Mechanically adjustable seal device

Abstract

The utility model relates to mechanical seal technical field discloses mechanical adjustable sealing device, including shell one, the inside fixed connection of shell one has the inner race pipe no.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal technology, and in particular to a mechanically adjustable sealing device. Background Technology

[0002] The main body of a mechanically adjustable sealing device typically consists of a base with a sealing groove, an adjustment mechanism (such as a snap, thread, or expansion sleeve) that can change the sealing strength, and an elastic sealing element (such as an O-ring), supplemented by guide limiters, operating handles, and other structures to achieve dynamic sealing and flexible adjustment.

[0003] Mechanically adjustable sealing devices mainly consist of a base, a sealing element, a connecting mechanism, and auxiliary components. The base is the core carrier of the device, typically a hollow cylindrical structure, often made of metal or high-strength engineering plastics. Its inner or outer wall has sealing grooves. The sealing element, generally made of elastic materials such as O-rings or lip seals, is installed within the sealing groove and fills gaps through elastic deformation. Connecting mechanisms are commonly snap-fit, threaded, or plug-in types. Snap-fit ​​types have sliding multi-position retaining rings, threaded types adjust the sealing element compression by rotating a nut, and plug-in types use springs or locking pins for quick locking. In addition, a guide structure ensures precise alignment, and a limit device prevents over-adjustment. During operation, the quick-connect sealing head is aligned with the connecting pipe or interface. Operating the connecting mechanism pushes the base to compress the sealing element, causing it to tightly adhere to the contact surface, blocking the leakage path of the medium and achieving a quick and reliable sealing connection. Disassembly is simple: just release the locking mechanism for easy separation.

[0004] Existing mechanically adjustable sealing devices suffer from several drawbacks. Firstly, insufficient precision in the position design can lead to uneven compression of the sealing ring, resulting in insufficient sealing force at some positions and causing leakage. Secondly, excessive compression can accelerate the aging and deformation of the sealing ring. Thirdly, the complex adjustment mechanisms, such as the difficulty in engaging the snap-fit ​​mechanism and the need for multiple operations for threaded adjustments, result in low assembly efficiency. Furthermore, the multi-position structure increases the difficulty of design, manufacturing, and assembly, leading to higher costs. The replacement and maintenance of the sealing ring and position components are also more complex and costly. Therefore, a mechanically adjustable sealing device is proposed to address these issues. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a mechanically adjustable sealing device, which aims to improve the leakage problem caused by insufficient sealing at some positions in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a mechanically adjustable sealing device, comprising a housing, an inner ring tube 1 fixedly connected inside the housing, an inner ring tube 2 fixedly connected inside the inner ring tube 1, a spring 3 sleeved outside the inner ring tube 2, a sealing gas ring fixedly connected to the right end of the spring 3, a snap-fit ​​groove opened inside the housing, a snap-fit ​​ball slidably connected inside the snap-fit ​​groove, a slot inner ring slidably connected inside the housing, a spring-loaded housing slidably connected outside the slot inner ring, a spring 1 fixedly connected to the right end of the spring 1, a housing 2 fixedly connected to the right end of the spring 1, and a flow regulating component fixedly connected to the left end of the housing.

[0007] As a further description of the above technical solution: the flow regulating component includes a regulator, the right end of which is fixedly connected to the left end of the outer casing, a flow limiting shell is fixedly connected inside the regulator, a rotating rod is rotatably connected inside the flow limiting shell, a rotating plate holder is fixedly connected to the bottom of the rotating rod, a flow rotating plate is fixedly connected inside the rotating plate holder, and a round shaft is rotatably connected to the flow rotating plate.

[0008] As a further description of the above technical solution: a limiting groove is provided on the outside of the spring-loaded outer shell, and the outside of the limiting groove is in contact with the outside of the snap-fit ​​ball;

[0009] As a further description of the above technical solution: an inner ring tube three is fixedly connected inside the spring-loaded outer shell, and the outer side of the inner ring tube three is slidably connected inside the inner ring tube one;

[0010] As a further description of the above technical solution: an extrusion groove is provided on the outside of the outer shell, and an extrusion ball is slidably connected inside the extrusion groove;

[0011] As a further description of the above technical solution: a rotating rod is fixedly connected to the outside of the rotating rod, and a moving rod is fixedly connected inside the rotating rod;

[0012] As a further description of the above technical solution: the movable rod is slidably connected to the outside with an arc groove, and the regulator is rotatably connected to the outside with a rotating shell, the rotating shell having an arc groove inside;

[0013] As a further description of the above technical solution: a second spring is fixedly connected to the outside of the extrusion ball, and a third outer shell is fixedly connected to the second spring.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the snap-fit ​​connection is achieved by the outer shell three working with spring two, spring two working with the compression ball, the compression ball working with the snap-fit ​​ball, and the locking ball working with the limiting groove. Spring one working with the spring-loaded outer shell, the spring-loaded outer shell working with the inner ring of the slot, protects the surface of the inner ring of the slot when snapping at different positions. Spring three working with the sealing gas ring, the sealing gas ring working with the inner ring three, and the inner ring three working with the inner ring tube one, thereby achieving a sealing effect and preventing leakage caused by insufficient sealing force due to excessive compression accelerating the aging and deformation of the sealing ring.

[0016] 2. In this utility model, the rotating shell is combined with the moving rod, the moving rod is combined with the rotating rod, the rotating rod is combined with the rotating rod, and the rotating rod is combined with the flow plate, thereby realizing the flow control of the liquid, and thus realizing the instantaneous on / off of the liquid pipeline, greatly improving the flow start / stop efficiency and reducing manual operation time. Attached Figure Description

[0017] Figure 1 A schematic diagram of the outer casing of the mechanically adjustable sealing device proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the spring-loaded outer shell of the mechanically adjustable sealing device proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the outer shell of the mechanically adjustable sealing device proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the flow plate of the mechanically adjustable sealing device proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of the outer shell of the mechanically adjustable sealing device proposed in this utility model.

[0022] Legend:

[0023] 1. Outer shell 1; 2. Inner ring tube 1; 3. Inner ring tube 2; 4. Inner ring tube 3; 5. Slot inner ring; 6. Spring-type outer shell; 7. Spring 1; 8. Outer shell 2; 9. Outer shell 3; 10. Spring 2; 11. Extrusion ball; 12. Snap-fit ​​groove; 13. Spring 3; 14. Sealing air ring; 15. Extrusion groove; 16. Restriction groove; 17. Regulator; 18. Flow limiting shell; 19. Moving rod; 20. Rotating rod; 21. Rotating rod; 22. Rotating plate retainer; 23. Flow rotating plate; 24. Round shaft; 25. Rotating shell; 26. Curved groove; 27. Snap-fit ​​ball. Detailed Implementation

[0024] 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.

[0025] Reference Figures 1 to 3 This utility model provides an embodiment of a mechanically adjustable sealing device, including a housing 1, which serves as the main frame of the device, providing a mounting base for internal components and maintaining the overall structural rigidity. An inner ring tube 2 is fixedly connected inside the housing 1, forming the main channel for fluid transmission. Its smooth inner wall design reduces liquid flow resistance. An extrusion groove 15 is provided on the outside of the housing 1, which limits the movement trajectory of the extrusion ball 11, allowing it to slide precisely along the groove to achieve the extrusion function. The extrusion ball 11 is slidably connected inside the extrusion groove 15, and contacts the locking ball 27 through the spherical surface to uniformly transmit the extrusion force to release or lock the locking state. A spring 2 10 is fixedly connected to the outside of the extrusion ball 11, which uses elastic restoring force to keep the extrusion ball 11 always in contact with the inner wall of the extrusion groove 15, ensuring movement stability. The spring 2 10 is fixedly connected to a housing 3 9, which serves as the operating end. When the housing 3 9 is rotated, the spring 2 10 drives the extrusion ball 11 to move along the extrusion groove 15.

[0026] The inner ring tube 2 is fixedly connected to the inner ring tube 3, forming a double-layer pipe structure, which buffers the fluid to improve sealing reliability. The inner ring tube 2 is fitted with a spring 3 13, which provides the popping force for the sealing ring 14 through compression and energy storage, ensuring that it fits tightly against the sealing surface. The right end of the spring 3 13 is fixedly connected to the sealing ring 14, which has elastic deformation capability and fills the gap after being compressed to achieve a zero-leakage sealing effect.

[0027] The outer casing 1 has a snap-fit ​​groove 12 inside, which provides a snap-fit ​​positioning point for the snap-fit ​​ball 27. By cooperating with the snap-fit ​​ball 27, the axial movement of the spring-loaded outer casing 6 is restricted. The snap-fit ​​ball 27 is slidably connected inside the snap-fit ​​groove 12. Its spherical surface cooperates with the limiting groove 16 of the spring-loaded outer casing 6 to achieve multi-position locking to adapt to different sealing position requirements. The inner ring 5 of the slot is slidably connected inside the outer casing 1, which provides axial movement guidance for the inner ring tube 4 to ensure that its linear movement does not deviate. The spring-loaded outer casing 6 is slidably connected outside the slot inner ring 5. The position is adjusted by sliding cooperation, and the elastic force of the spring 7 is transmitted at the same time. The inner ring tube 4 is fixedly connected inside the spring-loaded outer casing 6. Together with the inner ring tube 2 and the inner ring tube 3, they form a multi-stage fluid channel, and the flow cross-sectional area is changed by relative displacement.

[0028] The outer surface of the inner ring tube 3 4 is slidably connected to the inside of the inner ring tube 1 2. Precise clearance fitting reduces fluid leakage to ensure transmission stability. The outer surface of the spring-loaded outer shell 6 has a limiting groove 16, which forms a locking structure with the snap-fit ​​ball 27. When inserted, it fixes the position of the spring-loaded outer shell 6. The outer surface of the limiting groove 16 contacts the outer surface of the snap-fit ​​ball 27, allowing for flexible switching between locking and releasing through spherical contact for easy adjustment. A spring 1 7 is fixedly connected to the right end of the spring-loaded outer shell 6, compressing and storing energy. When the outer shell 2 8 moves, it releases pressure to maintain the stable position of the spring-loaded outer shell 6. The right end of the spring 1 7 is fixedly connected to the outer shell 2 8, serving as the operating end. When moved outward, it triggers the spring 1 7 to release pressure and drive related components in conjunction. A flow regulating component is fixedly connected to the left end of the outer shell 1, used for precise control of the liquid flow rate within the sealing device.

[0029] Reference Figure 1 , Figure 4 , Figure 5 The flow regulation assembly includes a regulator 17, which serves as a protective housing for the regulating component and is fixedly connected to the housing 1 to transmit the regulating action. The right end of the regulator 17 is fixedly connected to the left end of the housing 1 to achieve a rigid connection and ensure the stability of the regulation. The inside of the regulator 17 is fixedly connected to a flow limiting shell 18, which provides mounting support for components such as the rotating rod 21 to form a stable rotation structure. The inside of the flow limiting shell 18 is rotatably connected to the rotating rod 21, which serves as the core transmission component. When rotating, it drives the flow rotating plate 23 to rotate to change the flow area.

[0030] A rotating rod 20 is fixedly connected to the outside of the rotating rod 21. The displacement of the moving rod 19 is converted into the rotational motion of the rotating rod 21 through the rod-like structure. The moving rod 19 is fixedly connected inside the rotating rod 20 and cooperates with the arcuate groove 26 of the rotating shell 25. It moves with the rotation of the rotating shell 25. The arcuate groove 26 is slidably connected to the outside of the moving rod 19. By sliding in the groove, the rotational motion of the rotating shell 25 is converted into the linear displacement of the moving rod 19. The rotating shell 25 is rotatably connected to the outside of the regulator 17, which serves as the adjustment operation end. When it rotates, it drives the internal components to move together.

[0031] The rotating shell 25 has an arc groove 26 inside. Its arc design allows the moving rod 19 to slide and drive the rotating rod 20 to rotate slightly. The bottom of the rotating rod 21 is fixedly connected to the rotating plate holder 22, which fixes the flow plate 23 to ensure that it rotates synchronously with the rotating rod 21. The flow plate 23 is fixedly connected inside the rotating plate holder 22. By rotating, the flow cross-sectional area is changed to achieve precise control of the liquid flow rate. The flow plate 23 is rotatably connected to a round shaft 24, which provides the rotation axis for the flow plate 23 to ensure its flexible rotation.

[0032] Working principle: The snap-on position of the sealing snap needs to be adjusted. Rotating the outer shell 9 causes the compression ball 11 to move along the track of the compression groove 15 inside the outer shell 9, releasing the compression ball 11 from the snap-on ball 27. The outer shell 8 is moved outward, and the spring 7 in the cylindrical groove inside the outer shell 8 releases the pressure. The spring-loaded outer shell 6 remains in position due to the force of the spring 7. At the same time, because the snap-on ball 27 and the limiting groove 16 are no longer locked, the inner ring 5 of the slot and the inner ring tube 4 will also move backward. As the inner ring tube 4 moves backward, the pressure of the spring 13 is released, and the sealing gas ring 14 is ejected forward by the force of the spring 13. When it moves to the appropriate position, rotating the outer shell 9 re-locks the snap-on ball 27 and the snap-on groove 12. At the same time, the cooperation of the inner ring tube 2, the inner ring tube 3, the inner ring tube 4 and the sealing gas ring 14 achieves the sealing of the snap-on.

[0033] When it is necessary to adjust the flow rate of the liquid in the sealing buckle, the rotating shell 25 can be rotated to change the position of the moving rod 19 in the arc groove 26 in the rotating shell 25, causing the rotating rod 20 to rotate slightly, so that the rotating rod 21 rotates in the flow limiting shell 18. At the same time, the rotating plate holder 22, which is fixedly connected to the rotating rod 21, rotates together, so that the flow rotating plate 23 also rotates, thereby realizing the control of the liquid flow rate.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mechanically adjustable sealing device, comprising a housing (1), characterized in that: The inner ring tube 1 (2) is fixedly connected inside the outer shell 1 (1). The inner ring tube 2 (3) is fixedly connected inside the inner ring tube 1 (2). The outer ring tube 2 (3) is fitted with a spring 3 (13). The right end of the spring 3 (13) is fixedly connected with a sealing gas ring (14). The outer shell 1 (1) has a snap-fit ​​groove (12). The snap-fit ​​groove (12) is slidably connected with a snap-fit ​​ball (27). The inner ring of the slot (5) is slidably connected inside the outer shell 1 (1). The outer ring of the slot (5) is slidably connected with a spring-type outer shell (6). The right end of the spring-type outer shell (6) is fixedly connected with a spring 1 (7). The right end of the spring 1 (7) is fixedly connected with an outer shell 2 (8). The left end of the outer shell 1 (1) is fixedly connected with a flow regulating component.

2. The mechanically adjustable sealing device according to claim 1, characterized in that: The flow regulating assembly includes a regulator (17), the right end of which is fixedly connected to the left end of the outer casing (1), a flow limiting shell (18) is fixedly connected inside the regulator (17), a rotating rod (21) is rotatably connected inside the flow limiting shell (18), a rotating plate holder (22) is fixedly connected to the bottom of the rotating rod (21), a flow rotating plate (23) is fixedly connected inside the rotating plate holder (22), and a round shaft (24) is rotatably connected to the flow rotating plate (23).

3. The mechanically adjustable sealing device according to claim 1, characterized in that: The outer surface of the spring-loaded outer shell (6) is provided with a limiting groove (16), and the outer surface of the limiting groove (16) is in contact with the outer surface of the snap ball (27).

4. The mechanically adjustable sealing device according to claim 1, characterized in that: The inner ring tube three (4) is fixedly connected inside the elastic shell (6), and the outer side of the inner ring tube three (4) is slidably connected inside the inner ring tube one (2).

5. The mechanically adjustable sealing device according to claim 1, characterized in that: The outer shell (1) has an extrusion groove (15) on its exterior, and an extrusion ball (11) is slidably connected inside the extrusion groove (15).

6. The mechanically adjustable sealing device according to claim 2, characterized in that: The rotating rod (21) is externally fixedly connected to a rotating rod (20), and the rotating rod (20) is internally fixedly connected to a moving rod (19).

7. The mechanically adjustable sealing device according to claim 6, characterized in that: The movable rod (19) is slidably connected to an arc groove (26), and the regulator (17) is rotatably connected to a rotating shell (25), with an arc groove (26) inside the rotating shell (25).

8. The mechanically adjustable sealing device according to claim 5, characterized in that: The compression ball (11) is externally fixedly connected to a spring two (10), and the spring two (10) is fixedly connected to a shell three (9).

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