A valve core hydraulic mechanical closing device

Abstract

This invention relates to the field of valve core control equipment technology, specifically to a valve core hydraulic mechanical closing device, comprising a cylinder body, wherein the cylinder body is provided with a first storage chamber and a second storage chamber, one end of the first storage chamber and the second storage chamber are connected, and the other end is respectively provided with a first sealing element and a second sealing element, and a crimping sleeve is provided at the connection between the first storage chamber and the second storage chamber; the first storage chamber is provided with a power assembly that provides driving force to the crimping sleeve, and the second storage chamber is provided with a valve core that cooperates with the crimping sleeve. The power assembly drives the crimping sleeve to perform crimping operations on the valve core. The power assembly uses multiple driving methods such as mechanical and hydraulic to complete the operation, which can be selected and used to adapt to different products, equipment and working conditions, or both can be used simultaneously to provide power for the crimping operation, which can ensure the stable completion of the crimping operation and avoid jamming during operation.

Description

Technical Field

[0001] This invention relates to the field of valve core control equipment technology, and specifically to a valve core hydraulic mechanical closing device. Background Technology

[0002] The valve core is a core component of fluid control equipment such as hydraulic valves and pneumatic valves. The quality of its end-face finishing directly determines the valve core's assembly accuracy, sealing performance, and overall operational stability. Currently, traditional valve core finishing methods mostly employ mechanical stamping, manual extrusion, or simple hydraulic forming, which introduce numerous defects during the processing.

[0003] Traditional processing equipment has a simple structural design and poor forming and positioning accuracy. During the valve core closing process, problems such as displacement, deformation, and uneven closing are prone to occur, which seriously affects the product qualification rate of valve cores. At the same time, existing equipment lacks a precise guiding and limiting structure, resulting in uneven force during closing and forming, which can easily lead to wear on the valve core surface and misalignment of steel balls, failing to meet the batch processing requirements of high-precision valve cores. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a valve core hydraulic mechanical crimping device. The device utilizes a power assembly to drive a crimping sleeve to perform crimping operations on the valve core. The power assembly employs multiple drive methods, including mechanical and hydraulic, allowing for selective use to suit different products, equipment, and operating conditions. Alternatively, both methods can work simultaneously to provide power for the crimping operation, ensuring stable completion of the crimping process and preventing jamming during operation. This improves operational efficiency while maintaining production quality.

[0005] To achieve the above objectives, the present invention employs the following technical solution: a valve core hydraulic mechanical closing device, comprising a cylinder body, wherein a storage cavity one and a storage cavity two are provided within the cylinder body, one end of the storage cavity one and the storage cavity two are connected, and the other end is respectively provided with a sealing element one and a sealing element two, and a crimping sleeve is provided at the connection between the storage cavity one and the storage cavity two; a power assembly providing driving force to the crimping sleeve is provided in the storage cavity one, and a valve core that cooperates with the crimping sleeve is provided in the storage cavity two.

[0006] As a further improvement to the above technical solution:

[0007] The middle part of the crimped sleeve is provided with a plug hole for inserting the valve core, the end of the plug hole is provided with a spherical guide chamber, and the top of the spherical guide chamber is provided with an exhaust hole that communicates with the storage cavity.

[0008] The valve core has a groove at its top, and a guide ramp that works in conjunction with a spherical guide chamber is provided on the outer wall of the groove. A steel ball is placed inside the groove.

[0009] The groove and the vent hole are coaxially distributed, and the diameter of the steel ball is larger than the diameter of the vent hole.

[0010] The second storage cavity is provided with an oil-passing support ring 2 located below the snap-fit ​​sleeve at one end, and an overflow annular groove 2 is provided at the lower end of the second storage cavity.

[0011] The powertrain includes a piston block that is slidably disposed in a storage cavity, a first drive device is disposed on the piston block, and a second drive device is disposed on the side wall of the storage cavity.

[0012] The drive device includes a transmission rod, one end of which is connected to the piston block, and the other end extends to the outside of the seal.

[0013] The sealing element includes a sealing cover plate, the sealing cover plate having a through hole in the middle for the transmission rod to pass through, and a sealing element being provided on the inner side wall of the through hole.

[0014] The second drive device includes an oil inlet and an oil return outlet. The first storage cavity is provided with an oil-passing annular groove communicating with the oil return outlet, and an oil-passing support ring is provided in the oil-passing annular groove.

[0015] The second sealing element includes a screw plug, and the cylinder end is provided with a threaded hole for installing the screw plug. A protective gasket is provided in the threaded hole between the screw plug and the valve core.

[0016] The beneficial effects of this invention are as follows: The valve core hydraulic mechanical closing device includes a cylinder body, in which a storage cavity one and a storage cavity two are provided. One end of the storage cavity one and the storage cavity two are connected, and the other end is respectively provided with a sealing element one and a sealing element two. A pressing sleeve is provided at the connection between the storage cavity one and the storage cavity two. The storage cavity one is provided with a power assembly that provides driving force to the pressing sleeve. The storage cavity two is provided with a valve core that works in conjunction with the pressing sleeve. The power assembly drives the pressing sleeve to perform a pressing operation on the valve core. The power assembly uses multiple driving methods such as mechanical and hydraulic to complete the operation. One method can be selected for use to adapt to different products, equipment and working conditions. Alternatively, both methods can be used simultaneously to provide power for the pressing operation, ensuring stable completion of the pressing operation and avoiding jamming during operation. Both seals 1 and 2 are detachably connected to the cylinder body. Together with storage chambers 1 and 2, they complete the modular design of the equipment, making maintenance and replacement more convenient in the later stages. In addition, a channel for valve core insertion and an exhaust hole are opened in the crimping sleeve. Together with the external inherent support ring, they complete the crimping operation, which can improve the stability of the operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the structure of the clamping molding sleeve in this invention; Figure 4 This is a schematic diagram of the valve core structure in this invention; Figure 5 This is a cross-sectional view of the valve core in this invention; Figure 6 This is a schematic diagram of the structure of the oil-supporting ring 1 in this invention.

[0018] In the diagram: 1. Cylinder body; 2. Storage chamber one; 3. Storage chamber two; 4. Seal one; 5. Seal two; 6. Press-fit sleeve; 7. Valve core; 8. Insertion hole; 9. Spherical guide chamber; 10. Exhaust port; 11. Groove; 12. Guide ramp; 13. Steel ball; 14. Oil passage support ring two; 15. Flow passage annular groove two; 16. Piston block; 17. Drive rod; 18. Sealing cover plate; 19. Through hole; 20. Sealing ring; 21. Oil inlet; 22. Oil return port; 23. Oil passage annular groove one; 24. Oil passage support ring one; 25. Plug; 26. Threaded hole; 27. Protective gasket. Detailed Implementation

[0019] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] like Figure 1-6 As shown, this embodiment provides a valve core hydraulic mechanical closing device, including a cylinder body 1, with an integrally formed storage cavity 2 and a storage cavity 3 inside. Storage cavity 2 is located at the upper part, and storage cavity 3 is located at the lower part. The bottom end of storage cavity 2 and the top end of storage cavity 3 are interconnected to form a through-type processing cavity structure. A sealing element 4 is installed at the top opening of storage cavity 2, and a sealing element 5 is installed at the bottom opening of storage cavity 3 to achieve sealing at both ends of the cavity and prevent hydraulic oil leakage. A crimping sleeve 6 is installed at the connection between storage cavity 2 and storage cavity 3 to complete the crimping closing operation of valve core 7.

[0021] The power assembly is installed inside the storage cavity 2. The power assembly can slide up and down along the inner wall of the storage cavity 2, thereby driving the crimping sleeve 6 to move and apply pressure to the valve core 7. The valve core 7 is vertically installed inside the storage cavity 3. The top of the valve core 7 is set with the crimping sleeve 6 and precisely cooperates with the crimping sleeve 6 to complete the crimping operation of the valve core.

[0022] A vertical insertion hole 8 is vertically formed at the center of the crimping sleeve 6. The insertion hole 8 is used for vertically inserting the positioning valve core 7 to achieve precise assembly and positioning of the valve core 7. A spherical guide chamber 9 is integrally formed at the top of the insertion hole 8. The spherical guide chamber 9 adopts an arc-shaped spherical structure, which has strong guiding adaptability. An exhaust hole 10 is formed at the center of the top of the spherical guide chamber 9. When the piston applies downward pressure to the valve core, it performs oil discharge or air discharge operations to avoid obstructing the downward movement of the crimping sleeve and making it unfavorable for pressure holding and molding.

[0023] A circular groove 11 is formed at the center of the top of the valve core 7. An inclined guide ramp 12 is machined on the outer wall of the groove 11. The curvature of the guide ramp 12 matches the spherical curvature of the spherical guide chamber 9, ensuring a close fit and precise guidance during the assembly and forming process of the valve core 7, preventing radial offset. Simultaneously, the spherical guide chamber helps the guide ramp to contract inward, completing the pressing and forming of the steel ball. A steel ball 13 is placed inside the groove 11. The groove 11 and the vent hole 10 at the top are coaxially distributed to ensure uniform force distribution. The diameter of the steel ball 13 is larger than the inner diameter of the vent hole 10, and its top extends above the groove 11, ensuring that the guide ramp 12 can contract inward after forming, completing the pressing and forming process. When the steel ball 13 contacts the vent hole 10, it seals the vent hole during the venting process and also limits the downward movement of the pressing and forming sleeve, preventing excessive compression and damage to the ball head.

[0024] An oil-passing support ring 14 is installed at the upper end of the storage cavity 3. The oil-passing support ring 14 is located directly below the crimping sleeve 6 and can provide vertical support and limit the crimping sleeve 6 without affecting the flow of hydraulic oil. An annular groove 15 is formed on the lower side wall of the storage cavity 3 for the circulation of hydraulic oil.

[0025] The powertrain includes a piston block 16, which is sealed and slidably mounted inside the storage cavity 2. It can slide vertically along the inner wall of the storage cavity 2 to apply pressure to the valve core 7. The piston block 16 is equipped with a first drive unit, and the side wall of the storage cavity 2 is equipped with a second drive unit. This dual drive unit design allows for both mechanical and hydraulic transmission, enabling the selective use of multiple drive forces to adapt to different types of equipment and improve the overall equipment's adaptability.

[0026] The drive unit includes a transmission rod 17. One end of the transmission rod 17 is connected to the piston block 16, and the other end passes through the seal 4 and extends to the outside of the cylinder 1. The transmission rod 17 can be pulled or pushed by an external drive component to drive the piston block 16 to slide vertically, thereby realizing mechanical power drive.

[0027] The sealing element 4 includes a sealing cover plate 18, which is bolted to the top of the cylinder body 1 to seal the top opening of the storage cavity 2. A through hole 19 is provided at the center of the sealing cover plate 18 for mounting the transmission rod 17. A sealing ring 20 is fixedly mounted on the inner wall of the through hole 19, and the sealing ring 20 fits tightly against the outer wall of the transmission rod 17, effectively sealing the gap between the transmission rod 17 and the through hole 19, preventing hydraulic oil from leaking from the top gap, and ensuring the cavity's sealing performance.

[0028] The second drive unit includes an oil inlet 21 and an oil return port 22 located on the side wall of the storage cavity 2. The oil inlet 21 is used to connect to an external hydraulic oil supply device to input hydraulic oil into the storage cavity 2, and the oil return port 22 is used for hydraulic oil return and pressure relief. An oil-passing annular groove 23 is formed on the inner wall of the storage cavity 2. The oil-passing annular groove 23 communicates with the oil return port 22. An oil-passing support ring 24 is embedded inside the oil-passing annular groove 23. The oil-passing support ring 24 can strengthen the structural strength of the cavity side wall, while regulating the hydraulic oil flow path, avoiding oil circuit disorder, and ensuring stable oil pressure transmission.

[0029] The second sealing element 5 includes a screw plug 25. A threaded hole 26 is provided at the center of the bottom end of the cylinder body 1. The screw plug 25 is screwed into the threaded hole 26 to achieve a seal at the bottom of the storage cavity 3. A protective gasket 27 is placed inside the threaded hole 26. The protective gasket 27 is located between the top of the screw plug 25 and the bottom of the valve core 7. It can effectively isolate the screw plug 25 from the valve core 7, prevent wear on the end face of the valve core 7 during the tightening of the screw plug 25, and also play a buffering and sealing auxiliary role. At the same time, the use of the screw plug 25 for sealing also allows for quick disassembly, installation and replacement of the valve core without replacing the entire drive assembly. Only the screw plug needs to be removed to replace the valve core. During replacement, the spherical storage cavity and the through channel can be used to guide the equipment and prevent axial deviation during valve core replacement.

[0030] If a different model of valve core is replaced (i.e., the diameter of the valve core or the size of the ball head changes), the sealing component can be disassembled after the valve core is replaced. After disassembly, the piston block is removed, and then the crimped sleeve is replaced with one that matches the size of the valve core. The whole equipment is easy to replace and debug.

[0031] The oil-passing support ring 24 and the oil-passing support ring 14 have similar structures. One end of both rings has a chamfered edge, and the other end has multiple oil-passing channels on the extension plate. In this embodiment, four channels are preferred and are evenly distributed along the circumference. They are placed in the flow-passing annular groove 1 and the flow-passing annular groove 2, respectively. The flow-passing annular groove 1 and the flow-passing annular groove 2 are annular in design, which facilitates the overall machining of the cylinder body. They also cooperate with the oil-passing channels on the oil-passing support ring 24 and the oil-passing support ring 14 to limit the extreme values ​​of the piston and valve core at the bottom (i.e., the maximum downward movement), so as to avoid damage to the equipment due to excessive downward movement. They also ensure that the fluid passes through smoothly and completes the circulation. Together with the limiting of the steel ball and the exhaust hole, they form a multi-limiting structure to ensure the smooth completion of the crimping and forming operation and to avoid jamming.

[0032] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0035] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A valve core hydraulic mechanical closing device, comprising a cylinder (1), characterized in that, The cylinder (1) is provided with a storage cavity one (2) and a storage cavity two (3). One end of the storage cavity one (2) and the storage cavity two (3) are connected, and the other end is provided with a sealing element one (4) and a sealing element two (5). A snap-fit ​​sleeve (6) is provided at the connection between the storage cavity one (2) and the storage cavity two (3). The storage cavity one (2) is equipped with a power assembly that provides driving force to the crimping sleeve (6), and the storage cavity two (3) is equipped with a valve core (7) that works in conjunction with the crimping sleeve (6).

2. The valve core hydraulic mechanical retraction device according to claim 1, characterized in that, The middle part of the snap-fit ​​sleeve (6) is provided with a plug hole (8) for inserting the valve core (7), the end of the plug hole (8) is provided with a spherical guide chamber (9), and the top of the spherical guide chamber (9) is provided with an exhaust hole (10) communicating with the storage cavity (2).

3. The valve core hydraulic mechanical closing device according to claim 2, characterized in that, The top of the valve core (7) is provided with a groove (11), and the outer wall of the groove (11) is provided with a guide ramp (12) that works in conjunction with the spherical guide chamber (9). A steel ball (13) is provided inside the groove (11).

4. The valve core hydraulic mechanical closing device according to claim 3, characterized in that, The groove (11) and the vent (10) are coaxially distributed, and the diameter of the steel ball (13) is larger than the diameter of the vent (10).

5. The valve core hydraulic mechanical retraction device according to claim 1, characterized in that, The end of the storage cavity 2 (3) is provided with an oil-passing support ring 2 (14) located below the snap-fit ​​sleeve (6), and the lower end of the storage cavity 2 (3) is provided with an overflow annular groove 2 (15).

6. The valve core hydraulic mechanical closing device according to claim 1, characterized in that, The powertrain includes a piston block (16) slidably disposed in a storage cavity (2), a drive device (1) is disposed on the piston block (16), and a drive device (2) is disposed on the side wall of the storage cavity (2).

7. The valve core hydraulic mechanical retraction device according to claim 6, characterized in that, The drive device includes a transmission rod (17), one end of which is connected to the piston block (16), and the other end extends to the outside of the seal (4).

8. The valve core hydraulic mechanical closing device according to claim 7, characterized in that, The sealing element (4) includes a sealing cover plate (18), and the sealing cover plate (18) has a through hole (19) in the middle for the transmission rod (17) to pass through. A sealing ring (20) is provided on the inner side wall of the through hole (19).

9. The valve core hydraulic mechanical closing device according to claim 8, characterized in that, The second drive device includes an oil inlet (21) and an oil return port (22). The first storage cavity (2) is provided with an oil-passing annular groove (23) communicating with the oil return port (22). An oil-passing support ring (24) is provided in the oil-passing annular groove (23).

10. The valve core hydraulic mechanical closing device according to claim 1, characterized in that, The second sealing element (5) includes a screw plug (25), and the cylinder body (1) has a threaded hole (26) for installing the screw plug (25) at its end. A protective gasket (27) is provided in the threaded hole (26) between the screw plug (25) and the valve core (7).

Images