An opening control member on a valve

Abstract

The utility model provides a kind of opening regulating member on control valve, including circular ring mounting ring, multiple teeth are equidistantly spaced and arranged on the circumference of mounting ring, the lower side of mounting ring is provided with clamping fixed part along its axial direction, clamping fixed part is provided with two and about the center of symmetry of mounting ring is arranged;The upper side of mounting ring is provided with recess, and steel ball that can roll is arranged in recess.It is installed on valve body, cooperates with valve rod to adjust and control the opening angle of valve core.Independent production and manufacture can be carried out, and the structure of valve body does not need to be transformed, so that the structure of valve body will not be damaged, the manufacturing difficulty is low, and the production cost is low.

Description

Technical Field

[0001] This utility model relates to the field of valve fittings technology, specifically to an opening adjustment component on a control valve. Background Technology

[0002] In the field of fluid transportation and control, ball valves, butterfly valves, and similar valves are widely used in various industries such as petroleum, chemical, water supply and drainage, and metallurgy. The core working principle of these valves is to drive the valve stem to rotate around its axis, causing the valve core (such as the ball in a ball valve or the disc in a butterfly valve) connected to the end of the stem to rotate synchronously. This changes the relative position of the valve core and the flow channel in the valve body, thereby achieving valve opening, closing, or flow regulation. The rotation angle of the valve stem directly determines the degree of valve core opening; therefore, to ensure that the valve can accurately control the flow or maintain a specific open state, the rotation angle of the valve stem must be reliably positioned.

[0003] Currently, the industry standard for positioning the valve stem opening angle generally involves installing a positioning structure on the valve body that mates with the valve stem. For example, some solutions involve machining protrusions, grooves, or limiting blocks at the valve stem mounting location on the valve body. These components, such as bosses or pins on the valve stem, create mechanical interference with the positioning structure on the valve body, thereby limiting the maximum rotation angle of the valve stem. However, all of these positioning methods require modifications or additional machining to the valve body's structure.

[0004] This type of positioning solution based on valve body modification has the following significant drawbacks: First, the structural integrity of the valve body is compromised.

[0005] Secondly, the processing is difficult and costly. Utility Model Content

[0006] In view of the problems pointed out in the background art, this utility model proposes an opening adjustment component on a control valve to solve the above-mentioned technical problems.

[0007] The technical solution of this utility model is implemented as follows: An opening adjustment component for a control valve includes an annular mounting ring with multiple teeth evenly spaced along its circumference. The lower side of the mounting ring has two clamping and fixing parts arranged symmetrically about the center of the mounting ring. The upper side of the mounting ring has a groove containing a rolling steel ball.

[0008] The present invention is further configured such that the groove is a hemispherical structure.

[0009] The present invention is further configured such that four grooves are provided and are spaced apart circumferentially on the mounting ring.

[0010] The present invention is further configured such that a limiting part protruding radially is provided on the outer side wall of the mounting ring, and limiting parts are respectively provided at both ends in the tooth setting direction.

[0011] The present invention is further configured such that the two limiting parts are symmetrically arranged about the center of the mounting ring.

[0012] The present invention is further configured such that, in the radial direction of the mounting ring, the length of the limiting portion is greater than the length of the teeth.

[0013] The present invention is further provided that the clamping and fixing part is provided with threaded holes that penetrate both sides thereon, and a pin is connected in the threaded hole.

[0014] The present invention is further configured such that the clamping and fixing part and the limiting part are positioned correspondingly.

[0015] The present invention is further configured such that the thickness of the clamping and fixing part gradually decreases from the middle to both sides.

[0016] By adopting the above technical solution, the beneficial effects of this utility model are as follows: The opening adjustment component on the control valve provided by this utility model is installed on the valve body and cooperates with the valve stem to adjust and control the opening angle of the valve core.

[0017] The regulating component of this application can be manufactured independently without modifying the structure of the valve body, thus avoiding damage to the valve body structure, reducing manufacturing difficulty and production cost.

[0018] The adjusting component of this application is installed on the valve body, which consists of a left valve body and a right valve body. The left and right valve bodies are connected to each other by flanges. The flanges of the left and right valve bodies are clamped and fixed between two clamping and fixing parts. The upper end of the valve stem passes through the adjusting component, and a handle is connected to the upper end of the valve stem. The valve stem is driven to rotate by the handle. A meshing part is hinged on the handle. The meshing part elastically abuts against the mounting ring and meshes with the teeth to restrict the rotation of the handle. When it is necessary to rotate the handle, the meshing part is disengaged from the teeth. After the rotation operation of the handle is completed, the disengagement of the meshing part is released. The meshing part resets under the action of elastic force and re-engages with the teeth to restrict the rotation of the handle and the valve stem.

[0019] The upper side of the mounting ring is provided with a rolling steel ball, which forms a rolling contact with the rotating handle, reducing the contact friction resistance between the handle and the mounting ring. 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 of 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 schematic diagram of the structure of the present invention. Figure 1 .

[0022] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0023] Figure 3 This is a schematic diagram of the structure of the regulating component of this utility model installed on the valve body.

[0024] The following are the labels in the attached diagram: 1. Mounting ring; 2. Tooth; 3. Clamping and fixing part; 4. Groove; 5. Steel ball; 6. Limiting part; 7. Threaded hole; 8. Pin. Detailed Implementation

[0025] 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.

[0026] For reference as follows Figures 1-3 The present invention will be described as follows: Example: An opening adjustment component on a control valve includes an annular mounting ring 1. The mounting ring is the basic load-bearing structure of the entire adjustment component. It adopts an annular design, and its inner diameter is adapted to the outer diameter of the valve stem to ensure that the valve stem can smoothly pass through the central hole of the mounting ring.

[0027] The mounting ring 1 has multiple teeth 2 spaced at equal intervals along its circumference (the number of teeth can be set according to the required opening angle accuracy of the valve).

[0028] The mounting ring 1 has a clamping and fixing part 3 along its axial direction on its lower side. There are two clamping and fixing parts 3, which are symmetrically arranged about the center of the mounting ring 1. The inner side of each clamping and fixing part forms a clamping fit with the side of the valve body flange in the thickness direction.

[0029] The upper side of the mounting ring 1 is provided with a groove 4, and a rolling steel ball 5 is provided in the groove 4. The curvature of the groove is adapted to the spherical curvature of the steel ball to accommodate the steel ball.

[0030] The installation process of this regulating component does not require any structural modification to the valve body. The specific steps are as follows: During the valve body assembly stage, when the left valve body and the right valve body are connected through the flange, align the two clamping and fixing parts of the regulating component with the flange connection of the left and right valve bodies, so that the flange is embedded in the clamping groove formed by the two clamping and fixing parts.

[0031] The upper end of the valve stem passes through the center hole of the mounting ring, and a handle is connected to the upper end of the valve stem. The lower side of the handle abuts against the steel ball.

[0032] The upper end of the valve stem is fixedly connected to the handle. A hinged engagement part, which rotates around the hinge point, is mounted on the handle. A spring is installed between the engagement part and the handle, providing elastic pressure to the engagement part towards the mounting ring. When adjusting the valve core opening angle, the operator moves the engagement part away from the mounting ring, disengaging it from the teeth on the mounting ring. At this point, rotating the handle causes the valve stem to rotate synchronously, which in turn drives the valve core to rotate, changing the relative position of the valve core and the valve body flow channel, thus achieving flow regulation. During this process, the lower surface of the handle contacts the steel ball on the upper side of the mounting ring. As the handle rotates, the steel ball rolls within the groove, converting the sliding friction between the handle and the mounting ring into rolling friction.

[0033] Once the valve core is adjusted to the target opening angle, the operator releases the lever on the engagement part. The engagement part resets under the elastic force of the spring and re-engages with the corresponding teeth on the mounting ring. Because the teeth match the tooth profile of the engagement part, engagement restricts the circumferential rotation of the handle, thereby limiting the rotation of the valve stem and keeping the valve core at the target opening angle. To adjust the angle again, repeat the "lever-rotate-release" operation.

[0034] As an independent component, the adjustment element relies on the original flange structure of the valve body for installation, eliminating the need for drilling, milling, or other machining on the valve body, thus fully preserving the original structural integrity of the valve body.

[0035] The components of the regulating element have simple structures and can be mass-produced using standardized processes such as stamping, injection molding (for non-metallic materials), or casting (for metallic materials). Machining precision is easy to control, resulting in a low scrap rate. Compared to machining the positioning structure onto the valve body, producing regulating elements independently eliminates the need for specialized large-scale machining equipment and complex tooling, shortening the production cycle and reducing the cost per unit.

[0036] The dimensions of the regulating component can be standardized according to the flange thickness and stem diameter of valves of different specifications. The regulating component of the same specification can be adapted to valves of the same type but from different manufacturers, which is highly versatile. When it is necessary to replace the valve stem or adjust the positioning accuracy, only the regulating component needs to be disassembled for operation, without processing the valve body, which greatly shortens the maintenance time and reduces the later maintenance cost.

[0037] The groove 4 is a hemispherical structure. The steel ball 5 is fitted and connected to the groove 4. The depth of the groove is equal to the radius of the steel ball, ensuring that after the steel ball is embedded in the groove, its top protrudes exactly 1 / 2 the diameter of the steel ball from the upper side of the mounting ring 1. This ensures reliable contact with the handle and prevents the steel ball from falling off due to excessive protrusion.

[0038] The groove 4 has four grooves spaced circumferentially around the mounting ring 1. This distribution ensures even support force during handle rotation, preventing tilting or wobbling caused by single-point contact.

[0039] The outer wall of the mounting ring 1 is provided with a limiting part 6 protruding radially therefrom, and the two ends of the tooth 2 are respectively provided with limiting parts 6 in the direction of setting. The limiting part 6 can be used to limit the extreme rotation angle of the handle. The limiting part 6 is a block structure, provided on the outer wall of the mounting ring 1, and protruding outward along the radial direction of the mounting ring. In the radial direction of the mounting ring 1, the length of the limiting part 6 (i.e., the protrusion height) is greater than the length of the tooth 2, usually 2-5mm longer than the tooth 2, to ensure that the limiting part can achieve the extreme angle limiting function.

[0040] Two limiting parts 6 are provided, located at both ends of the tooth 2 setting direction, and the two limiting parts are symmetrically distributed about the center of the mounting ring 1.

[0041] The core function of the limiting part 6 is to limit the extreme rotation angle of the handle, preventing the valve core from overtravel or the valve stem, teeth and other components from being damaged due to excessive rotation of the handle.

[0042] The clamping and fixing part 3 is provided with threaded holes 7 that pass through both sides, and pins 8 are connected inside the threaded holes 7. The pins 8 help to fix the mounting ring 1 to the valve body.

[0043] When the flanges of the left and right valve bodies are inserted between the two clamping and fixing parts 3, screw the pin 8 into the threaded hole 7 until the end of the pin is tightly abutted against the side of the flange. The clamping force between the pin and the flange further restricts the axial and radial displacement of the adjusting component, making the adjusting component and the valve body firmly fixed together. If the adjusting component needs to be disassembled, simply unscrew the pin in the reverse direction, making the operation convenient.

[0044] The threaded hole and pin mating structure overcomes the limitations of relying solely on the clamping groove and flange mating, making it particularly suitable for scenarios with high vibration or complex operating conditions. The pin's auxiliary fixing effectively prevents the adjusting component from loosening or shifting due to vibration, ensuring the reliability of angle positioning and limit functions. Furthermore, this structure is detachable, allowing for the reuse of the valve body and the maintenance and replacement of the adjusting component without affecting its functionality.

[0045] The clamping and fixing part 3 and the limiting part 6 are positioned correspondingly.

[0046] The thickness of the clamping and fixing part 3 gradually decreases from the middle to both sides, forming a wedge-shaped structure that is thicker in the middle and thinner at both ends. The thicker middle structure ensures that the core area where the clamping and fixing part contacts the flange has sufficient structural strength, preventing deformation due to excessive clamping force.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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. An opening control member for a valve, comprising a circular mounting ring having a plurality of teeth spaced equidistantly around the circumference of the ring, characterised in that: The mounting ring has two clamping and fixing parts on its lower side along its axial direction, and they are symmetrically arranged about the center of the mounting ring. The mounting ring has a groove on its upper side, and a rolling steel ball is provided in the groove.

2. An opening control member for a valve according to claim 1, wherein: The groove is a hemispherical structure.

3. An opening control member for a valve according to claim 1, wherein: The grooves are provided in four places and are spaced apart circumferentially on the mounting ring.

4. An opening control member for a valve according to claim 1, wherein: The outer wall of the mounting ring is provided with a limiting part that protrudes radially therefrom, and the two ends of the tooth setting direction are respectively provided with limiting parts.

5. An opening control member for a valve according to claim 4, wherein: The two limiting parts are symmetrically arranged about the center of the mounting ring.

6. An opening adjustment member for a control valve according to claim 4, wherein: In the radial direction of the mounting ring, the length of the limiting part is greater than the length of the tooth.

7. An opening adjustment member for a control valve according to claim 1, wherein: The clamping and fixing part is provided with threaded holes that pass through both sides, and a pin is connected inside the threaded hole.

8. An opening adjustment member for a control valve according to claim 5, wherein: The clamping and fixing parts and the limiting parts are positioned correspondingly.

9. An opening adjustment member for a control valve according to claim 1, wherein: The thickness of the clamping and fixing part gradually decreases from the middle to both sides.

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