Split piston and angular seat valve actuator having the same

Abstract

This utility model relates to the field of valve component technology, and in particular to a split-type piston and an angle seat valve actuator having the same. The split-type piston includes: a first piston with a through hole at its geometric center; and a second piston with a through hole at its geometric center. The through hole is used to accommodate a piston rod. The inner diameter of the first piston is larger than the outer diameter of the second piston, so that the first piston covers the outer bottom of the second piston. This utility model, through its split-type piston structure with through holes at the geometric centers of both the first and second pistons, facilitates the accommodation of the piston rod. Compared with existing technologies, it avoids the problems of material waste, die-casting shrinkage cavities, and uneven wall thickness that exist in the bar processing or die-casting of directly integrated pistons, thus improving the stability of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of valve component technology, and in particular to a split piston and an angle seat valve actuator having the same. Background Technology

[0002] Angle seat valves are commonly used in automated fluid control systems, finding wide application in chemical, food, and pharmaceutical industries. They offer advantages such as rapid response, compact structure, and excellent sealing. The actuator, as the driving component, relies on the reciprocating motion of an internal piston to complete the opening and closing action. The piston's structural design directly affects the actuator's performance and lifespan.

[0003] In existing technologies, such as Figure 1 As shown, the piston of the angle seat valve actuator is mainly formed by two methods: direct machining from bar stock or die casting. Although bar stock machining provides structural stability, it suffers from significant material waste and long processing cycles. While die casting can reduce material loss, it commonly exhibits problems such as shrinkage cavities and uneven thickness.

[0004] Therefore, there is an urgent need for a split piston structure that can stamp the inner and outer components of the piston separately to improve the stability of the equipment. Utility Model Content

[0005] In view of at least one of the above technical problems, the present invention provides a split piston, which adopts a method of separately molding a first piston and a second piston to improve the stability of the equipment.

[0006] According to a first aspect of the present invention, a split-type piston is provided, comprising:

[0007] The first piston has a through hole at its geometric center;

[0008] The second piston has a through hole at its geometric center;

[0009] The through hole is used to fit the piston rod. The inner wall diameter of the first piston is larger than the outer wall diameter of the second piston, so that the first piston covers the outer bottom of the second piston.

[0010] In some embodiments of this invention, the first piston and the second piston are bowl-shaped.

[0011] In some embodiments of this utility model, the second piston is further provided with an extension edge, which extends horizontally along the upper edge of the second piston.

[0012] In some embodiments of this utility model, a plurality of gaskets are also included, wherein a through hole is provided at the geometric center of the gaskets.

[0013] In some embodiments of this invention, the gasket is disposed at the bottom of the outer wall of the first piston.

[0014] In some embodiments of this invention, the gasket is disposed at the bottom of the inner wall of the second piston.

[0015] In some embodiments of this utility model, the first piston, the second piston, and the gasket are fixed together by a nut.

[0016] In some embodiments of this utility model, the first piston, the second piston, and the gasket are all formed by a single stamping process.

[0017] In some embodiments of this invention, the second piston has a storage space for mounting a spring adapted to the piston rod.

[0018] According to another aspect of the present invention, an angle seat valve actuator is provided, comprising the aforementioned split piston.

[0019] The beneficial effects of this utility model are as follows: This utility model adopts a structure in which the first piston and the second piston are combined separately, and both have through holes at their geometric centers, which facilitates the installation of piston rods; compared with the prior art, it avoids the problems of material waste, die casting shrinkage cavities and uneven wall thickness that exist in the process of bar processing or die casting of direct one-piece pistons, and improves the stability of equipment use. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a cross-sectional view of the integral piston and the split piston in the angle seat valve actuator of this utility model embodiment;

[0022] Figure 2 This is a schematic diagram of the split piston in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the installation of the first piston and the second piston in an embodiment of this utility model;

[0024] Figure 4 This is a cross-sectional view showing the installation of the first piston and the second piston in an embodiment of this utility model;

[0025] Figure 5This is an exploded view of the first piston and the second piston in an embodiment of this utility model.

[0026] Explanation of reference numerals in the attached drawings: 1. First piston; 2. Second piston; 21. Extension edge; 22. Storage space; 3. Piston rod; 4. Gasket; 5. Through hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] like Figures 1 to 5 The split-type piston shown includes: a first piston 1 and a second piston 2. The first piston 1 has a through hole 5 at its geometric center; the second piston 2 also has a through hole 5 at its geometric center. The through hole 5 is used to accommodate a piston rod 3. The inner diameter of the first piston 1 is larger than the outer diameter of the second piston 2, so that the first piston 1 covers the outer bottom of the second piston 2. Figure 1 As shown, both the first piston 1 and the second piston 2 have through holes 5 at their geometric centers for fitting the piston rod 3. The first piston 1 covers the outer bottom of the second piston 2, thus forming a nested assembly structure. In this embodiment, the separate assembly of the first piston 1 and the second piston 2, with through holes 5 at their geometric centers, facilitates the fitting of the piston rod 3. Compared with the prior art, this avoids problems such as material waste, die-casting shrinkage cavities, and uneven wall thickness that exist in the bar processing or die-casting of directly integrated pistons, thus improving the stability of the equipment.

[0031] In this embodiment of the invention, the first piston 1 and the second piston 2 are bowl-shaped. In this embodiment, the bowl-shaped design itself has good stress characteristics, which helps to improve the overall strength of the equipment; secondly, the use of nested inner and outer bowl-shaped structures simplifies the connection method and improves assembly efficiency.

[0032] In an embodiment of this utility model, an angle seat valve actuator is also provided, including the aforementioned split piston. The second piston 2 is further provided with an extension edge 21, which extends horizontally along the upper edge of the second piston 2. Figures 2 to 5 As shown, the extension edge 21 extends horizontally along the upper edge of the second piston 2, forming an annular flange structure. The extension edge 21 maintains the compactness of the overall structure and also serves as a positioning or limiting structure for the sealing ring (not shown in the figure), confining the sealing ring between the extension edges 21 of the first piston 1 and the second piston 2. In this embodiment, the extension edge 21 can be formed in one step during stamping without additional processing, enhancing the operational stability of the entire angle seat valve actuator.

[0033] In embodiments of this utility model, a plurality of gaskets 4 are further included, with a through hole 5 provided at the geometric center of each gasket 4. For example... Figures 3 to 5 As shown, gasket 4 is disposed at the bottom of the outer wall of the first piston 1. Gasket 4 is disposed at the bottom of the inner wall of the second piston 2. Gasket 4, disposed at the bottom of the outer wall of the first piston 1 and the bottom of the inner wall of the second piston 2, serves as a supporting element for the upper and lower structures, ensuring the stability of the equipment during operation. In this embodiment, the through-hole 5 structure allows gasket 4 to be coaxially mounted with the piston rod 3, avoiding interference problems caused by eccentric wear or movement. Gasket 4 can also absorb impact and vibration to a certain extent, improving the reliability of the split piston.

[0034] In an embodiment of this utility model, the first piston 1, the second piston 2, and the gasket 4 are fixed together by a nut. Figures 2 to 5 As shown, after the first piston 1 and the second piston 2 are fitted onto the piston rod 3, they are axially locked together by a nut to form an integral connection structure. The nut-fixed connection method is simple to assemble, facilitating rapid and efficient batch assembly and improving production efficiency. In this embodiment, the nut-fixed assembly of the split components not only enhances structural safety but also makes the equipment practical.

[0035] In this embodiment of the invention, the first piston 1, the second piston 2, and the gasket 4 are all formed by a single stamping process. The first piston 1, the second piston 2, and the gasket 4 are formed by cold working the metal material using a mold, directly stamping them into the desired structural shape without the need for subsequent complex machining or secondary processing. This embodiment avoids defects such as shrinkage cavities and bubbles commonly found in die casting, thus improving product quality.

[0036] In an embodiment of this utility model, the second piston 2 has a storage space 22 for mounting a spring adapted to the piston rod 3. For example... Figures 1 to 3 As shown, the second piston 2 has a storage space 22 located inside the piston, used to accommodate and install the spring that cooperates with the piston rod 3. The storage space 22 is a recessed cavity structure, allowing the spring to be stably embedded within it, forming an elastic reset mechanism together with the piston rod 3 to realize the reset function of the actuator. In this embodiment, the storage space 22 and the second piston 2 are integrally stamped, requiring no additional processing, reducing manufacturing complexity and cost. Furthermore, the storage space 22 prevents the spring from shifting or jamming during operation, ensuring a smooth and reliable reset action.

[0037] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A split piston, characterized in that, include: The first piston has a through hole at its geometric center; The second piston has a through hole at its geometric center; The through hole is used to fit the piston rod. The inner wall diameter of the first piston is larger than the outer wall diameter of the second piston, so that the first piston covers the outer bottom of the second piston.

2. The split piston of claim 1, wherein The first piston and the second piston are bowl-shaped.

3. The split piston of claim 2, wherein, The second piston is also provided with an extension edge, which extends horizontally along the upper edge of the second piston.

4. The split piston of claim 1 wherein, It also includes several gaskets, each with a through hole at its geometric center.

5. The split piston according to claim 4, characterized in that, The gasket is disposed at the bottom of the outer wall of the first piston.

6. The split piston according to claim 4, characterized in that, The gasket is disposed at the bottom of the inner wall of the second piston.

7. The split piston according to claim 4, characterized in that, The first piston, the second piston, and the gasket are fixed together by a nut.

8. The split piston according to claim 4, characterized in that, The first piston, the second piston, and the gasket are all formed by a single stamping process.

9. The split piston according to claim 1, characterized in that, The second piston has a storage space for mounting a spring adapted to the piston rod.

10. An actuator for an angle seat valve, characterized in that, Including the split piston as described in claims 1-9.

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