Double-limiting anti-deviation sealing ball valve ball

Abstract

The utility model discloses a double -positioning anti -deviation sealing ball valve ball, relate to ball valve technical field. The utility model discloses a ball is established between the fixed base of valve stem, the top of ball is provided with the drive groove, and the bottom of valve stem is inserted with drive groove, the top fixed connection of fixed base limits the cover, the bottom of ball is provided with the second insertion slot, and the second insertion slot is inserted with the limit sleeve between the limit sleeve and inserts the limit shaft, the surface of drive groove is provided with first limit piece, the bottom of valve stem is provided with the first insertion slot, and first limit piece is inserted with the first insertion slot and is cooperated with the limit shaft and carries out double -positioning to ball. In the utility model, can form double -positioning to ball, and then improve the limiting effect to ball, prevent the rotation of ball and deviate rotation axis, and positioning head can keep always with the first insertion slot under the action of spring and be in contact with each other, thereby keep the limiting effect, prevent the precision caused by abrasion of long -time use.

Description

Technical Field

[0001] This utility model belongs to the field of ball valve technology, and in particular relates to the ball of a double-limit anti-deviation sealing ball valve. Background Technology

[0002] A ball valve is a type of valve that controls the flow of fluid by rotating a ball. Its core component is a ball with a through hole. When the ball rotates to its full position, the through hole aligns with the pipe, indicating full opening; when it is perpendicular, it is closed. Ball valves have advantages such as simple structure, good sealing performance, and low flow resistance, and are widely used in petroleum, chemical, and water treatment industries.

[0003] When the ball in a ball valve rotates, a limiting shaft is usually needed to limit its rotation axis to prevent leakage caused by deviation during rotation. Most existing limiting methods are single-axis limiting, which are prone to deviation after wear, affecting use. Therefore, a double-limit anti-deviation sealing ball valve ball is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a ball for a double-limit anti-deviation sealing ball valve, which solves the existing technical problems.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: The ball of the double-limit anti-deviation sealing ball valve includes: a ball disposed between the valve stem and the fixed seat, wherein the top of the ball is provided with a drive groove, and the bottom of the valve stem is inserted into the drive groove; A limiting sleeve is fixedly connected to the top of the fixed base. A second slot is provided at the bottom of the ball. A limiting shaft is inserted between the second slot and the limiting sleeve. A first limiting member is provided on the surface of the drive groove. A first slot is opened at the bottom of the valve stem. The first limiting member is inserted into the first slot and cooperates with the limiting shaft to perform double limiting on the ball. Through the cooperation of the first limiting member and the limiting shaft, double limiting can be formed on the ball, thereby improving the limiting effect on the ball and preventing the ball from deviating from the rotation axis when rotating.

[0006] As a further embodiment of this utility model, the first limiting member includes a positioning post, which is fixed to the surface of the drive groove. A guide rod is fixedly connected to the top of the positioning post, and a positioning head is slidably sleeved on the top of the guide rod. The positioning head and the top of the first slot are both conical and in contact. A spring is sleeved on the circumference of the guide rod, and the two ends of the spring abut against the positioning head and the positioning post respectively through spring seats. The positioning head can be set to move. Under the action of the spring, the positioning head can always keep in contact with the first slot, thereby maintaining the limiting function and preventing the decrease in accuracy caused by wear during long-term use.

[0007] As a further embodiment of this utility model, the top of the second slot and the surface of the fixed base are both fixedly connected with positioning cones, and the two positioning cones are respectively inserted into the top and bottom of the limiting shaft.

[0008] As a further improvement of this invention, the opposite ends of the two positioning cones are both cone-shaped.

[0009] As a further embodiment of this invention, the center lines of the first limiting member, the limiting shaft, and the positioning cone are the same as the rotation axis of the sphere.

[0010] As a further improvement of this utility model, a sealing ring is provided around the circumference of the limiting sleeve.

[0011] As a further embodiment of this utility model, the guide rod is integrally formed with a guide strip for guiding the positioning head.

[0012] In this application, the limiting shaft is inserted into the second slot below the ball, and then the fixing seat is fixed to the bottom of the ball valve. At this time, the bottom of the limiting shaft is inserted into the limiting sleeve, thereby limiting the rotation of the ball and preventing the ball from deviating from the rotation axis when rotating. At the same time, when the valve stem is inserted into the drive groove, the first slot at the bottom of the valve stem is inserted into the positioning head and positioning pin. Under the action of the spring, the positioning head can always keep in contact with the first slot, thereby maintaining the limiting function and preventing the reduction of accuracy due to wear after long-term use.

[0013] The embodiments of this utility model have the following beneficial effects: In this utility model, the combined use of the first limiting member and the limiting shaft enables double limiting of the ball, thereby improving the limiting effect of the ball and preventing the ball from deviating from the rotation axis when rotating. In this invention, the positioning head can be set to move. Under the action of the spring, the positioning head can always keep in contact with the first slot, thereby maintaining the limiting function and preventing the decrease in accuracy caused by wear after long-term use. In this invention, a double limit is formed on the ball, thereby improving the limiting effect on the ball and preventing the ball from deviating from the rotation axis when rotating. At the same time, the positioning head can always keep in contact with the first slot under the action of the spring, thereby maintaining the limiting effect and preventing the accuracy from being affected by wear after long-term use.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0016] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention; Figure 2 This is a cross-sectional structural diagram of an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the first limiting member according to an embodiment of the present utility model.

[0017] In the diagram: 1. Sphere; 2. Drive groove; 3. Valve stem; 4. Fixed seat; 5. First slot; 6. First limiting component; 7. Second slot; 8. Positioning cone; 9. Limiting shaft; 10. Limiting sleeve; 11. Sealing ring; 12. Positioning pin; 13. Positioning head; 14. Spring; 15. Guide rod. Detailed Implementation

[0018] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0020] In one embodiment: Please refer to Figures 1-3 As shown, in this embodiment, a double-limit anti-deviation sealing ball valve ball is provided, including: a ball 1 disposed between the valve stem 3 and the fixed seat 4, a drive groove 2 is provided on the top of the ball 1, and the bottom of the valve stem 3 is inserted into the drive groove 2. Rotating the valve stem 3 can drive the ball 1 to rotate through the drive groove 2, thereby adjusting the opening and closing of the pipeline. The top of the fixed seat 4 is fixedly connected to the limiting sleeve 10. The bottom of the ball 1 is provided with a second slot 7. The second slot 7 and the limiting sleeve 10 are connected to a limiting shaft 9. The fixed seat 4 is fixed to the valve body by bolts. The limiting shaft 9 can be replaced by removing the fixed seat 4. The surface of the drive groove 2 is provided with a first limiting member 6. The bottom of the valve stem 3 is provided with a first slot 5. The first limiting member 6 is inserted into the first slot 5 and cooperates with the limiting shaft 9 to perform double limiting on the ball 1. The cooperation of the first limiting member 6 and the limiting shaft 9 can form double limiting on the ball 1, thereby improving the limiting effect on the ball 1 and preventing the ball 1 from deviating from the rotation axis when rotating.

[0021] In another embodiment: refer to Appendix Figures 1-3 Double-limit anti-deviation sealing ball valve ball.

[0022] In this utility model, the first limiting member 6 includes a positioning post 12, which is fixed on the surface of the drive groove 2. A guide rod 15 is fixedly connected to the top of the positioning post 12. A positioning head 13 is slidably sleeved on the top of the guide rod 15. The top of the positioning head 13 and the top of the first slot 5 are both conical and in contact. A spring 14 is sleeved on the circumference of the guide rod 15. The two ends of the spring 14 abut against the positioning head 13 and the positioning post 12 respectively through spring seats. Under the action of the spring 14, the positioning head 13 can always keep in contact with the first slot 5, thereby maintaining the limiting function and preventing the reduction of accuracy caused by wear during long-term use.

[0023] In particular, the top of the second slot 7 and the surface of the fixed base 4 are both fixedly connected with positioning cones 8. The two positioning cones 8 are respectively inserted into the top and bottom of the limiting shaft 9. The positioning cones 8 can be made of Inconel material, and the limiting shaft 9 can be made of stainless steel. The positioning cones 8 further increase the limiting effect on the ball 1.

[0024] It should be noted that the opposite ends of the two positioning cones 8 are both tapered, which facilitates installation.

[0025] In this invention, the center lines of the first limiting member 6, the limiting shaft 9, and the positioning cone 8 are the same as the rotation axis of the sphere 1.

[0026] In particular, the circumference of the limiting sleeve 10 is provided with a sealing ring 11, which increases the sealing effect between the limiting sleeve 10 and the valve body.

[0027] It should be noted that the guide rod 15 has a guide strip integrally formed on its circumference for guiding the positioning head 13.

[0028] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0029] It should be noted that in the description of this specification, descriptions such as "first" and "second" are only used to distinguish the features and do not have any actual order or directional meaning. This application is not limited to this.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example 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.

[0031] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A ball body for a double-limit anti-deviation sealing ball valve, characterized in that, include: A ball (1) is set between the valve stem (3) and the fixed seat (4), and a drive groove (2) is opened on the top of the ball (1), and the bottom of the valve stem (3) is inserted into the drive groove (2); The top of the fixed seat (4) is fixedly connected to the limiting sleeve (10), the bottom of the ball (1) is provided with a second slot (7), the second slot (7) and the limiting sleeve (10) are connected to a limiting shaft (9), the surface of the drive groove (2) is provided with a first limiting member (6), the bottom of the valve stem (3) is provided with a first slot (5), the first limiting member (6) is connected to the first slot (5) and cooperates with the limiting shaft (9) to perform double limiting on the ball (1).

2. The ball of the double-limit anti-deviation sealing ball valve as described in claim 1, characterized in that, The first limiting member (6) includes a positioning post (12), which is fixed on the surface of the drive groove (2). A guide rod (15) is fixedly connected to the top of the positioning post (12). A positioning head (13) is slidably sleeved on the top of the guide rod (15). The top of the positioning head (13) and the top of the first slot (5) are both conical and in contact. A spring (14) is sleeved on the circumference of the guide rod (15). The two ends of the spring (14) abut against the positioning head (13) and the positioning post (12) respectively through spring seats.

3. The ball of the double-limit anti-deviation sealing ball valve as described in claim 2, characterized in that, The top of the second slot (7) and the surface of the fixed base (4) are both fixedly connected with positioning cones (8), and the two positioning cones (8) are respectively inserted into the top and bottom of the limiting shaft (9).

4. The ball of the double-limit anti-deviation sealing ball valve as described in claim 3, characterized in that, The opposite ends of the two positioning cones (8) are both cone-shaped.

5. The ball of the double-limit anti-deviation sealing ball valve as described in claim 1, characterized in that, The center lines of the first limiting member (6), the limiting shaft (9) and the positioning cone (8) are the same as the rotation axis of the sphere (1).

6. The ball of the double-limit anti-deviation sealing ball valve as described in claim 1, characterized in that, The limiting sleeve (10) is provided with a sealing ring (11) around its circumference.

7. The ball of the double-limit anti-deviation sealing ball valve as described in claim 2, characterized in that, The guide rod (15) has a guide strip integrally formed on its circumference for guiding the positioning head (13).

Images