Ball valve with one-way flow

Abstract

The utility model discloses a one -way flow's ball valve, including valve body, first valve seat, valve rod, ball and handle, and valve body has inflow channel and outflow channel, and ball valve has inner flow channel, is provided with one -way guide assembly that controls whether the inner flow channel is linked with outflow channel in the inner flow channel, only in the case where fluid flows from inflow channel to outflow channel direction, and guide assembly automatically guides the inner flow channel and outflow channel to be open. The utility model discloses be provided with one -way guide assembly in the inner flow channel, and one -way guide assembly only in the case where fluid enters the inner flow channel from inflow channel automatically guides the inner flow channel and outflow channel to be open, when fluid flow is suddenly reduced or pump stops suddenly, one -way guide assembly can automatically, rapidly close, prevent medium backflow, and simultaneously, if one -way guide assembly can not be completely sealed because of long -term use or because of foreign matter and can not close tightly, can seal ball valve through rotating valve rod, has played the safe advantage that ball valve sealing is reliable, and operation is simple.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically relating to a one-way flow ball valve. Background Technology

[0002] A valve is a mechanical device used to control the flow of fluids, typically consisting of a valve body, valve cover, valve stem, valve seat, and sealing rings. It can open, close, or regulate fluids in pipelines, adjusting parameters such as flow rate, pressure, and temperature to meet requirements under different operating conditions. Common valve types include ball valves, gate valves, globe valves, and butterfly valves. A ball valve is a valve in which the valve stem drives the opening and closing element (ball) to rotate around the valve's axis. Ball valves are mainly used in pipelines for cutting off, distributing, and changing the flow direction of media. They require only a 90-degree rotation and a very small torque to achieve a tight seal. In my country, ball valves are widely used in industries such as petroleum refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, power, municipal engineering, and steel, playing a crucial role in the national economy.

[0003] Existing ball valves often lack unidirectional flow capability. However, the segmented management and maintenance of HVAC and drinking water pipelines requires not only the ability to control pipeline opening and closing but also the ability to automatically prevent backflow of media from the downstream pipeline into the upstream pipeline when a pressure difference reverses between the upstream and downstream pipelines. Typically, ball valves for opening and closing and unidirectional check valves for backflow prevention are installed in series on such pipelines. This necessitates the separate installation of two types of valves, which inconveniences pipeline construction and maintenance, and increases material, construction, and subsequent maintenance costs. Therefore, existing technologies suffer from high costs and inconvenient construction and maintenance. Utility Model Content

[0004] To solve at least one technical problem of the prior art, this utility model provides a unidirectional flow ball valve.

[0005] To achieve the above-mentioned utility model objectives, the technical solution adopted by this utility model is: a one-way flow ball valve, comprising a valve body, a first valve seat, a valve stem, a ball, and a handle. The valve body has an inflow channel and an outflow channel. The ball valve has an inner flow channel communicating with the inflow channel and the outflow channel. A one-way guiding component is provided in the inner flow channel to control whether the inner flow channel and the outflow channel are connected. Only when the fluid flows from the inflow channel to the outflow channel, the guiding component automatically connects the inner flow channel and the outflow channel.

[0006] In some embodiments, the unidirectional conduction component includes: A second valve seat is disposed in the inner flow channel, the second valve seat having a flow port, the inner flow channel communicating with the outflow channel through the flow port; and... The valve disc is rotatably mounted on the second valve seat and can block the flow port. The valve disc is only opened under the impact of fluid flowing from the inflow channel to the outflow channel.

[0007] In some embodiments, the valve disc is mounted on the end face of the first valve seat facing the outflow channel.

[0008] In some embodiments, the valve disc has a plug that blocks the flow port, the plug being disposed on the end face of the valve disc facing the inflow channel.

[0009] In some embodiments, the second valve seat is inclined.

[0010] In some embodiments, a shaft hole is provided at the bottom of the valve body, and the shaft hole is located below the ball; The one-way ball valve also includes a fixed shaft, which passes through the shaft hole and is rotatably connected to the ball.

[0011] In some embodiments, the fixed shaft includes a shaft body disposed within the shaft hole and rotatably connected to the ball, and an end cap fixed to the end of the shaft body, the end cap being detachably connected to the valve body.

[0012] In some embodiments, an O-ring is provided between the shaft and the shaft hole, and a sealing gasket is provided between the end cap and the valve body.

[0013] In some embodiments, the top of the valve body is provided with a rod hole, the valve stem is movably disposed in the rod hole and connected to the ball, and an O-ring is provided between the valve stem and the rod hole; A bushing is fitted onto the valve stem, and the bushing is disposed in the stem hole.

[0014] In some embodiments, the one-way ball valve further includes a valve cover detachably attached to the top of the valve body, through which the valve stem is connected to the handle.

[0015] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This invention features a one-way flow assembly within the inner flow channel of the ball valve. This assembly automatically connects the inner and outer flow channels only when fluid enters from the inflow channel. When the fluid flow rate decreases suddenly or the pump stops abruptly, the one-way flow assembly automatically and quickly closes, preventing backflow and thus curbing further water hammer damage. Furthermore, if the one-way flow assembly cannot completely seal due to prolonged use or is blocked by foreign objects, the ball valve can be sealed by rotating the valve stem, leveraging the ball valve's reliable sealing and simple operation advantages. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a partial cross-sectional view of a one-way flow ball valve according to the present invention. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0020] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0021] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0022] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0023] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Please refer to Figure 1 This utility model provides a one-way flow ball valve, including a valve body 1, a first valve seat 2, a valve stem 3, a ball 4 and a handle. The valve body 1 has an inflow channel 11 and an outflow channel 12. The ball valve has an inner flow channel 40 that communicates with the inflow channel 11 and the outflow channel 12. A one-way guiding component 5 is provided in the inner flow channel 40 to control whether the inner flow channel 40 and the outflow channel 12 are connected. Only when fluid enters the inner flow channel 40 from the inflow channel 11, the guiding component automatically connects the inner flow channel 40 and the outflow channel 12.

[0025] This invention features a one-way flow assembly 5 within the inner flow channel 40 of the ball valve 4. This assembly controls the connection between the inner flow channel 40 and the outflow channel 12. The one-way flow assembly 5 automatically connects the inner flow channel 40 and the outflow channel 12 only when fluid flows from the inflow channel 11 to the outflow channel 12. When the fluid flow rate suddenly decreases or the pump stops abruptly, the one-way flow assembly 5 automatically and quickly closes, cutting off the connection between the inner flow channel 40 and the outflow channel 12, thereby preventing backflow and curbing further water hammer damage. Furthermore, if the one-way flow assembly 5 cannot completely seal due to prolonged use or is stuck due to foreign objects, the ball valve can be sealed by rotating the valve stem 3, leveraging the reliable sealing and simple operation advantages of the ball valve.

[0026] In some embodiments, the unidirectional flow assembly 5 includes a second valve seat 51 and a valve disc 52. The second valve seat 51 is disposed in the inner flow channel 40 and has a flow port 510. The inner flow channel 40 is connected to the outflow channel 12 through the flow port 510. The valve disc 52 is rotatably mounted on the second valve seat 51 and can block the flow port 510. The valve disc 52 is in a closed state when not under force, that is, the valve disc 52 blocks the flow port 510 and cuts off the connection between the inner flow channel 40 and the outflow channel 12. When the fluid flows from the inflow channel 11 to the outflow channel 12, the fluid impacts the valve disc 52. Under the action of the fluid impact force, the valve disc 52 automatically opens, and the inner flow channel 40 is connected to the outflow channel 12. The valve disc 52 is only in the open state under this condition. When the fluid flow rate decreases suddenly or the pump stops abruptly, the valve disc 52 will automatically and quickly block the flow port 40 to cut off the connection between the inner flow channel 40 and the outflow channel 12, thereby preventing the medium from flowing back.

[0027] In some embodiments, the valve disc 52 is mounted on the end face of the first valve seat 2 facing the outlet channel 12, so that when the fluid flows from the inflow channel 11 to the outlet channel 12, the fluid will impact the valve disc 52 and force the valve disc 52 to open; conversely, when the fluid flows from the inflow channel 11 to the outlet channel 12, the impact force of the fluid acting on the valve disc 52 will make the valve disc 52 more tightly block the flow port 40, thereby preventing the medium from flowing back and realizing guiding and conduction.

[0028] In some embodiments, the valve disc 52 has a plug 520 that blocks the flow port 510, and the plug 520 is disposed on the end face of the valve disc 52 facing the inflow channel 11. Preferably, the plug 520 is made of rubber.

[0029] In some implementations, the second valve seat 51 is tilted to better facilitate unidirectional flow.

[0030] In some embodiments, the bottom of the valve body 1 is provided with a shaft hole, which is located below the ball 4. The one-way ball valve also includes a fixed shaft 6, which passes through the shaft hole and is rotatably connected to the ball 4. Specifically, the ball valve 4 is provided with a groove, in which the fixed shaft 6 is rotatably disposed.

[0031] In some embodiments, the fixed shaft 6 includes a shaft body 61 disposed in a shaft hole and rotatably connected to the ball 4, and an end cap 62 fixed to the end of the shaft body 61, the end cap 62 being detachably connected to the valve body 1.

[0032] In some embodiments, an O-ring 7 is provided between the shaft 61 and the shaft hole, and a sealing gasket 8 is provided between the end cap 62 and the valve body 1 to prevent fluid leakage from between the shaft hole and the fixed shaft 6.

[0033] In some embodiments, the top of the valve body 1 is provided with a rod hole, the valve stem 3 is movably disposed in the rod hole and connected to the ball 4, an O-ring 7 is provided between the valve stem 3 and the rod hole, and a bushing 9 is sleeved on the valve stem 3, the bushing 9 being disposed in the rod hole.

[0034] In some embodiments, the one-way ball valve also includes a valve cover 10 detachably attached to the top of the valve body 1, and the valve stem 3 passes through the valve cover 10 and is connected to the handle.

[0035] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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. A one-way flow ball valve, comprising a valve body (1), a first valve seat (2), a valve stem (3), a ball (4), and a handle, wherein the valve body (1) has an inflow channel (11) and an outflow channel (12), and the valve body (1) has an internal flow channel (40) communicating with the inflow channel (11) and the outflow channel (12), characterized in that, The inner flow channel (40) is provided with a one-way conduction component (5) that controls whether the inner flow channel (40) and the outflow channel (12) are connected. Only when the fluid flows from the inflow channel (11) to the outflow channel (12), the one-way conduction component (5) automatically connects the inner flow channel (40) and the outflow channel (12).

2. The one-way flow ball valve of claim 1, wherein The unidirectional conduction component (5) includes: A second valve seat (51) is disposed in the inner flow channel (40), the second valve seat (51) having a flow port (510), the inner flow channel (40) being connected to the outflow channel (12) through the flow port (510); and, The valve disc (52) is rotatably mounted on the second valve seat (51) and can block the flow port (510). The valve disc (52) is only open when impacted by the fluid flowing from the inflow channel (11) to the outflow channel (12).

3. The one-way flow ball valve of claim 2, wherein, The valve disc (52) is mounted on the end face of the first valve seat (2) facing the outflow channel (12).

4. The one-way flow ball valve of claim 2, wherein, The valve disc (52) has a plug (520) that blocks the flow port (510), the plug (520) being disposed on the end face of the valve disc (52) facing the inflow channel (11).

5. The unidirectional ball valve as described in claim 2, characterized in that, The second valve seat (51) is inclined.

6. A ball valve for one-way flow as claimed in any one of claims 1 to 5, characterised in that The bottom of the valve body (1) is provided with a shaft hole, which is located below the ball (4); The one-way ball valve also includes a fixed shaft (6), which passes through the shaft hole and is rotatably connected to the ball (4).

7. The one-way flow ball valve of claim 6, wherein The fixed shaft (6) includes a shaft body (61) disposed in the shaft hole and rotatably connected to the ball (4) and an end cap (62) fixed to the end of the shaft body (61), the end cap (62) being detachably connected to the valve body (1).

8. The one-way flow ball valve of claim 7, wherein, An O-ring (7) is provided between the shaft (61) and the shaft hole, and a sealing gasket (8) is provided between the end cap (62) and the valve body (1).

9. A ball valve for one-way flow as claimed in any one of claims 1 to 5, wherein The valve body (1) has a rod hole at the top, the valve stem (3) is movably disposed in the rod hole and connected to the ball (4), and an O-ring (7) is provided between the valve stem (3) and the rod hole. A bushing (9) is fitted on the valve stem (3), and the bushing (9) is disposed in the stem hole.

10. A ball valve for one-way flow as claimed in any one of claims 1 to 5, characterised in that The one-way ball valve also includes a valve cover (10) detachably connected to the top of the valve body (1), and the valve stem (3) passes through the valve cover (10) and is connected to the handle.

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