A valve core sleeve

Abstract

This utility model discloses a valve core sleeve, including an outer sleeve and a main sleeve. The outer sleeve has a sleeve cavity and a mating cavity. The main sleeve is inserted into the outer sleeve through a pin. The pin has a convex key ridge that mates with the keyway of the outer sleeve to achieve limited rotation. A locking plug is connected to the top of the pin. The locking plug contains a magnetic ball, an elastic element, and multiple locking protrusions. A ball through hole is opened on the surface of the locking plug for leading the locking protrusions out and locking them into the mating cavity after insertion. The magnetic ball is used for magnetically attracting and positioning the locking protrusions. The structure also includes a quick-connect interface and a bottom screw hole, which are used for connecting the actuator and mating with the valve core shaft, respectively. This structure can achieve quick insertion, stable locking, and convenient release between the main sleeve and the outer sleeve. It is suitable for various manual or electric actuators and has the advantages of quick installation, reliable use, and efficient disassembly.

Description

Technical Field

[0001] This utility model relates to the field of valve body structure technology, specifically a valve core sleeve. Background Technology

[0002] As a key component in hydraulic, pneumatic, or various fluid control systems, the valve core's connection structure is crucial for achieving efficient actuation, stable sealing, and component interchangeability. Currently, the widely used valve core connection methods mainly include threaded screw connections, pin connections, or snap ring connections. While these structures meet basic connection requirements to some extent, they still have many shortcomings in terms of quick insertion, stable locking, and reusability.

[0003] Currently, most valve core shafts are assembled with actuators using traditional threaded connections. While this structure has a mature manufacturing process, it suffers from the following typical problems:

[0004] The connection process requires repeated tightening, and the disassembly and assembly operations are time-consuming and lack quick replacement capability, especially inconvenient to operate in confined installation spaces; the threaded connection has high requirements for the alignment of the center axis, and the initial docking is prone to misalignment, affecting assembly accuracy and reliability; under frequent opening and closing or vibration conditions, the threads are prone to loosening or wear, reducing sealing performance and transmission stability; more importantly, this structure cannot achieve quick switching between the valve core and different types of actuators (such as manual knobs, electric actuators, etc.), which seriously restricts the modular compatibility and maintenance efficiency of the system.

[0005] In addition, although some pin-type or snap-on structures have certain quick connection characteristics, most of them rely on external retaining rings or spring structures. Their locking force is greatly affected by tolerance, making it difficult to achieve reliable limiting. Furthermore, their service life is limited, and problems such as jamming or locking ball failure are prone to occur during disassembly and assembly.

[0006] Therefore, there is a lack of a valve core connection structure in the existing technology that is compact, has high efficiency in plug-in connection, can flexibly switch between manual and electric actuation modes, and has both self-locking and quick disengagement functions, and urgently needs to be improved and optimized. Utility Model Content

[0007] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0008] Therefore, the technical solution adopted by this utility model is as follows: a valve core sleeve, including an outer sleeve and a main sleeve, wherein the outer sleeve is provided with a sleeve cavity and a connecting cavity, and a connecting protrusion is provided between the two to form a plug-in stop for positioning; a plug head is connected to the top surface of the main sleeve, and a locking plug is fixedly connected to the top of the plug head. The internal structure of the locking plug is provided with a magnetic ball, an elastic element and multiple locking protrusions, and multiple ball through holes are opened on the surface of the locking plug. A top cover is provided on the top surface for sealing the structure; multiple protruding key ridges are provided on the outer surface of the plug head, which cooperate with the keyway provided in the inner wall of the sleeve cavity of the outer sleeve to realize the plug-in guidance and synchronous rotation of the main sleeve and the outer sleeve.

[0009] In a preferred embodiment, the ball through hole and the locking ball are arranged in a one-to-one correspondence, and both the locking ball and the elastic element are ferromagnetic components. The locking ball is stably attracted to the outlet of the ball through hole by the magnetic attraction of the magnetic ball. After the insertion is completed, it actively extends and is locked into the inner wall of the joint cavity, thereby realizing the automatic locking of the structure.

[0010] Specifically, this structure can improve the reliability of the locking process, prevent the locking ball from loosening due to vibration or displacement, and improve safety and lifespan.

[0011] In a preferred embodiment, the inner diameter of the sleeve cavity is adapted to the insertion head to achieve stable insertion of the insertion head; the inner diameter of the engagement protrusion is equal to the outer diameter of the locking plug to ensure that the locking plug can pass smoothly through the engagement cavity and ensure a smooth assembly process.

[0012] Specifically, this size-fitting structure can significantly reduce insertion resistance and improve component positioning accuracy.

[0013] In a preferred embodiment, the inner diameter of the ball through hole is less than or equal to the diameter of the locking ball, so that the locking ball can only be extended under stress, preventing it from falling out uncontrollably and ensuring structural safety.

[0014] Specifically, this limiting structure can effectively restrict the range of motion of the locking ball, ensuring locking accuracy.

[0015] In a preferred example, the outer sleeve is further configured such that a quick-connect interface is provided at the top for connecting a valve core actuator assembly, including a manual knob, an electric actuator, or a servo actuator, to achieve rotational control of the valve core shaft.

[0016] Specifically, this fast interface is compatible with multiple driver structures, improving system versatility and modular replacement efficiency.

[0017] In a preferred embodiment, the insertion head and the sleeve cavity are further configured as follows: the locking ball is radially retracted into the inner side of the locking head by the inclined surface of the insertion head during the insertion process. After the insertion is completed, the elastic element pushes the magnetic ball upward and pushes the locking ball out of the ball through hole and stops in the joint cavity, forming a stable lock.

[0018] Specifically, the process achieves full-process control with automatic guidance, automatic retraction, and automatic locking, greatly improving the convenience and practicality of the structure.

[0019] In a preferred embodiment, the outer sleeve is further configured such that the bottom surface of the outer sleeve has a screw hole structure for fixing with the valve core shaft, thereby ensuring the installation strength and coaxial accuracy of the entire valve core assembly during operation.

[0020] Specifically, this bottom connection method is simple and reliable, and is suitable for the mechanical integration needs of various system platforms.

[0021] In summary, this utility model forms a complete quick-connect and locking system through the guiding fit between the insert head and the sleeve cavity, the radial locking structure of the locking ball, the magnetic limit design, and the unified layout of the quick-connect interface. This significantly improves the operational efficiency, safety, and adaptability of the valve core assembly during installation, maintenance, and replacement. It is particularly suitable for fluid control system scenarios that require high-frequency replacement or have electric / manual switching functions.

[0022] The beneficial effects achieved by this utility model are as follows:

[0023] 1. In this utility model, the main sleeve base forms an insertion structure between the insert head and the outer sleeve. The convex key ridge on the surface of the insert head cooperates with the keyway inside the sleeve cavity, realizing automatic guidance and limiting during insertion, and ensuring the synchronous rotation function after insertion is completed, effectively improving the stability of the structural connection and the mechanical consistency during use.

[0024] 2. In this utility model, the locking plug adopts a composite locking structure of ball through hole + locking protrusion ball + elastic element + magnetic ball. After being inserted into place, it can automatically push the locking protrusion ball radially out and lock into the engagement cavity, thereby achieving rapid locking. Through the magnetic attraction of the magnetic ball to the locking protrusion ball, the locking ball is further prevented from loosening or falling out, ensuring a stable and reliable locking process. When the outer sleeve is subjected to a pull-out force, the engagement protrusion can trigger the locking protrusion ball to retract, achieving automatic disengagement, which has good connection reliability and convenient disassembly. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0026] Figure 2 This is an exploded structural diagram of one embodiment of the present invention;

[0027] Figure 3 This is a cross-sectional structural diagram of the connection state between the valve core shaft and an embodiment of the present invention;

[0028] Figure 4This is an exploded view of the main sleeve structure according to an embodiment of the present invention.

[0029] Figure label:

[0030] 100. Outer sleeve; 110. Sleeve cavity; 120. Joint cavity; 130. Joint protrusion;

[0031] 200. Main socket; 210. Insert pin; 220. Locking plug; 230. Magnetic ball; 240. Locking protruding ball; 250. Elastic element; 211. Protruding keyway; 221. Top cover; 222. Ball through hole;

[0032] 300. Valve core shaft. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0034] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0035] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a valve core sleeve.

[0036] Combination Figures 1-4 As shown, the present invention provides a valve core sleeve, including an outer sleeve 100 and a main sleeve seat 200, for realizing quick connection, stable locking and convenient release between the valve core shaft 300 and the actuator.

[0037] The outer sleeve 100 has a hollow cylindrical structure, and its interior is provided with a sleeve cavity 110 and a joint cavity 120 from top to bottom. A ring-shaped step is formed between the sleeve cavity 110 and the joint cavity 120, which serves as a joint protrusion 130. Several keyways are formed on the inner wall of the sleeve cavity 110 along the axial direction for mating with the insertion head 210 of the main sleeve 200.

[0038] The main sleeve 200 is an axial insertion structure, with an insert head 210 integrally formed on its top surface. The insert head 210 is a hollow cylindrical structure, and its outer surface is provided with several axially extending convex key ridges 211, which can be inserted and matched with the keyway inside the outer sleeve 100 to ensure the stability of the insertion direction and subsequent synchronous rotation linkage.

[0039] The top of the insertion head 210 is fixedly connected to a locking plug 220. The locking plug 220 is a hollow, closed structure with several ball-holes 222 evenly distributed on its outer surface. The inner diameter of the ball-holes 222 is less than or equal to the diameter of the locking ball 240 to prevent the locking ball 240 from falling off uncontrollably. The top of the locking plug 220 is fixedly connected to a top cover 221, forming a closed structure to prevent internal components from falling out.

[0040] The locking plug 220 contains a magnetic ball 230, an elastic element 250, and several locking protrusions 240. The magnetic ball 230 is located at the axial center of the locking plug 220, above the elastic element 250. The elastic element 250 is a compression spring or elastic washer structure, located between the locking protrusions 240 and the magnetic ball 230, and is used to apply an upward pushing force to the magnetic ball 230. The number of locking protrusions 240 corresponds one-to-one with the number of ball through holes 222, and they are all made of ferromagnetic material so that they are magnetically attracted and stabilized by the magnetic ball 230 after insertion, preventing loosening or detachment.

[0041] During assembly, as shown in the figure, the main sleeve 200 is inserted from the top of the outer sleeve 100. The insert head 210 first enters the sleeve cavity 110, and its convex key 211 engages with the keyway to achieve insertion guidance and rotation limit. After the insert head 210 is fully inserted, the locking plug 220 passes through the engaging protrusion 130 and enters the engaging cavity 120. During the insertion process, the outer walls of the insert head 210 and the locking plug 220 are provided with tapered guide surfaces, which can push the locking protrusion ball 240 radially inward during the insertion process, compress the elastic element 250 and cause it to retract into the interior of the locking plug 220, forming a temporary interference fit.

[0042] Once the locking plug 220 is fully inserted into the engagement cavity 120 and the ball-hole 222 is aligned with the locking area on the inner wall of the engagement cavity 120, the elastic element 250 pushes the magnetic ball 230 upward under the action of the restoring force. The magnetic ball 230 then pushes the locking protrusion 240 to the outside of the ball-hole 222, where it is engaged in the inner wall of the engagement cavity 120, thus completing the mechanical locking. At the same time, the magnetic ball 230 uses magnetic attraction to hold the locking protrusion 240 in place at the edge of the ball-hole 222, preventing it from loosening due to vibration or torsion.

[0043] After locking, the valve core can be connected to various valve core actuators, including but not limited to manual turntables and electric servo motors, through the quick-connect interface at the top of the outer sleeve 100, to achieve rotation control of the valve core shaft 300, thereby driving the valve core to perform opening and closing operations.

[0044] When the main sleeve 200 needs to be disassembled, an axial pull-out force can be applied to the top of the outer sleeve 100 to make the engaging protrusion 130 contact the locking ball 240. Under the action of the relative axial force, the locking ball 240 is pressured back into the locking plug 220, while compressing the elastic element 250, thereby releasing the mechanical engagement with the engaging cavity 120 and realizing the rapid separation of the main sleeve 200 from the outer sleeve 100.

[0045] In addition, the bottom of the outer sleeve 100 is provided with a screw hole structure, which can be connected with the valve core shaft 300 to achieve overall structural fixation.

[0046] Working principle and usage process of this utility model:

[0047] This invention achieves quick insertion and connection, stable locking, and controllable disengagement of the valve core assembly through the structural cooperation between the main sleeve 200 and the outer sleeve 100. The specific working principle is as follows:

[0048] First, during installation, the main sleeve 200 is inserted into the sleeve cavity 110 inside the outer sleeve 100 via the insert head 210. The outer surface of the insert head 210 is provided with multiple raised keyways 211, which cooperate with the keyway provided on the inner side of the sleeve cavity 110, so that the main sleeve 200 can rotate synchronously with the outer sleeve 100 during insertion, preventing relative slippage.

[0049] As the insertion post 210 continues to penetrate deeper, the locking plug 220, which is fixedly connected to its top end, enters the engagement cavity 120 inside the outer sleeve 100. The locking plug 220 has several evenly spaced ball-and-socket holes 222 on its outer side, each containing several locking protrusions 240. The tapered structure at the top of the insertion post 210 and the locking plug 220 causes the locking protrusions 240 to retract radially into the locking plug 220, compressing the elastic element 250 to complete the insertion action.

[0050] When the locking plug 220 is introduced into the engagement cavity 120 through the engagement protrusion 130 on the inner side of the outer sleeve 100, after the locking ball 240 corresponds to the locking area on the inner wall of the engagement cavity 120, the elastic element 250 pushes the magnetic ball 230 to move axially upward, pushing the locking ball 240 to extend radially through the ball through hole 222, thereby firmly locking the main sleeve 200 in the outer sleeve 100; furthermore, under the magnetic attraction of the magnetic ball 230, the locking ball 240 is magnetically attracted and restricted to the inner side of the ball through hole 222, preventing the locking ball 240 from falling out.

[0051] After locking, the valve core actuator can be connected to the valve core shaft 300 via the quick-connect interface at the top of the outer sleeve 100 to control the rotation of the valve core shaft 300, thereby driving the valve core to perform opening and closing actions. This actuator can be a manually rotated structure, an electric drive device, or other forms.

[0052] When disassembly is required, simply apply an axial pulling force from the top of the outer sleeve 100. The engaging protrusion 130 will physically abut against the locking protrusion 240, causing the locking protrusion 240 to compress the elastic element 250 again after being subjected to force and retract into the locking plug 220, thereby releasing the locking relationship and realizing the rapid separation of the main sleeve 200 and the outer sleeve 100.

[0053] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A valve core sleeve, characterized in that, The device includes an outer sleeve (100) and a main sleeve (200). The inner side of the outer sleeve (100) is sequentially provided with a sleeve cavity (110) and a mating cavity (120). A mating protrusion (130) is provided between the sleeve cavity (110) and the mating cavity (120). A plug head (210) is connected to the top surface of the main sleeve (200), and a locking plug (220) is fixedly connected to the top of the plug head (210). The inner sides of the plug head (210) and the locking plug (220) are movably connected... It is equipped with a magnetic ball (230), an elastic element (250) and several locking protrusions (240); the top surface of the locking plug (220) is provided with a top cover (221), and several ball through holes (222) are opened on the surface of the locking plug (220); the outer surface of the insertion head (210) is provided with several protruding key ridges (211), and the inner side of the sleeve cavity (110) is provided with a keyway that matches the protruding key ridges (211), for the main sleeve (200) to be inserted into the outer sleeve (100) and rotate in linkage with it.

2. The valve trim sleeve of claim 1, wherein, The number of the ball through holes (222) and the number of locking protrusion balls (240) are arranged in a one-to-one correspondence. The locking protrusion balls (240) and the elastic element (250) are both ferromagnetic components used to magnetically adhere to the surface of the magnetic ball (230).

3. The valve trim sleeve of claim 1, wherein, The inner diameter of the sleeve cavity (110) is adapted to the insertion head (210) for insertion of the insertion head (210); the inner diameter of the engagement protrusion (130) is equal to the outer diameter of the locking plug (220) for the locking plug (220) to pass through the engagement protrusion (130) and be led to the inside of the engagement cavity (120).

4. The valve trim sleeve of claim 1, wherein, The inner diameter of the ball through hole (222) is less than or equal to the diameter of the locking ball (240), which is used to limit the exit of the locking ball (240).

5. The valve trim sleeve of claim 1, wherein, The top surface of the outer sleeve (100) is provided with a quick-connect interface for connecting with the valve core actuator assembly to realize the rotation drive of the valve core or valve core shaft.

6. The valve trim sleeve of claim 1, wherein, The inner wall of the sleeve cavity (110) and the top of the insertion head (210) are both tapered, which are used to push the locking ball (240) radially back into the inner side of the locking head (220) during the insertion of the locking plug (220).

7. The valve trim sleeve of claim 1, wherein, The bottom surface of the outer sleeve (100) is provided with a screw hole for connecting with the valve core shaft (300).

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