Anti-scouring pneumatic ball valve

Abstract

The utility model discloses an anti-scouring pneumatic ball valve. The anti-scouring pneumatic ball valve comprises a valve body, a driving assembly and a ball valve element set. Flange ports are formed in the two ends of the valve body and used for being connected with pipelines. The driving assembly is fixedly installed on the top face of the valve body, a spindle rod is arranged at the output end and drives the ball valve element set to deflect, and the opening and closing functions of the valve are achieved. The ball valve element set comprises a valve element, a branch guide end cover, a beam end cover, a buffer element and a spring. A liquid inlet hole and a plurality of dispersion liquid holes are formed in the branch guide end cover, so that liquid flow dispersion is realized, and local scouring is reduced. Through the structural design of dispersion, flow limiting and buffering of liquid flow, the flushing action of the liquid flow on the valve element and the valve body is effectively reduced, the water hammer effect is eliminated, the anti-flushing performance and the sealing performance of the ball valve are improved, the service life of the ball valve is prolonged, and the ball valve is particularly suitable for stable operation under the working condition of high-pressure and high-speed liquid flow.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to an anti-erosion pneumatic ball valve. Background Technology

[0002] In existing pneumatic ball valve technology, ball valves are typically used to control the flow rate, pressure, and direction of media within pipelines, and are widely used in high-pressure, high-velocity operating conditions. However, the traditional pneumatic ball valve structure mainly consists of a valve body, a ball (valve core), a valve seat, and an actuator, with the ball acting as the actuator to open and close the valve. After the fluid flows through the ball's channel, it directly contacts the ball and the inner wall of the valve body. Especially under the influence of high-pressure, high-speed fluids, the fluid flow causes erosion and wear, leading to gradual wear on the surfaces of the ball and valve seat. In severe cases, this can even result in leakage and functional failure. Furthermore, high-speed fluid flow can easily create a water hammer effect, causing severe impact on the valve and pipeline system, affecting the safe and stable operation of the system.

[0003] The main drawbacks of traditional technical solutions include:

[0004] Severe erosion and wear: High-speed liquid flow directly impacts the valve core (ball) and the inner wall of the valve body. The lack of dispersion and buffering of the liquid flow leads to accelerated wear on the valve body surface and shortens the service life of the ball valve.

[0005] Water hammer effect is difficult to eliminate: Since the kinetic energy of high-speed liquid flow cannot be effectively absorbed and buffered, traditional ball valves are prone to water hammer during opening and closing, causing liquid backflow and affecting system stability.

[0006] Limited structural and functional capabilities: Existing ball valves typically only have opening and closing functions, lacking designs for liquid flow dispersion, flow restriction and buffering, and cannot meet the anti-erosion requirements under complex working conditions.

[0007] In view of this, we have studied and improved the existing problems to provide an anti-erosion pneumatic ball valve to solve the current problems. The aim of this technology is to solve the problems and improve its practical value. Utility Model Content

[0008] This invention aims to solve the problems of ball valves being susceptible to erosion and wear and severe water hammer effects in the prior art, and provides an anti-erosion pneumatic ball valve. Through structural designs such as dispersing liquid flow and limiting buffering, the anti-erosion performance and service life of the ball valve are effectively improved.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] An anti-erosion pneumatic ball valve includes: a valve body, a drive assembly, and a ball valve core assembly;

[0011] The valve body is provided with flange ports at both ends for connection to pipelines;

[0012] The drive assembly is fixedly installed on the top surface of the valve body. The output end of the drive assembly is provided with a main shaft connected to the ball valve core assembly. By driving the main shaft, the ball valve core assembly is deflected to realize the opening and closing of the valve.

[0013] The ball valve core assembly includes:

[0014] Valve core: Located inside the valve body, with a liquid passage in the inner cavity;

[0015] Distributor end cap: Fixedly installed at one end of the valve core, the surface of the distributor end cap is provided with a liquid inlet hole and several dispersion holes, which are used to disperse the fluid into the inner cavity of the valve core.

[0016] Beam end cap: Fixedly installed on the other end of the valve core, the surface of the beam end cap is provided with beam holes for beaming out the dispersed liquid flow;

[0017] Buffer core: Slidingly installed inside the valve core, the surface of the buffer core is provided with flow channel holes and flow guide slopes, used to limit and buffer the liquid flow and absorb the kinetic energy of the liquid flow;

[0018] Spring: One end of the spring abuts against the beam end cap, and the other end abuts against the buffer core, providing elastic support for the sliding of the buffer core.

[0019] In a preferred embodiment, the present invention can be further configured such that the dispersing holes of the guide cap are evenly distributed in the circumferential direction to ensure that the liquid flow is evenly dispersed into the inner cavity of the valve core and to reduce the impact of local flow velocity.

[0020] In a preferred embodiment, the present invention can be further configured such that the flow-guiding slope of the buffer core gradually decreases along the direction from the branch end cap to the beam end cap, forming a gradual flow-limiting effect and reducing the impact of liquid kinetic energy.

[0021] In a preferred embodiment, the present invention can be further configured such that the spring elastically supports the buffer core, which achieves dynamic response under the impact of liquid flow, effectively absorbs the reaction force of the liquid flow, and prevents the water hammer effect.

[0022] In a preferred embodiment, the present invention can be further configured such that the beam holes of the beam end cap are arranged in a multi-hole annular pattern, which further improves the stability of the liquid flow and the discharge effect.

[0023] In a preferred embodiment, the present invention can be further configured such that: the outer periphery of the valve core is in sealing contact with the inner side of the valve body, and a sealing ring is provided on the inner side of the valve body to abut against the surface of the valve core, thereby ensuring the sealing performance of the ball valve.

[0024] The beneficial effects achieved by this utility model are as follows:

[0025] 1. In this utility model, the combination structure of the guide end cap and the flow-concentrating end cap disperses and concentrates the liquid flow respectively, realizing adaptive flow limiting and buffering functions to eliminate the scouring effect of high-speed liquid flow on the valve core and the inner wall of the valve body, effectively improving the anti-scouring performance and service life of the ball valve.

[0026] 2. In this utility model, by setting the guide slope and flow channel hole on the buffer core, an adaptive flow limiting and buffering effect is formed when the liquid flows through, effectively absorbing the kinetic energy of the liquid flow. When the liquid flow impacts, it can dynamically respond and buffer the reaction force, further improving the absorption effect of liquid flow energy and enhancing the anti-scouring performance of the ball valve. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the internal structure of the valve body according to an embodiment of the present invention;

[0029] Figure 3 This is an exploded view of the ball valve core assembly according to an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the cross-sectional structure of a ball valve core assembly according to an embodiment of the present invention.

[0031] Figure label:

[0032] 100, Valve body; 110, Flange port; 200, Drive assembly; 210, Main shaft; 300, Ball valve core assembly; 310, Valve core; 320, Guide end cap; 330, Flow end cap; 340, Buffer core; 350, Spring; 321, Liquid inlet; 322, Dispersant liquid hole; 331, Flow hole; 341, Flow channel hole; 342, Guide slope. 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 is in conjunction with the appendix Figures 1-4 This invention describes an anti-erosion pneumatic ball valve provided by some embodiments of the present invention.

[0036] This utility model provides an anti-erosion pneumatic ball valve, including: valve body 100, drive assembly 200 and ball valve core assembly 300.

[0037] Valve body 100: The valve body has a flow channel inside. Both ends of the valve body 100 are connected to the pipeline through flange ports 110 to realize the introduction and export of fluid.

[0038] Drive assembly 200: The drive assembly 200 is fixed to the top surface of the valve body 100. The output end is provided with a main shaft 210 connected to the ball valve core assembly 300. The drive assembly 200 drives the main shaft 210 to drive the ball valve core assembly 300 to deflect, thereby realizing the opening and closing function of the valve body.

[0039] Ball valve core assembly 300: The ball valve core assembly 300 includes:

[0040] Valve core 310: It has a spherical structure and is located inside the valve body 100. The inner cavity is provided with a fluid channel for fluid conduction.

[0041] Distributor end cap 320: Fixedly installed at one end of valve core 310, the distributor end cap 320 has a liquid inlet hole 321 and several dispersing liquid holes 322 on its surface. The dispersing liquid holes 322 are evenly distributed in the circumferential direction to uniformly disperse the fluid into the inner side of the valve core and reduce the impact of the flow rate on the valve core.

[0042] Beam end cap 330: Fixedly installed at the other end of valve core 310. The surface of beam end cap 330 is provided with beam hole 331 for beaming out the dispersed liquid flow, improving the stability of the liquid flow, and preventing secondary diffusion of the liquid flow from eroding the inner wall of the valve body.

[0043] The outer periphery of the guide end cap 320 and the beam end cap 330 is provided with threads that connect to the inner side of the valve core 310.

[0044] Buffer core 340: The buffer core 340 is slidably installed inside the valve core 310. The surface is provided with several flow channel holes 341 and flow guide slopes 342. The flow guide slopes 342 gradually decrease in size along the direction from the branch end cover 320 to the flow beam end cover 330, which is used to form an adaptive flow restriction and buffering effect on the liquid flow and reduce the kinetic energy of the high-speed liquid flow.

[0045] The guide slope 342 is a tapered surface that gradually tapers from the guide end cap 320 to the beam end cap 330.

[0046] Spring 350: One end of spring 350 abuts against beam end cap 330, and the other end abuts against buffer core 340, providing elastic support for the sliding of buffer core 340.

[0047] Working principle

[0048] Fluid enters the valve body 100 through the flange port 110, and first enters the valve core 310 through the inlet hole 321 on the guide end cover 320. After the dispersion effect of the dispersion hole 322, the flow velocity is evenly distributed when entering the valve core, reducing the impact force of the fluid on the valve core and the inner wall of the valve body.

[0049] After the liquid enters the inner cavity of the valve core 310, it undergoes further flow restriction and buffering through the flow channel hole 341, allowing part of the liquid's kinetic energy to drive the buffer core 340 to move. This drives the guide slope 342 to move close to the beam end cap 330. The guide slope 342 gradually narrows along the direction from the branch guide end cap 320 to the beam end cap 330, so that the automatic movement of the buffer core 340 achieves adaptive flow restriction and buffering effects.

[0050] Under the impact of high-speed liquid flow, the buffer core 340 can slide under the elastic support of the spring 350, and absorb the kinetic energy of the liquid flow impact through dynamic response, buffering the reaction force and avoiding the water hammer effect.

[0051] Beaming and Extraction

[0052] After buffering, the fluid flow is discharged through the flow hole 331 on the flow end cap 330. The flow end cap 330 directs the flow of the fluid, improves the stability of the fluid flow, and avoids secondary diffusion of the fluid from scouring the valve core and valve body.

[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. An anti-erosion pneumatic ball valve, characterized in that, include: The valve body (100), drive assembly (200), and ball valve core assembly (300) rotatably mounted inside the valve body (100) are provided. The drive assembly (200) is fixed to the top surface of the valve body (100), and the output end of the drive assembly (200) is provided with a main shaft (210) connected to the top surface of the ball valve core assembly (300). The drive assembly (200) is used to drive the ball valve core assembly (300) to deflect and realize the opening and closing of the valve body. The ball valve core assembly (300) includes a valve core (310) and a guide end cap (320), a beam end cap (330), and a buffer core (340) located inside the valve core (310). The guide end cap (320) and The outer periphery of the beam end cap (330) is provided with threads that connect to the inner side of the valve core (310). The surface of the guide end cap (320) is provided with a liquid inlet hole (321) and a plurality of dispersion holes (322) communicating with the liquid inlet hole (321), and the plurality of dispersion holes (322) are evenly distributed in the circumferential direction. The buffer core (340) is slidably installed on the inner side of the valve core (310). One side of the beam end cap (330) is provided with a spring (350) that abuts against the surface of the buffer core (340). The surface of the buffer core (340) is provided with a plurality of flow channel holes (341). The surface of the beam end cap (330) is provided with a beam hole (331).

2. The anti-erosion pneumatic ball valve according to claim 1, characterized in that, One end of the buffer core (340) extends through the beam aperture (331). The surface of the buffer core (340) is provided with a flow guiding slope (342), and the flow guiding slope (342) is a tapered surface that gradually tapers from the guide end cap (320) to the beam end cap (330). The flow guiding slope (342) faces the surface of the beam end cap (330).

3. The anti-erosion pneumatic ball valve according to claim 1, characterized in that, The dispersion hole (322) is radially connected to the inlet hole (321) and is used to guide the liquid flow from one side of the valve core (310) into the inner side of the valve core (310).

4. The anti-erosion pneumatic ball valve according to claim 1, characterized in that, The buffer core (340) is pushed by a spring (350) to elastically abut against one end of the guide end cap (320), and the flow channel hole (341) on the surface of the buffer core (340) is used for water to pass through the buffer core (340).

5. The anti-erosion pneumatic ball valve according to claim 1, characterized in that, The outer periphery of the buffer core (340) slides against the inner side of the valve core (310), and the sliding direction of the buffer core (340) is perpendicular to the surfaces of the guide end cap (320) and the beam end cap (330).

6. The anti-erosion pneumatic ball valve according to claim 1, characterized in that, The outer periphery of the valve core (310) is sealed and abutted against the inner side of the valve body (100), and the inner side of the valve body (100) is provided with a sealing ring that abuts against the surface of the valve core (310).

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