Hydraulic control one-way valve

Abstract

The utility model discloses a hydraulic control one-way valve which comprises a valve body, a control port, a liquid inlet, a liquid outlet, a valve rod installed in the valve body in a sliding mode and a valve element arranged on the outer side of the valve rod, the control port, the liquid inlet and the liquid outlet are formed in the valve body, one side of the valve body is in threaded connection with a threaded sleeve, and the middle of the threaded sleeve is in threaded connection with an adjusting sleeve. One end of the valve rod penetrates through the threaded sleeve and extends into the adjusting sleeve, a first spring seat is installed on the outer side of the valve rod, a first spring is arranged on the first spring seat, and a hexagonal frame is installed on the outer side of the threaded sleeve in a sliding mode. And through arrangement of a connecting rod, a concave part, a driving ring, a first push block and a second push block, the adjusting sleeve can adjust fluid pressure required by conduction, and the indicating arrow can move along with the adjusting sleeve, so that correct indication of the indicating arrow and scales is ensured.

Description

Technical Field

[0001] This utility model relates to the field of one-way valve technology, specifically a hydraulically controlled one-way valve. Background Technology

[0002] A hydraulically controlled check valve is a type of hydraulic valve that adds a hydraulic control device to a regular check valve. It is a type of directional control valve that can not only achieve the "forward conduction and reverse cut-off" function of a regular check valve, but also enable the reverse oil circuit to be conducted after the control hydraulic oil is introduced.

[0003] In order to be used under different operating conditions, some pilot-operated check valves are usually equipped with an adjustment sleeve to adjust the fluid pressure required for the valve to open. However, after adjustment, operators cannot clearly understand the fluid pressure required for the valve to open, which may cause the valve to malfunction or even be damaged. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulically controlled check valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydraulically controlled one-way valve, comprising a valve body, a control port, an inlet and an outlet disposed on the valve body, a valve stem slidably mounted inside the valve body, and a valve core disposed outside the valve stem. A threaded sleeve is threaded to one side of the valve body, and an adjusting sleeve is threaded to the middle of the threaded sleeve. One end of the valve stem extends through the threaded sleeve into the interior of the adjusting sleeve. A first spring seat is mounted on the outside of the valve stem, and a first spring is provided on the first spring seat. A hexagonal frame is slidably mounted on the outside of the threaded sleeve. Multiple connecting rods are provided on one side of the hexagonal frame, and a drive ring is connected to one end of each connecting rod. Recesses are provided on both sides of the drive ring. Multiple first push blocks and second push blocks are respectively provided on the outside of the adjusting sleeve. The recesses are located between the first push blocks and the second push blocks. A scale is provided on the outside of the threaded sleeve, and an observation port corresponding to the scale is opened on the hexagonal frame.

[0006] As a preferred embodiment of this utility model, an indicator arrow is provided on the outer side of the hexagonal frame, and the indicator arrow is located on one side of the observation port.

[0007] As a preferred embodiment of this utility model, a second spring seat is installed on the valve stem, and a second spring is sleeved on the outside of the second spring seat. One end of the second spring abuts against the second spring seat, and the other end of the second spring abuts against the threaded sleeve.

[0008] As a preferred embodiment of this utility model, the valve body is provided with a valve seat that cooperates with the valve core.

[0009] In a preferred embodiment of this utility model, the valve stem is slidably mounted in the middle of the threaded sleeve.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the scale, hexagonal frame and indicator arrow of this utility model allow the operator to clearly understand the fluid pressure required for conduction, and the connecting rod, recess, drive ring, first push block and second push block of the utility model allow the adjusting sleeve to adjust the fluid pressure required for conduction, and the indicator arrow can move with the adjusting sleeve, thereby ensuring that the indicator arrow and scale indication are correct. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0013] Figure 3 This is a cross-sectional view of the present invention;

[0014] Figure 4 This utility model Figure 3 Enlarged view of point B in the middle;

[0015] Figure 5 This is a schematic diagram of the structure of the hexagonal frame, connecting rod, and drive ring of this utility model when they are not installed;

[0016] Figure 6 This utility model Figure 5 Enlarged view of point C in the middle;

[0017] Figure 7 This is a schematic diagram of the structure of the hexagonal frame, connecting rod, and drive ring of this utility model;

[0018] Figure 8 This is a top view of the present invention.

[0019] In the diagram: 1. Valve body; 2. Inlet; 3. Outlet; 4. Screw sleeve; 5. Adjusting sleeve; 6. Hexagonal frame; 7. Indicating arrow; 8. Scale; 9. Connecting rod; 10. Drive ring; 11. First push block; 12. Recess; 13. Valve seat; 14. Valve core; 15. First spring; 16. First spring seat; 17. Second spring; 18. Second spring seat; 19. Valve stem; 20. Second push block; 21. Observation port; 22. Control port. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 8 This utility model provides a technical solution: a hydraulically controlled one-way valve, including a valve body 1, a control port 22, an inlet port 2 and an outlet port 3 disposed on the valve body 1, a valve stem 19 slidably installed inside the valve body 1, and a valve core 14 disposed outside the valve stem 19. A threaded sleeve 4 is threadedly connected to one side of the valve body 1, and an adjusting sleeve 5 is threadedly connected to the middle of the threaded sleeve 4. When the adjusting sleeve 5 is rotated to move to the right, the first spring 15 will gradually return to its original position and extend. At this time, the fluid pressure required to push the valve core 14 to move and conduct gradually decreases. When the adjusting sleeve 5 is rotated to move to the left... When the valve core 14 moves to open the valve, the first spring 15 is gradually compressed by the adjusting sleeve 5. This gradually increases the fluid pressure required to open the valve, thus allowing for adjustment of the fluid pressure and improving applicability. One end of the valve stem 19 extends through the screw sleeve 4 into the interior of the adjusting sleeve 5. A first spring seat 16 is installed on the outside of the valve stem 19, and the first spring 15 is mounted on the first spring seat 16. A hexagonal frame 6 is slidably installed on the outside of the screw sleeve 4. Multiple connecting rods 9 are provided on one side of the hexagonal frame 6. One end of each connecting rod 9 is connected to a drive ring 10. The drive ring 10 has multiple connecting rods on both sides. Each component is provided with a recessed portion 12, which is an annular structure to avoid interfering with the normal rotation of the first push block 11 and the second push block 20. Multiple first push blocks 11 and second push blocks 20 are respectively provided on the outer side of the adjusting sleeve 5. When the adjusting sleeve 5 moves to the right, it drives the second push blocks 20 and the first push blocks 11 to move to the right. The second push blocks 20 push the recessed portion 12, causing the drive ring 10 to move to the right. The drive ring 10, through the connecting rod 9, drives the hexagonal frame 6 to move to the right. The hexagonal frame 6 causes the indicator arrow 7 to move to the right. The more the number on the scale 8 indicated by the indicator arrow 7 increases, the more likely it is to move to the right. As the adjusting sleeve 5 moves to the left, it drives the first push block 11 to move to the left. The first push block 11 pushes the recessed part 12 to make the drive ring 10 move to the left. The hexagonal frame 6 makes the indicator arrow 7 move to the left. The number of the scale 8 indicated by the indicator arrow 7 becomes larger and larger. The recessed part 12 is located between the first push block 11 and the second push block 20. The outer side of the screw sleeve 4 is provided with a scale 8. The scale 8 makes it convenient for the staff to understand the fluid pressure required for the conduction. The hexagonal frame 6 is provided with an observation port 21 corresponding to the scale 8. The observation port 21 makes it convenient for the staff to observe the scale 8.

[0022] The hexagonal frame 6 has an indicator arrow 7 on its outer side. The indicator arrow 7 is used to align with the scale 8, making it easier for staff to observe. The indicator arrow 7 is located on one side of the observation port 21.

[0023] The valve stem 19 is equipped with a second spring seat 18, and a second spring 17 is sleeved on the outside of the second spring seat 18. The second spring 17 is used to apply a thrust to the second spring seat 18. The thrust received by the second spring seat 18 is transmitted to the valve core 14 through the valve stem 19, so that the valve core 14 is pressed against the valve seat 13. One end of the second spring 17 is pressed against the second spring seat 18, and the other end of the second spring 17 is pressed against the threaded sleeve 4.

[0024] The valve body 1 has a valve seat 13 inside that cooperates with the valve core 14. When the valve core 14 and the valve seat 13 are pressed together, a rigid sealing surface is formed, thereby blocking the flow of fluid.

[0025] The valve stem 19 is slidably mounted in the middle of the screw sleeve 4, which can limit one end of the valve stem 19, making the valve stem 19 more stable when moving.

[0026] Specifically, when the fluid pressure required for conduction needs to be reduced, rotating the adjusting sleeve 5 to the right causes the first spring 15 to gradually return to its original position and extend. At this time, the fluid pressure required to drive the valve core 14 to conduct gradually decreases. Furthermore, when the adjusting sleeve 5 moves to the right, it drives the second push block 20 to the right. The second push block 20 pushes the recessed portion 12, causing the drive ring 10 to move to the right. The drive ring 10, through the connecting rod 9, drives the hexagonal frame 6 to the right. The hexagonal frame 6 causes the indicator arrow 7 to move to the right, and the number on the scale 8 indicated by the indicator arrow 7 decreases. When the fluid pressure required for conduction needs to be increased, rotating the adjusting sleeve 5 to the left causes the first spring 15 to be gradually compressed. At this time, the fluid pressure required to drive the valve core 14 to conduct gradually increases. Furthermore, when the adjusting sleeve 5 moves to the left, it drives the first push block 11 to the left, and the first push block 11 pushes the recessed portion 12. The drive ring 10 moves to the left, which in turn drives the hexagonal frame 6 to the left via the connecting rod 9. The hexagonal frame 6 causes the indicator arrow 7 to move to the left, and the number on the scale 8 indicated by the indicator arrow 7 increases. The operator can observe the alignment of the indicator arrow 7 with the scale 8 through the observation port 21 to understand the fluid pressure required for conduction. When fluid flows in from the inlet port 2 and the fluid pressure is greater than the force exerted by the second spring 17 and the first spring 15 on the valve core 14, the fluid will push the valve core 14 to move, separating the valve core 14 from the valve seat 13, and the fluid will flow out from the outlet port 3. When fluid flows in from the outlet port 3, it cannot flow out from the inlet port 2 due to the obstruction of the valve seat 13 and the valve core 14, achieving a unidirectional flow effect. When hydraulic oil is introduced into the control port 22, it will push the valve stem 19 to the right, which in turn drives the valve core 14 to the right, separating the valve core 14 from the valve seat 13. At this time, the fluid flowing in from the outlet port 3 can flow out from the inlet port 2.

[0027] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulically controlled check valve, comprising a valve body (1), a control port (22), an inlet (2) and an outlet (3) disposed on the valve body (1), a valve stem (19) slidably mounted inside the valve body (1), and a valve core (14) disposed outside the valve stem (19), characterized in that: A threaded sleeve (4) is threaded onto one side of the valve body (1), and an adjusting sleeve (5) is threaded onto the middle of the threaded sleeve (4). One end of the valve stem (19) extends through the threaded sleeve (4) into the interior of the adjusting sleeve (5). A first spring seat (16) is installed on the outside of the valve stem (19), and a first spring (15) is provided on the first spring seat (16). A hexagonal frame (6) is slidably installed on the outside of the threaded sleeve (4), and a plurality of connecting rods (9) are provided on one side of the hexagonal frame (6). The connecting rod (9) is connected to a drive ring (10) at one end. The drive ring (10) has recesses (12) on both sides. The adjusting sleeve (5) has multiple first push blocks (11) and second push blocks (20) on its outer side. The recesses (12) are located between the first push blocks (11) and the second push blocks (20). The screw sleeve (4) has a scale (8) on its outer side. The hexagonal frame (6) has an observation port (21) corresponding to the scale (8).

2. The hydraulically controlled check valve according to claim 1, characterized in that: An indicator arrow (7) is provided on the outside of the hexagonal frame (6), and the indicator arrow (7) is located on one side of the observation port (21).

3. A hydraulically controlled check valve according to claim 1, characterized in that: A second spring seat (18) is installed on the valve stem (19). A second spring (17) is sleeved on the outside of the second spring seat (18). One end of the second spring (17) abuts against the second spring seat (18), and the other end of the second spring (17) abuts against the screw sleeve (4).

4. A hydraulically controlled check valve according to claim 1, characterized in that: The valve body (1) is provided with a valve seat (13) that cooperates with the valve core (14).

5. A hydraulically controlled check valve according to claim 1, characterized in that: The valve stem (19) is slidably mounted in the middle of the threaded sleeve (4).

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