic loop system inside the equipment, after the loop appears fault and generates closed volume, since the pipeline loop cannot be well disassembled inside the equipment, only the electromagnetic valve part installed outside can be disassembled, and the hydraulic oil generated inside the closed volume is instantaneously ejected outside under the action of high pressure when disassembling, which is easy to injure the operator. INVENTION CONTENTS

[0004] The utility model discloses a kind of hydraulic valve spool structures to solve prior art problems.

[0005] To solve the above technical problems, the basic idea of the technical scheme adopted by the utility model is:

[0006] A kind of hydraulic valve spool structure, including valve housing, the inside of the valve housing is provided with valve cavity, the inside of the valve cavity is provided with valve core, the both ends of the valve core are correspondingly penetrated to the outside of valve housing, the outer surface of the valve core is fixed with two lugs, the outer surface of the lug is mutually attached with the inner wall of valve cavity, annular cavity is set in the inside of the valve core close to one end edge, multiple fine flow channels are set in the inner wall of one side of the annular cavity at equal intervals, one end of multiple fine flow channels is correspondingly penetrated to the outside of one of the lugs.

[0007] Optionally, adjusting hole is set in the inside of the valve core close to one end edge, the adjusting hole is mutually communicated with annular cavity, one end of the adjusting hole is penetrated to one end of the valve core.

[0008] Optionally, adjusting screw is arranged in the adjusting hole, and a cylindrical cavity is formed in the adjusting screw.

[0009] Optionally, a drain hole is formed in one side of the cylindrical cavity, one end of the drain hole is penetrated to one end of the adjusting screw, and multiple side openings are formed in the inner wall of the cylindrical cavity at equal intervals in the circumferential direction.

[0010] Optionally, adjusting cavities are formed in the inside of the valve housing close to both side edges, and coils are arranged in the inside of the two adjusting cavities.

[0011] Optionally, the top of the valve shell is provided with an electric control module, and the electric control module is electrically connected with the two coils.

[0012] Optionally, the front side of the valve shell is provided with a water inlet, the rear side of the valve shell is provided with a first outlet near one side edge, and the rear side of the valve shell is provided with a second outlet near the other side edge, and the water inlet, the first outlet and the second outlet are all communicated to the inside of the valve cavity.

[0013] After the above technical scheme is adopted, the present application has the following advantages compared with the prior art, of course, any product implementing the present application does not necessarily need to achieve all the advantages described below:

[0014] 1. In the present application, when the device is used as a loop control element, after a closed volume is generated due to a fault in the loop, only the multiple side openings on the adjusting screw are rotated to be opposite to the annular cavity, the hydraulic oil in the valve cavity can be introduced into the annular cavity through the fine flow channel, then enters the cylindrical cavity through the side openings, and finally is discharged from the drain hole, so that the pressure in the closed volume can be released.

[0015] 2. In the present application, when the adjusting screw is rotated, the adjusting screw is rotated from the side by an external wrench, so that the outlet of the drain hole on the adjusting screw faces one side, which can prevent the hydraulic oil from being sprayed out of the drain hole and injuring people at the moment of conduction in the valve cavity. The coil is arranged in the adjusting cavity of the valve shell, and the coil is connected with the electric control module, so that the power-on and power-off of the coil can be controlled, thereby controlling the movement of the valve core. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0017] Figure 1 A side view of the hydraulic valve core structure is provided for the present application;

[0018] Figure 2 Another side view of the hydraulic valve core structure is provided for the present application;

[0019] Figure 3 A cross-sectional view of the hydraulic valve core structure is provided for the present application;

[0020] Figure 4 The present application Figure 3 An enlarged view of position A in the present application.

[0021] In the drawings, the components represented by the numbers are listed as follows:

[0022] 1. Valve housing; 2. Electrical control module; 3. Inlet; 4. First outlet; 5. Second outlet; 6. Valve core; 7. Valve cavity; 8. Protrusion; 9. Adjustment cavity; 10. Coil; 11. Narrow flow channel; 12. Adjustment screw; 13. Adjustment hole; 14. Annular cavity; 15. Cylindrical cavity; 16. Side port; 17. Drain hole.

[0023] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] Example 1, such as Figures 1-4 As shown, this utility model provides a hydraulic valve core structure technical solution: including a valve shell 1, a valve cavity 7 is provided inside the valve shell 1, a valve core 6 is provided inside the valve cavity 7, both ends of the valve core 6 extend to the outside of the valve shell 1, two protrusions 8 are fixed on the outer surface of the valve core 6, the outer surface of the protrusions 8 is in contact with the inner wall of the valve cavity 7, an annular cavity 14 is provided inside the valve core 6 near one edge, a plurality of fine flow channels 11 are provided at equal intervals on one side inner wall of the annular cavity 14, and one end of each of the plurality of fine flow channels 11 extends to the outside of one of the protrusions 8.

[0026] The effect achieved by the entire embodiment 1 is that when this device is used as a loop control element, after a loop failure causes a closed volume, it is only necessary to rotate the adjusting screw 12 so that the multiple side ports 16 on the adjusting screw 12 are opposite to the annular cavity 14. The hydraulic oil inside the valve cavity 7 can be introduced into the annular cavity 14 through the narrow flow channel 11, and then enter the cylindrical cavity 15 through the side ports 16. Finally, it is discharged from the drain hole 17, which can release the pressure inside the closed volume.

[0027] Example 2, as Figures 1-4As shown, the inside of the valve core 6 is provided with an adjusting hole 13 near one end edge, the adjusting hole 13 is communicated with the annular cavity 14, one end of the adjusting hole 13 penetrates to one end of the valve core 6, the inside of the adjusting hole 13 is provided with an adjusting screw 12, the inside of the adjusting screw 12 is provided with a cylindrical cavity 15, one side of the cylindrical cavity 15 is provided with a drain hole 17, one end of the drain hole 17 penetrates to one end of the adjusting screw 12, a plurality of side openings 16 are equidistantly arranged on the inner wall of the cylindrical cavity 15 in the circumferential direction, the inside of the valve shell 1 is provided with adjusting cavities 9 near both side edges, the inside of the two adjusting cavities 9 is provided with coils 10, the top of the valve shell 1 is provided with an electric control module 2, the electric control module 2 is electrically connected with the two coils 10, the front side of the valve shell 1 is provided with a water inlet 3, the rear side of the valve shell 1 is provided with a first outlet 4 near one side edge, the rear side of the valve shell 1 is provided with a second outlet 5 near the other side edge, the water inlet 3, the first outlet 4 and the second outlet 5 are communicated to the inside of the valve cavity 7.

[0028] The effect achieved by the whole embodiment 2 is that when the adjusting screw 12 is rotated, the outlet of the drain hole 17 on the adjusting screw 12 is turned to one side through the external wrench from the side, so that the situation that hydraulic oil is sprayed from the drain hole 17 to hurt people can be prevented from occurring at the moment when the valve cavity 7 is conducted, the coil 10 is arranged in the adjusting cavity 9 of the valve shell 1, the coil 10 is connected with the electric control module 2, the electrification and power loss of the coil 10 can be controlled, so that the movement of the valve core 6 can be controlled.

[0029] Working principle: when the device is used as a loop control element, after a closed dead volume is generated due to a fault in the loop, the pressure in the closed dead volume can be released by rotating the adjusting screw 12, so that the plurality of side openings 16 on the adjusting screw 12 are opposite to the annular cavity 14, the hydraulic oil in the valve cavity 7 is introduced into the annular cavity 14 through the fine flow channel 11, then enters the cylindrical cavity 15 through the side opening 16, and finally is discharged from the drain hole 17, when the adjusting screw 12 is rotated, the outlet of the drain hole 17 on the adjusting screw 12 is turned to one side through the external wrench from the side, so that the situation that hydraulic oil is sprayed from the drain hole 17 to hurt people can be prevented from occurring at the moment when the valve cavity 7 is conducted, the coil 10 is arranged in the adjusting cavity 9 of the valve shell 1, the coil 10 is connected with the electric control module 2, the electrification and power loss of the coil 10 can be controlled, so that the movement of the valve core 6 can be controlled.

[0030] The utility model is not limited to the above-mentioned embodiment, anyone should know the structural change made under the inspiration of the utility model, any technical scheme with the same or similar to the utility model falls into the protection scope of the utility model. The utility model does not describe the technology, shape, structure part in detail, which is the known technology.

Claims

1. A hydraulic valve spool structure comprising a valve housing (1), characterized in that: The inside of the valve shell (1) is provided with a valve cavity (7), the inside of the valve cavity (7) is provided with a valve core (6), both ends of the valve core (6) correspond to penetrate to the outside of the valve shell (1), the outer surface of the valve core (6) is fixed with two protrusions (8), the outer surface of the protrusion (8) and the inner wall of the valve cavity (7) are matched with each other, the inside of the valve core (6) is provided with an annular cavity (14) near one end edge, a plurality of fine flow channels (11) are equidistantly arranged on the inner wall of one side of the annular cavity (14), one end of the plurality of fine flow channels (11) correspond to penetrate to the outside of one of the protrusions (8).

2. A hydraulic valve spool structure according to claim 1, characterized by: The inside of the valve core (6) is provided with an adjusting hole (13) near one end edge, the adjusting hole (13) and the annular cavity (14) are communicated with each other, one end of the adjusting hole (13) penetrates to one end of the valve core (6).

3. A hydraulic valve spool structure according to claim 2, wherein: The inside of the adjusting hole (13) is provided with an adjusting screw (12), the inside of the adjusting screw (12) is provided with a cylindrical cavity (15).

4. A hydraulic valve spool structure according to claim 3, wherein: One side of the cylindrical cavity (15) is provided with a drainage hole (17), one end of the drainage hole (17) penetrates to one end of the adjusting screw (12), the inner wall of the cylindrical cavity (15) is equidistantly provided with a plurality of side openings (16) in the circumferential direction.

5. The hydraulic valve spool structure of claim 1, wherein: The inside of the valve shell (1) is provided with an adjusting cavity (9) near both side edges, the inside of the two adjusting cavities (9) is provided with a coil (10).

6. A hydraulic valve spool structure according to claim 5, wherein: The top of the valve shell (1) is provided with an electric control module (2), the electric control module (2) and the two coils (10) are electrically connected.

7. The hydraulic valve spool structure of claim 1, wherein: The front side of the valve shell (1) is provided with a water inlet (3), the rear side of the valve shell (1) is provided with a first outlet (4) near one side edge, the rear side of the valve shell (1) is provided with a second outlet (5) near the other side edge, the water inlet (3), the first outlet (4) and the second outlet (5) are communicated to the inside of the valve cavity (7).

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