Ball valve for outputting jet fluid

Abstract

The utility model discloses a ball valve for outputting jet fluid, which relates to the technical field of ball valves and enables the fluid to be output in an annular jet mode when the valve is opened by improving the internal structure of the ball valve so as to better adapt to fluid control requirements in specific application environments. Comprising a ball body and a valve body, a first flow channel is formed in the ball body, a spraying piece is fixedly arranged in the ball body, the spraying piece covers the outlet position of the first flow channel, and an annular interval for fluid to pass through is reserved between the spraying piece and the inner wall of the first flow channel. The fluid is blocked by the jetting piece, a low-pressure area is formed in the center area, the fluid is induced to further accelerate towards the periphery and diffuse towards the periphery along the annular gap, and high-speed annular jetting flow is formed; compared with a traditional straight-through type flow channel, the structure achieves the diffusion, impact or mixing effect of the fluid, meets the special requirements of chemical reaction, cleaning, fire fighting and other scenes for the dynamic characteristics of the fluid, and is particularly suitable for application scenes needing annular injection.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a ball valve for outputting a jet fluid. Background Art

[0002] As an important component in the field of fluid control, ball valves are widely used in industrial fields such as petrochemicals, energy transportation, and water treatment due to their simple structure, good sealing, and rapid opening and closing. Traditional ball valves are usually composed of a valve body, a ball with a through hole, a valve stem, and a sealing assembly. Its working principle is to rotate the ball so that the axis of the through hole coincides with or is perpendicular to the axis of the pipeline, thereby achieving fluid conduction or cutoff. However, the fluid channel of existing ball valves mostly adopts a straight-through design. When the fluid flows through the ball, it passes in a straight line. Its flow pattern is single, and it is difficult to meet the process requirements for fluid mixing, impact, or uniform distribution in specific scenarios.

[0003] For example, in chemical reactors, the fluid needs to be in full contact with the reaction medium to improve the reaction efficiency; in cleaning equipment, high-speed fluid impact is required to remove attachments on the inner wall of the pipe or container; in environmental protection equipment, fluid diffusion is required to achieve uniform distribution of waste gas or waste liquid; in the field of agricultural irrigation and fire fighting equipment, the fluid is required to be able to be output by jetting to improve the irrigation effect and extinguishing efficiency respectively. If a traditional ball valve is used, it is often necessary to add other auxiliary devices such as nozzles, guide plates or diffusers behind the valve, resulting in a complex system structure, increased pressure loss, limited installation space, and high maintenance costs. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the defects of the prior art, the utility model provides a ball valve for outputting a jet fluid. By improving the internal structure of the ball valve, the fluid can be output in the form of a ring jet when the valve is open, thereby better adapting to the fluid control requirements in specific application environments.

[0005] The technical solution of the utility model comprises a sphere and a valve body, a first flow channel is opened in the sphere, an injection member is fixedly arranged in the sphere, the injection member covers the outlet position of the first flow channel, and an annular gap is left between the injection member and the inner wall of the first flow channel for fluid to pass through.

[0006] By adopting the above technical solution, the fluid is blocked by the injection component, forming a low-pressure area in the central area, inducing the fluid to further accelerate toward the periphery and diffuse toward the periphery along the annular gap to form a high-speed annular jet flow; compared with the traditional straight-through flow channel, this structure realizes the diffusion, impact or mixing effect of the fluid, meets the special requirements of chemical reactions, cleaning, fire fighting and other scenarios for the dynamic characteristics of the fluid, and is particularly suitable for application scenarios that require annular injection; in addition, since the fluid is ejected from the annular gap, flow paths in multiple directions are formed, which helps to promote sufficient contact and mixing between different fluids. Moreover, the injection component is directly integrated into the sphere, replacing the nozzle, guide plate and other devices that need to be installed additionally after the traditional valve, reducing external connecting components, reducing the risk of leakage, and having a more compact structure and saving installation space.

[0007] In a possible design, the injection member is conical, and the cone apex of the injection member is located on the central axis of the first flow channel.

[0008] With the above design, the conical injection element forces the fluid to diffuse evenly along the side of the cone when flowing through the first flow channel through its geometric shape, forming an annular flow path surrounding the cone, which helps to guide the fluid to diffuse evenly along the surface of the cone to form an annular jet; and because the apex of the cone is located on the central axis, it ensures that the fluid can be ejected outward in a symmetrical manner, thereby improving the uniformity and stability of the injection.

[0009] In a possible design, the conical side surface of the injection member is in an inwardly arc-shaped concave shape.

[0010] The above design can increase the contact area between the fluid and the injection element while reducing the resistance of the fluid passing through, making the fluid pass more smoothly, helping to improve the injection efficiency, and better control the injection angle and range to achieve a wider coverage.

[0011] In a possible design, the outlet position of the first flow channel has an outwardly expanding annular chamfer.

[0012] The above design can reduce the pressure loss when the fluid flows out, and at the same time help the fluid to transition to the annular injection state more smoothly, avoiding turbulence or energy loss caused by sudden changes, thereby improving the injection effect.

[0013] In a possible design, at least three fixing grooves are evenly distributed on the inner wall of the first flow channel outlet, and at least three support frames are integrally provided on the injection member. The support frames extend outward so that the ends of the support frames are placed in the fixing grooves. A fixing member is also fixedly connected in the fixing groove, and the fixing member abuts against the ends of the support frame.

[0014] With the above design, this fixing method not only ensures the stability of the installation of the injection component and prevents it from being displaced under the action of high-pressure fluid, but also disperses the pressure through multiple supporting points, reduces the load on a single connection point, and enhances the reliability and durability of the overall structure.

[0015] In a possible design, a side of the support frame facing the incoming fluid is formed into a sharp corner.

[0016] With the above design, the pointed shape helps to cut the fluid, reduce the eddy currents and resistance generated when the fluid flows, and enable the fluid to flow more smoothly to the space around the injection element, thereby improving the injection effect and achieving better fluid distribution.

[0017] In a possible design, a second flow channel for fluid to pass through is opened in the sphere, and the second flow channel is arranged perpendicular to the first flow channel.

[0018] With the above design, the first flow channel or the second flow channel can be selected by rotating the sphere, realizing the switching between the annular injection and straight-through modes to meet the needs of more diverse application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the appearance structure of a sphere in a specific embodiment of the utility model;

[0020] Figure 2 This is a cross-sectional view of a sphere according to a specific embodiment of the utility model. Figure 1 ;

[0021] Figure 3 This is a cross-sectional view of a sphere according to a specific embodiment of the utility model. Figure 2 ;

[0022] Figure 4 It is an exploded view of a sphere in a specific embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the appearance structure of a sphere in another embodiment of the utility model;

[0024] Among them, 1. sphere; 11. first flow channel; 12. annular chamfer; 13. fixing groove; 14. second flow channel; 2. injection part; 21. annular spacer; 22. support frame; 3. fixing part. DETAILED DESCRIPTION Specific embodiments

[0026] like Figure 1-4A ball valve for outputting a jet fluid is shown, comprising a ball 1 and a valve body. A first flow channel 11 is provided in the ball 1, and the fluid flows from the inlet to the outlet of the first flow channel 11. A jet component 2 is fixedly arranged in the ball 1, and the jet component 2 covers the outlet position of the first flow channel 11. An annular gap 21 for the fluid to pass through is left between the jet component 2 and the inner wall of the first flow channel 11, which is equivalent to the jet component 2 basically blocking the outlet position of the first flow channel 11, but the annular gap 21 is left to force the fluid to be ejected. Under the obstruction of the jet component 2, the fluid is induced to accelerate toward the periphery and diffuse toward the periphery along the annular gap. The cross-sectional area of ​​the annular gap is smaller than the original flow channel. When the fluid passes through, it is accelerated due to the contraction of the cross-sectional area, and the kinetic energy is greatly enhanced, thereby forming a high-speed annular jet flow. The geometric constraint of the annular gap accelerates the fluid, and the annular distribution avoids excessive concentration of the fluid, which not only increases the impact force, but also enhances the uniformity of diffusion. For example, in fire fighting and agricultural irrigation, the coverage range can be expanded; for example, in waste gas treatment, the reaction efficiency can be improved. It is suitable for liquid, gas and gas-liquid two-phase flow, and also for fluids containing particles or high viscosity such as mud and colloid. Annular injection can reduce the risk of flow channel blockage.

[0027] The injection member 2 is conical, the cone vertex of the injection member 2 is located on the central axis of the first flow channel 11, and the cone bottom is located at the outlet of the first flow channel 11. The conical injection member 2 balances the flow velocity increase and the pressure loss through its geometric shape to avoid excessive energy consumption of the system.

[0028] The conical side of the injection element 2 is in an inwardly concave arc shape. The inwardly concave arc surface can guide the fluid to generate centripetal acceleration during the injection process, further optimizing the flow trajectory of the fluid. The arc-shaped concave shape can reduce the friction resistance between the fluid and the surface of the injection element 2, increase the flow rate and enhance the concentration of the injection. In addition, the arc transition can suppress the generation of turbulence and make the annular jet flow more stable, which is suitable for scenarios with high requirements for fluid morphology accuracy, such as precision cleaning or chemical reaction mixing.

[0029] The prior art usually sets a rounded corner at the inlet and outlet of the first flow channel 11. The rounded corner reduces the turbulence and eddy current caused by the sudden change of the cross section of the fluid through a smooth transition, thereby reducing the pressure loss. If applied to the outlet of the first flow channel 11 of the present application, the rounded corner will make the outlet cross section of the flow channel smoothly expand, and the fluid will slow down and diffuse at the outlet due to the increase in cross-sectional area. The kinetic energy of the fluid after diffusion is dispersed, resulting in insufficient injection velocity, and then causing poor annular injection effect. However, the present application has an outwardly expanded annular chamfer 12 at the outlet position of the first flow channel 11, and the annular chamfer 12 can form a guide slope. The fluid flow rate is increased by the contraction effect of the annular gap, of course, a certain pressure loss must be tolerated in exchange for the injection kinetic energy, so that the annular chamfer 12 is used to guide the fluid into the annular gap to form a concentrated annular jet, and the chamfer structure avoids the local cavitation phenomenon caused by the sudden increase in flow velocity, thereby improving the uniformity of injection. At the same time, the chamfer structure can reduce the erosion and wear of the fluid on the edge of the injection member 2 and extend the service life of the valve.

[0030] The inner wall at the outlet of the first flow channel 11 is evenly distributed with four fixing grooves 13, and the injection member 2 is integrally provided with four support frames 22, which extend outward so that the ends of the support frames 22 are placed in the fixing grooves 13, and the fixing members 3 are also fixedly connected in the fixing grooves 13, and the fixing members 3 are against the ends of the support frames 22. The support frames 22 are evenly distributed in the annular gap to ensure the structural stability of the injection member 2 under the impact of high-speed fluid and prevent deflection or vibration. The fixing grooves 13 and the fixing members 3 are fixed together by screws to facilitate the installation and replacement of the injection member 2 and reduce maintenance costs.

[0031] In order to reduce the obstruction to the flow of fluid, the side of the support frame 22 facing the incoming fluid is formed into a sharp angle. The sharp leading edge can achieve a cutting effect on the incoming fluid, divide the fluid into two branches, reduce the resistance of the front surface of the support frame 22, guide the fluid to flow smoothly along the two sides of the support frame 22, and avoid the formation of a turbulent area behind the support frame 22, thereby reducing energy loss and improving injection efficiency.

[0032] There is only the first flow channel 11 in the sphere 1. When the first flow channel 11 and the flow cavity of the valve body are in relative communication, an annular spray mode is formed. When the sphere 1 is rotated, the valve is closed, forming a closed mode.

[0033] Another embodiment

[0034] The difference from the above embodiment is that:

[0035] like Figure 5As shown, a second flow channel 14 for fluid to pass through is provided in the sphere 1, and the second flow channel 14 is arranged perpendicular to the first flow channel 11. By rotating the sphere 1, the first flow channel 11 or the second flow channel 14 can be selected, and the switching between the annular injection and straight-through modes is realized, which is suitable for the switching control of a single valve on multiple fluid forms and meets the requirements of complex working conditions. When the annular injection function cannot be used due to blockage or damage, it can be switched to the second flow channel 14 to maintain the basic function of the valve and improve the reliability of the system.

Claims

1. A ball valve for outputting a jet fluid, comprising a ball (1) and a valve body, characterized in that: A first flow channel (11) is provided in the sphere (1), an injection member (2) is fixedly arranged in the sphere (1), the injection member (2) covers the outlet position of the first flow channel (11), and an annular spacer (21) is left between the injection member (2) and the inner wall of the first flow channel (11) for fluid to pass through.

2. The ball valve for outputting a jet of fluid according to claim 1, characterized in that: The injection member (2) is in a cone shape, and the cone apex of the injection member (2) is located on the central axis of the first flow channel (11).

3. The ball valve for outputting a jet of fluid according to claim 2, characterized in that: The conical side surface of the injection member (2) is in an inwardly arc-shaped concave shape.

4. The ball valve for outputting a jet fluid according to claim 1, characterized in that: The outlet position of the first flow channel (11) has an outwardly expanding annular chamfer (12).

5. The ball valve for outputting a jet fluid according to claim 1, characterized in that: At least three fixing grooves (13) are evenly distributed on the inner wall of the first flow channel (11) at the outlet position, and at least three support frames (22) are integrally arranged on the injection member (2), and the support frames (22) extend outward so that the ends of the support frames (22) are placed in the fixing grooves (13), and a fixing member (3) is also fixedly connected in the fixing grooves (13), and the fixing member (3) abuts against the ends of the support frames (22).

6. The ball valve for outputting a jet fluid according to claim 5, characterized in that: The side of the support frame (22) facing the incoming fluid material is formed into a sharp angle.

7. The ball valve for outputting a jet of fluid according to any one of claims 1 to 6, characterized in that: A second flow channel (14) for fluid to pass through is provided in the sphere (1), and the second flow channel (14) is arranged perpendicular to the first flow channel (11).

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