Impact-resistant high-strength ball valve

Abstract

The utility model relates to ball valve technical field, concretely relates to an impact resistance high strength ball valve, including main valve body, the bottom fixed connection of main valve body has high bearing low stress lower support mechanism, high bearing low stress lower support mechanism includes the fixed connection in the bottom of main valve body's connecting base, the top of connecting base is provided with the extension pivot, the bottom of main valve body is rotatably connected with the extension pivot, the bottom fixed connection of main valve body has the extension shaft sleeve and the bottom of extension shaft sleeve installs the sealing ring, the inside of extension shaft sleeve is opened elliptical groove, the inside of elliptical groove is slid elliptical outer package and the outside of elliptical outer package is coated with graphite coating, elliptical outer package fixed connection in the outside wall of extension pivot. The utility model through main valve body and high bearing low stress lower support mechanism's cooperation, will impact load evenly dispersed, has improved the positioning accuracy of valve ball, stability and the fatigue life of whole support system significantly.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, specifically to a high-strength ball valve with impact resistance. Background Technology

[0002] A sealed ball valve is a valve in which the opening and closing element (ball) is driven by the valve stem and rotates around the valve axis. It can also be used for fluid regulation and control. In pipelines, it is mainly used for shut-off, distribution, and changing the flow direction of the medium. It only requires a 90-degree rotation and a very small torque to close tightly, making it suitable for use as a switch and shut-off valve. Sealed ball valves are widely used in petroleum refining, long-distance pipelines, chemical, papermaking, pharmaceutical, water conservancy, power, municipal, and steel industries, and occupy a pivotal position in the national economy.

[0003] Typical sealed ball valves have a simple shell structure with low strength. They are easily damaged by external impacts, and water flow will also impact the inside of the ball valve. If the ball valve is not strong enough, it cannot maintain long-term stable use.

[0004] Therefore, it is necessary to invent a high-strength, impact-resistant ball valve to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a high-strength, impact-resistant ball valve. By combining the main valve body with a support mechanism under high load and low stress, the strength of the ball valve is improved, thus solving the problem that the ball valve in the prior art is not strong enough and cannot maintain long-term stable use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-strength, impact-resistant ball valve, comprising a main valve body, a high-load-bearing, low-stress support mechanism fixedly connected to the bottom end of the main valve body, a connecting base fixedly connected to the bottom end of the main valve body, an extension shaft disposed above the connecting base, the extension shaft rotatably connected to the bottom of the main valve body, an extension sleeve fixedly connected to the bottom end of the main valve body, a sealing ring installed at the bottom of the extension sleeve, an elliptical groove formed inside the extension sleeve, an elliptical outer part sliding inside the elliptical groove, the outer side of the elliptical outer part coated with a graphite coating, the elliptical outer part fixedly connected to the outer wall of the extension shaft, a bearing part fixedly connected to the bottom end of the extension shaft, the bearing part having a diameter larger than the extension sleeve, a gasket fixedly connected to the bottom end of the bearing part, and an arc-shaped bottom groove formed on the surface of the connecting base, with the gasket sliding inside the arc-shaped bottom groove. The high-load-bearing, low-stress support mechanism increases wear resistance and load-bearing capacity.

[0007] Preferably, water pipes are fixedly connected to both sides of the main valve body, and several sets of third reinforcing ribs are fixedly connected to the outer wall of the water pipes to initially enhance the impact resistance.

[0008] Preferably, the outer wall of the water pipe is fixedly connected to a second reinforcing rib, and the water pipe and the second reinforcing rib are staggered. The outer wall of the main valve body is fixedly connected to a first reinforcing rib, and the first reinforcing rib is connected to the second reinforcing rib. The first reinforcing rib and the second reinforcing rib are used to further enhance the impact resistance.

[0009] Preferably, a valve top protection part is fixedly connected to the top of the main valve body, and a valve stem is rotatably connected to the top of the valve top protection part, and the valve is controlled by the valve stem.

[0010] Preferably, a valve ball is installed at the bottom end of the valve stem, and an installation groove is provided at the bottom of the valve stem and an extended rotating shaft is fixedly connected inside the installation groove, so that the valve ball can be rotated by the valve stem.

[0011] Preferably, the valve ball has a through groove at its center, and the outer wall of the through groove is coated with a wear-resistant coating to enhance the strength of the through groove.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows: Through the cooperation between the main valve body and the support mechanism under high load and low stress, and the precise sliding fit between the elliptical groove and the elliptical outer part coated with graphite, the ball is endowed with a slight self-aligning capability. This effectively compensates for machining and assembly errors, avoids edge contact and stress concentration caused by poor alignment, and thus evenly distributes the impact load, significantly improving the positioning accuracy, stability, and fatigue life of the entire support system. At the same time, the design of the bearing part integrated in the lower section of the mechanism and the arc-shaped bottom groove greatly increases the thrust bearing area, which can efficiently withstand the huge downward axial impact force transmitted from the valve ball and valve stem. Combined with the mesh reinforcement structure composed of the first, second, and third reinforcing ribs on the outside of the valve body, the overall impact resistance and pressure bearing strength of the ball valve are comprehensively enhanced from both internal support and external rigidity aspects, enabling it to maintain reliable sealing and long service life even under harsh working conditions. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the valve ball structure of this utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Main valve body; 2. Support mechanism under high load and low stress; 201. Connecting base; 202. Extended shaft; 203. Extended bushing; 204. Elliptical groove; 205. Elliptical outer part; 206. Bearing part; 207. Gasket; 208. Arc-shaped bottom groove; 3. Water pipe part; 4. First reinforcing rib; 5. Second reinforcing rib; 6. Valve top protection part; 7. Valve stem; 8. Third reinforcing rib; 9. Valve ball; 10. Through groove; 11. Wear-resistant coating. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0017] This utility model provides, for example Figure 1-4The diagram illustrates a high-strength, impact-resistant ball valve, comprising a main valve body 1. A high-load-bearing, low-stress support mechanism 2 is fixedly connected to the bottom end of the main valve body 1. The high-load-bearing, low-stress support mechanism 2 includes a connecting base 201 fixedly connected to the bottom end of the main valve body 1. An extension shaft 202 is disposed above the connecting base 201 and rotatably connected to the bottom of the main valve body 1. An extension bushing 203 is fixedly connected to the bottom end of the main valve body 1, and a sealing ring is installed at the bottom of the extension bushing 203. An elliptical groove 204 is formed inside the extension bushing 203. An elliptical outer part 205 slides inside the elliptical groove 204, and the outer side of the elliptical outer part 205 is coated with a graphite coating. The elliptical outer part 205 is fixedly connected to the outer wall of the extension shaft 202. A bearing part is fixedly connected to the bottom end of the extension shaft 202. 206 and the diameter of the bearing part 206 is larger than that of the extension bushing 203. A gasket 207 is fixedly connected to the bottom end of the bearing part 206. An arc-shaped bottom groove 208 is opened on the surface of the connecting base 201 and the gasket 207 slides inside the arc-shaped bottom groove 208. The support mechanism 2 under high load and low stress increases the wear resistance and load-bearing capacity. Water pipe parts 3 are fixedly connected to both sides of the main valve body 1. Several sets of third reinforcing ribs 8 are fixedly connected to the outer side wall of the water pipe parts 3. The impact resistance is initially enhanced by the third reinforcing ribs 8. Second reinforcing ribs 5 are fixedly connected to the outer side wall of the water pipe parts 3 and the water pipe parts 3 and the second reinforcing ribs 5 are staggered. First reinforcing ribs 4 are fixedly connected to the outer side wall of the main valve body 1. The first reinforcing ribs 4 are connected to the second reinforcing ribs 5. The impact resistance is further enhanced by the first reinforcing ribs 4 and the second reinforcing ribs 5.

[0018] Refer to the instruction manual appendix Figure 1-4The top of the main valve body 1 is fixedly connected to a valve top protection part 6, and the top of the valve top protection part 6 is rotatably connected to a valve stem 7. Control is achieved through the valve stem 7. A through groove 10 is installed at the bottom of the valve stem 7. An installation groove is opened at the bottom of the valve stem 7, and an extension shaft 202 is fixedly connected inside the installation groove. The valve stem 7 drives the valve ball 9 to rotate. A through groove 10 is opened at the center of the valve ball 9. The outer wall of the valve ball 9 is coated with a wear-resistant coating 11 to strengthen the through groove 10. Through the cooperation between the main valve body 1 and the high-load, low-stress support mechanism 2, and through the precise sliding cooperation between the elliptical groove 204 and the elliptical outer part 205 coated with graphite, the ball is given a slight self-adjusting ability, which can effectively compensate for machining. To mitigate assembly errors and avoid edge contact and stress concentration caused by poor alignment, the impact load is evenly distributed, significantly improving the positioning accuracy, stability, and fatigue life of the entire support system. Simultaneously, the integrated bearing section 206 and the arc-shaped bottom groove 208 of the lower section of the mechanism greatly increase the thrust bearing area, efficiently withstanding the enormous downward axial impact force transmitted from the valve ball 9 and valve stem 7. Combined with the mesh reinforcement structure formed by the first reinforcing rib 4, the second reinforcing rib 5, and the third reinforcing rib 8 on the valve body, the overall impact resistance and pressure bearing strength of the ball valve are comprehensively enhanced from both internal support and external rigidity perspectives, ensuring reliable sealing and a long service life even under harsh operating conditions.

[0019] The working principle of this practical application is as follows: Refer to the instruction manual appendix Figure 1-4During operation, its core working mechanism is reflected in the multi-level decomposition and adaptive adjustment of impact loads. When the valve is in the closed state and subjected to the impact of high-pressure media or during the opening process and subjected to the erosion of high-speed fluid, the impact force mainly acts on the valve ball 9. The valve ball 9 transmits the huge axial thrust it receives downward to the precision-fitted extended shaft 202. The bearing part 206 at the lower end of the extended shaft 202 transmits the axial force it receives downward and evenly diffuses it to the arc-shaped bottom groove 208 on the connecting base 201 through the gasket 207 at its bottom. On the contact surface, this large-area curved contact design transforms concentrated point stress into distributed stress, greatly improving the load-bearing efficiency per unit area and avoiding crushing or plastic deformation caused by stress concentration in traditional structures. This allows it to stably withstand downward impact forces. Simultaneously, the radial unbalanced force and bending moment generated by the fluid impact are borne by the upper radial positioning area of ​​the extended shaft 202 and transmitted to its outer elliptical outer part 205. This elliptical outer part 205 connects with the elliptical groove 20 inside the extended bushing 203 fixed to the main valve body 1. 4. This constitutes a precise self-aligning pair; under radial force, the elliptical outer part 205, coated with a low-friction graphite coating, can slide and deflect within the elliptical groove 204. This small amount of movement allows the entire lower support system to compensate for coaxiality deviations caused by temperature changes, machining errors, or installation stress, automatically guiding the valve ball 9 back to its precise centered position. This ensures that the sealing surface of the valve ball 9 and the sealing surface of the valve seat always maintain uniform contact and uniform force distribution, fundamentally eliminating the leakage risk caused by uneven wear and smoothly transitioning stress. The fatigue resistance is significantly improved, and the deformation resistance of the valve body is ensured by the mesh reinforcement structure composed of the first reinforcing rib 4, the second reinforcing rib 5 and the third reinforcing rib 8. Together, they enhance the rigidity of the main valve body 1 and the middle cavity, effectively resisting the bending moment caused by pipeline stress. In addition, the valve stem 7 drives the rotation of the groove 10 and the valve ball 9. The wear-resistant coating 11 coated on the surface of the groove 10 directly faces the scouring of the medium, effectively protecting the surface integrity of the flow channel. Together, they achieve high strength, high impact resistance and long service life of the ball valve under extreme working conditions.

[0020] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-strength ball valve resistant to impacts, comprising a main valve body (1), characterized in that: The bottom end of the main valve body (1) is fixedly connected with a high-bearing low-stress lower support mechanism (2), the high-bearing low-stress lower support mechanism (2) comprises a connecting base (201) fixedly connected to the bottom end of the main valve body (1), an extension shaft (202) is arranged above the connecting base (201), the extension shaft (202) is rotatably connected to the bottom of the main valve body (1), the bottom end of the main valve body (1) is fixedly connected with an extension shaft sleeve (203), and the bottom of the extension shaft sleeve (203) is provided with a sealing ring, an elliptical groove (204) is formed in the extension shaft sleeve (203), an elliptical outer part (205) is slidably arranged in the elliptical groove (204), and the outer side of the elliptical outer part (205) is coated with a graphite coating, the elliptical outer part (205) is fixedly connected to the outer side wall of the extension shaft (202), the bottom end of the extension shaft (202) is fixedly connected with a bearing part (206), and the diameter of the bearing part (206) is greater than that of the extension shaft sleeve (203), the bottom end of the bearing part (206) is fixedly connected with a gasket (207), and an arc-shaped bottom groove (208) is formed in the surface of the connecting base (201), and the gasket (207) is slidably arranged in the arc-shaped bottom groove (208).

2. A high strength ball valve resistant to impact according to claim 1, characterized in that: The two sides of the main valve body (1) are fixedly connected with water pipe parts (3), and the outer side walls of the water pipe parts (3) are fixedly connected with a plurality of groups of third reinforcing ribs (8).

3. A high strength ball valve resistant to impact according to claim 2, characterized in that: The outer side walls of the water pipe parts (3) are fixedly connected with second reinforcing ribs (5), and the water pipe parts (3) and the second reinforcing ribs (5) are arranged alternately, the outer side wall of the main valve body (1) is fixedly connected with a first reinforcing rib (4), and the first reinforcing rib (4) is connected with the second reinforcing rib (5).

4. A high strength, high impact ball valve according to claim 1, wherein: The top end of the main valve body (1) is fixedly connected with a valve top protection part (6), and the top of the valve top protection part (6) is rotatably connected with a valve rod (7).

5. A high strength, impact resistant ball valve according to claim 4, wherein: The bottom end of the valve rod (7) is provided with a valve ball (9), and the bottom of the valve rod (7) is provided with a mounting groove, and the extension shaft (202) is fixedly connected in the mounting groove.

6. A high strength, impact resistant ball valve according to claim 5, wherein: A through groove (10) is formed in the center of the valve ball (9), and the outer side wall of the valve ball (9) is coated with a wear-resistant coating (11).

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